U.S. patent application number 12/491478 was filed with the patent office on 2009-12-31 for hair conditioning composition having higher yield point and higher conversion rate of fatty compound to gel matrix.
Invention is credited to Toshiyuki Okada, Jian-Zhong Yang.
Application Number | 20090324530 12/491478 |
Document ID | / |
Family ID | 41445285 |
Filed Date | 2009-12-31 |
United States Patent
Application |
20090324530 |
Kind Code |
A1 |
Yang; Jian-Zhong ; et
al. |
December 31, 2009 |
HAIR CONDITIONING COMPOSITION HAVING HIGHER YIELD POINT AND HIGHER
CONVERSION RATE OF FATTY COMPOUND TO GEL MATRIX
Abstract
Disclosed is a hair conditioning composition comprising: (a) a
cationic surfactant; (b) a high melting point fatty compound; and
(c) an aqueous carrier; wherein the cationic surfactant, the high
melting point fatty compound, and the aqueous carrier form a gel
matrix; wherein the composition has from about 90% to about 100% of
a conversion rate of the high melting point fatty compound to the
gel matrix; and wherein the composition has a yield point of about
33 Pa or more. Also disclosed is a method of manufacturing of hair
conditioning composition. The compositions of the present
invention, and the compositions made by the method of the present
invention, provide improved conditioning benefits, especially,
improved wet conditioning benefits after rinsing and improved dry
conditioning, while maintaining wet conditioning benefit before
rinsing.
Inventors: |
Yang; Jian-Zhong; (Kobe,
JP) ; Okada; Toshiyuki; (Kobe, JP) |
Correspondence
Address: |
THE PROCTER & GAMBLE COMPANY;Global Legal Department - IP
Sycamore Building - 4th Floor, 299 East Sixth Street
CINCINNATI
OH
45202
US
|
Family ID: |
41445285 |
Appl. No.: |
12/491478 |
Filed: |
June 25, 2009 |
Related U.S. Patent Documents
|
|
|
|
|
|
Application
Number |
Filing Date |
Patent Number |
|
|
61133002 |
Jun 25, 2008 |
|
|
|
Current U.S.
Class: |
424/70.28 ;
424/70.27 |
Current CPC
Class: |
A61K 8/34 20130101; A61K
8/42 20130101; A61K 8/731 20130101; A61K 2800/805 20130101; A61K
8/416 20130101; A61K 2800/48 20130101; A61Q 5/12 20130101; A61K
8/342 20130101; A61K 8/585 20130101 |
Class at
Publication: |
424/70.28 ;
424/70.27 |
International
Class: |
A61K 8/18 20060101
A61K008/18; A61Q 5/12 20060101 A61Q005/12; A61K 8/40 20060101
A61K008/40 |
Claims
1. A hair conditioning composition comprising: (a) a cationic
surfactant; (b) a high melting point fatty compound; and (c) an
aqueous carrier; wherein the cationic surfactant, the high melting
point fatty compound, and the aqueous carrier form a gel matrix;
wherein the composition has from about 90% to about 100% of a
conversion rate of the high melting point fatty compound to the gel
matrix; and wherein the composition has a yield point of about 33
Pa or more.
2. The hair conditioning composition of claim 1 wherein the
composition has from about 95% to about 100% of the conversion
rate.
3. The hair conditioning composition of claim 1 wherein the
composition has a yield point of from about 35 Pa or more.
4. The hair conditioning composition of claim 1 wherein the
cationic surfactant is a salt of a mono-long alkyl quaternized
ammonium and an anion has the formula (I): ##STR00002## wherein one
of R.sup.71, R.sup.72, R.sup.73 and R.sup.74 is selected from an
aliphatic group of from 16 to 30 carbon atoms or an aromatic,
alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl, aryl or
alkylaryl group having up to about 30 carbon atoms; the remainder
of R.sup.71, R.sup.72, R.sup.73 and R.sup.74 are independently
selected from an aliphatic group of from 1 to about 8 carbon atoms
or an aromatic, alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl,
aryl or alkylaryl group having up to about 8 carbon atoms; and
X.sup.- is a salt-forming anion selected from the group consisting
of halides, C1-C4 alkyl sulfates and mixtures thereof.
5. The hair conditioning composition of claim 4 wherein the anion
is selected from halides.
6. The hair conditioning composition of claim 1 wherein the
composition is substantially free of anionic surfactants and
anionic polymers.
7. The hair conditioning composition of claim 1 wherein the weight
ratio of the cationic surfactant and the high melting point fatty
compound is within the range of from about 1:1 to about 1:4.
8. The hair conditioning composition of claim 7 wherein the total
amount of the cationic surfactant and the high melting point fatty
compound is present in the composition at a level of 7.0% or
more.
9. A method of manufacturing a hair conditioning composition,
wherein the composition comprises a cationic surfactant, a high
melting point fatty compound, and an aqueous carrier; wherein a
total amount of the cationic surfactant and the high melting point
fatty compound is from about 7.0% to about 15% by weight of the
composition; wherein the method comprises the steps: (1) preparing
a premix comprising the cationic surfactants and the high melting
point fatty compounds, wherein the temperature of the premix is
higher than a melting point of the high melting point fatty
compounds; and (2) preparing an aqueous carrier, wherein the
temperature of the aqueous carrier is below the melting point of
the high melting point fatty compounds; and (3) mixing the premix
with the aqueous carrier and forming gel matrix.
10. The method of manufacturing of claim 9, wherein the temperature
of the aqueous carrier is from 2.degree. C. to 60.degree. C. lower
than the melting point of the high melting point fatty
compounds.
11. The method of manufacturing of claim 9, wherein the total
amount of the cationic surfactant and the high melting point fatty
compound is from about 7.5% to about 15% by weight of the
composition.
12. The method of manufacturing of claim 9, wherein the premix and
the aqueous carrier is mixed by a high shear homogenizer.
13. A method of conditioning hair, the method comprising following
steps: (i) after shampooing hair, applying to the hair an effective
amount of the conditioning composition of claim 1 for conditioning
the hair; and (ii) then rinsing the hair.
14. The method of conditioning hair of claim 13, wherein the
effective amount is a reduced dosage of from about 0.3 ml to about
0.7 ml per 10 g of hair.
Description
CROSS REFERENCE TO RELATED APPLICATION
[0001] This application claims the benefit of U.S. Provisional
Application No. 61/133,002, filed Jun. 25, 2008.
FIELD OF THE INVENTION
[0002] The present invention relates to a hair conditioning
composition comprising: (a) a cationic surfactant; (b) a high
melting point fatty compound; and (c) an aqueous carrier; wherein
the cationic surfactant, the high melting point fatty compound, and
the aqueous carrier form a gel matrix; wherein the composition has
from about 90% to about 100% of a conversion rate of the high
melting point fatty compound to the gel matrix; and wherein the
composition has a yield point of about 33 Pa or more. The present
invention also relates to a method of manufacturing of hair
conditioning composition. The compositions of the present
invention, and the compositions made by the method of the present
invention, provide improved conditioning benefits, especially,
improved wet conditioning benefits after rinsing and improved dry
conditioning, while maintaining wet conditioning benefit before
rinsing.
BACKGROUND OF THE INVENTION
[0003] A variety of approaches have been developed to condition the
hair. A common method of providing conditioning benefit is through
the use of conditioning agents such as cationic surfactants and
polymers, high melting point fatty compounds, low melting point
oils, silicone compounds, and mixtures thereof. Most of these
conditioning agents are known to provide various conditioning
benefits. For example, some cationic surfactants, when used
together with some high melting point fatty compounds and aqueous
carrier, are believed to provide a gel matrix which is suitable for
providing a variety of conditioning benefits such as slippery feel
during the application to wet hair and softness and moisturized
feel on dry hair.
[0004] For example, WO 2006/044209 discloses a hair conditioning
composition comprising by weight: (a) from about 0.1% to about 10%
of a cationic surfactant; (b) from about 2.5% to about 15% by
weight of the composition of a high melting point fatty compound;
and (c) and an aqueous carrier; wherein the cationic surfactant,
the high melting point fatty compound, and the aqueous carrier form
a lamellar gel matrix; wherein the d-spacing of the lamellar layers
is in the range of 33 nm or less; and wherein the composition has a
yield stress of about 30 Pa or more at 26.7.degree. C. This hair
conditioning compositions are said to provide improved conditioning
benefits, especially improved slippery feel during the application
to wet hair. WO 2006/044209 also describes that; preferably, the
composition of the present invention comprises, by weight of the
hair care composition, from about 60% to about 99% of a gel matrix
including lamellar gel matrix. WO 2006/044209 also describes that;
in highly preferred composition, the DSC profile shows a single
peak having a peak top temperature of about 67.degree. C. to about
73.degree. C., at about 8 mJ/mg, and no peaks larger than 2 mJ/mg
from 40.degree. C. to about 65.degree. C. as the peaks showing at a
temperature of from 40.degree. C. to 55.degree. C. mean the
existence of high melting fatty compounds and/or cationic
surfactants which are not incorporated into the gel matrix.
[0005] However, there remains a need for hair conditioning
compositions which provide improved conditioning benefits,
especially, improved wet conditioning benefits after rinsing and
improved dry conditioning, while maintaining wet conditioning
benefit before rinsing. Such wet conditioning benefits after
rinsing include, for example, reduced friction of wet hair after
rinsing and/or easiness to comb wet hair after rinsing.
[0006] Additionally, there may exist a need for hair conditioning
compositions which provide an improved product appearance, i.e.,
richer, thicker, and/or more concentrated product appearance, and
which consumer may feel higher conditioning benefits from its
appearance.
[0007] Based on the foregoing, there remains a need for
conditioning compositions which provide improved conditioning
benefits, especially, improved wet conditioning benefits after
rinsing and improved dry conditioning, while maintaining wet
conditioning benefit before rinsing. Additionally, there may exist
a need for conditioning compositions which provide an improved
product appearance.
[0008] None of the existing art provides all of the advantages and
benefits of the present invention.
SUMMARY OF THE INVENTION
[0009] The present invention is directed to a hair conditioning
composition comprising: [0010] (a) a cationic surfactant; [0011]
(b) a high melting point fatty compound; and [0012] (c) an aqueous
carrier; [0013] wherein the cationic surfactant, the high melting
point fatty compound, and the aqueous carrier form a gel matrix;
wherein the composition has from about 90% to about 100% of a
conversion rate of the high melting point fatty compound to the gel
matrix; and wherein the composition has a yield point of about 33
Pa or more.
[0014] The present invention is also directed to a method of
manufacturing a hair conditioning composition, [0015] wherein the
composition comprises a cationic surfactant, a high melting point
fatty compound, and an aqueous carrier; [0016] wherein a total
amount of the cationic surfactant and the high melting point fatty
compound is from about 7.0% to about 15% by weight of the
composition; [0017] wherein the method comprises the steps: [0018]
(1) preparing a premix comprising the cationic surfactants and the
high melting point fatty compounds, wherein the temperature of the
premix is higher than a melting point of the high melting point
fatty compounds; and [0019] (2) preparing an aqueous carrier,
wherein the temperature of the aqueous carrier is below the melting
point of the high melting point fatty compounds; and [0020] (3)
mixing the premix with the aqueous carrier and forming gel
matrix.
[0021] The compositions of the present invention, and the
compositions made by the method of the present invention, provide
improved conditioning benefits, especially, improved wet
conditioning benefits after rinsing and improved dry conditioning,
while maintaining wet conditioning benefit before rinsing.
[0022] These and other features, aspects, and advantages of the
present invention will become better understood from a reading of
the following description, and appended claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0023] While the specification concludes with claims particularly
pointing out and distinctly claiming the invention, it is believed
that the invention will be better understood from the following
description of the accompanying figure in which:
[0024] FIG. 1 illustrates an embodiment of d-spacing measurement of
the lamellar gel matrix comprising lamella bilayers 1 and water
2.
DETAILED DESCRIPTION OF THE INVENTION
[0025] While the specification concludes with claims particularly
pointing out and distinctly claiming the invention, it is believed
that the present invention will be better understood from the
following description.
[0026] Herein, "comprising" means that other steps and other
ingredients which do not affect the end result can be added. This
term encompasses the terms "consisting of" and "consisting
essentially of".
[0027] All percentages, parts and ratios are based upon the total
weight of the compositions of the present invention, unless
otherwise specified. All such weights as they pertain to listed
ingredients are based on the active level and, therefore, do not
include carriers or by-products that may be included in
commercially available materials.
[0028] Herein, "mixtures" is meant to include a simple combination
of materials and any compounds that may result from their
combination.
Composition
[0029] The hair conditioning composition of the present invention
comprising: [0030] (a) a cationic surfactant; [0031] (b) a high
melting point fatty compound; and [0032] (c) an aqueous carrier;
[0033] wherein the cationic surfactant, the high melting point
fatty compound, and the aqueous carrier form a gel matrix; wherein
the composition has from about 90% to about 100% of a conversion
rate of the high melting point fatty compound to the gel matrix;
and wherein the composition has a yield point of about 33 Pa or
more.
[0034] It has been found that by the inventors of the present
invention that; by having the above specific conversion rate and
the above specific yield point, the hair conditioning compositions
deliver improved conditioning benefits, especially improved wet
conditioning benefits after rinsing and improved dry conditioning,
while maintaining wet conditioning benefit before rinsing, compared
to compositions having a smaller conversion rate and/or smaller
yield point.
[0035] Additionally, it has been also found that by the inventors
of the present invention that; by having the above specific
conversion rate and the specific yield point, the conditioning
composition of the present invention may provide an improved
product appearance, i.e., richer, thicker, and or more concentrated
product appearance.
[0036] For forming the composition of the present invention, it is
preferred to prepare the composition by the method described below
under the title "METHOD OF MANUFACTURING". For forming the
composition of the present invention, it is also preferred that the
total amount of the cationic surfactant and the high melting point
fatty compound is from about 7.0%, as described below under the
title "METHOD OF MANUFACTURING".
Gel Matrix
[0037] The composition of the present invention comprises a gel
matrix including lamella gel matrix. The gel matrix comprises the
cationic surfactant, the high melting point fatty compound, and an
aqueous carrier. The gel matrix is suitable for providing various
conditioning benefits, such as slippery feel during the application
to wet hair and softness and moisturized feel on dry hair.
[0038] In view of providing improved wet conditioning benefits, the
cationic surfactant and the high melting point fatty compound are
contained at a level such that the weight ratio of the cationic
surfactant to the high melting point fatty compound is in the range
of, preferably from about 1:1 to about 1:10, more preferably from
about 1:1 to about 1:4, still more preferably from about 1:2 to
about 1:4.
[0039] Preferably, in view of stability of the gel matrix, the
composition of the present invention is substantially free of
anionic surfactants and anionic polymers. In the present invention,
"the composition being substantially free of anionic surfactants
and anionic polymers" means that: the composition is free of
anionic surfactants and anionic polymers; or, if the composition
contains anionic surfactants and anionic polymers, the level of
such anionic surfactants and anionic polymers is very low. In the
present invention, the total level of such anionic surfactants and
anionic polymers, if included, 1% or less, preferably 0.5% or less,
more preferably 0.1% or less by weight of the composition. Most
preferably, the total level of such anionic surfactants and anionic
polymers is 0% by weight of the composition.
Conversion Rate of High Melting Point Fatty Compound to Gel
Matrix
[0040] The composition of the present invention has a conversion
rate of the high melting point fatty compound to gel matrix, such
rate being in the range of from about 90% to about 100%, preferably
from about 95% to about 100%, more preferably above 99% (excluding
99%) to about 100%, in view of providing wet conditioning benefits
before rinsing such as spreadability, and also providing wet
conditioning benefits after rinsing_and improved dry conditioning
benefits.
[0041] Such conversion rate is measured by the following
equation:
Conversion rate (%)=[Delta H (J/g) of an endothermic peak having a
peak top temperature of from about 67.degree. C. to about
75.degree. C./A total delta H (J/g) of all endothermic
peaks].times.100
[0042] Such delta H is detected by differential scanning
calorimetry (hereinafter referred to as "DSC") measurement of the
composition. Thermal events obtained by DSC measurement describe
chemical and physical changes of the scanned sample that involve an
enthalpy change or energy gradient when the temperature of the
sample is fluctuated. As such, the phase behavior and interaction
among components of hair conditioning compositions of the present
invention may be understood by their DSC curves. DSC measurement of
compositions of the present invention is conducted by Seiko DSC
6000 instrument available from Seiko Instruments Inc. In a typical
measurement procedure, a sample is prepared by sealing an
appropriate amount of the composition into a container made for DSC
measurement and sealed. The weight of the sample is recorded. A
blank sample i.e.; an unsealed sample of the same container is also
prepared. The sample and blank sample are placed inside the
instrument, and run under a measurement condition of from about
-50.degree. C. to about 130.degree. C. at a heating rate of from
about 1.degree. C./minute to about 10.degree. C./minute. The area
of the peaks as identified are calculated and divided by the weight
of the sample to obtain the enthalpy change in mJ/mg. The position
of the peaks is identified by the peak top position.
[0043] In the compositions of the present invention, the DSC curve
shows a endothermic peak of, preferably larger than about 3 mJ/mg,
more preferably from about 4 mJ/mg, still more preferably from
about 5 mJ, and preferably to about 10 mJ/mg, and such peak having
a peak top temperature of from about 67.degree. C. to about
75.degree. C. which indicates the existence of a gel matrix.
[0044] The DSC curve of the compositions of the present invention
shows, preferably no peaks larger than 2.5 mJ/mg, more preferably
no peaks larger than 2 mJ/mg, still more preferably no peaks larger
than 1 mJ/mg, at a temperature of from 40.degree. C. to 55.degree.
C., preferably from 40.degree. C. to about 65.degree. C., as the
peaks having peak top temperatures at such temperature range mean
the existence of high melting fatty compounds and/or cationic
surfactants which are not incorporated into the gel matrix. It is
believed that a composition formed predominantly with such a gel
matrix shows a relatively stable phase behavior during the
temperature range of from about 40.degree. C. to about 55.degree.
C., preferably from 40.degree. C. to about 65.degree. C.
Yield Point
[0045] The composition of the present invention has a yield point
of about 33 Pa or more preferably about 35 Pa or more, more
preferably 40 Pa or more, in view of providing improved wet
conditioning benefits after rinsing, and improved dry conditioning.
The above yield point may be also preferred in view of providing
richer, thicker, and/or more concentrated product appearance.
Preferably, the yield point is up to about 80 Pa, more preferably
up to about 75 Pa, still more preferably up to about 70 Pa, in view
of spreadability and product appearance.
[0046] The yield point of the present invention is measured by
dynamic oscillation stress sweep at 1 Hz frequency and 25.degree.
C., by means of a rheometer available from TA Instruments with a
mode name of AR2000 using 40 mm diameter parallel type geometry
having gap of 1000 .mu.m.
[0047] Preferably, in view of spreadability, the composition of the
present invention is substantially free of thickening polymers. In
the present invention, "the composition being substantially free of
thickening polymers" means that: the composition is free of
thickening polymers; or, if the composition contains a thickening
polymer, the level of such thickening polymer is very low. In the
present invention, the level of such thickening polymers, if
included, 1% or less, preferably 0.5% or less, more preferably 0.1%
or less, still more preferably 0.06% by weight of the composition.
Such thickening polymers include, for example, guar polymers
including nonionic and cationic guar polymers, cellulose polymers
including nonionic, cationic, and/or hydrophobically modified
cellulose polymers such as cetyl hydroxyethylcellulose, other
synthetic polymers including nonionic and cationic synthetic
polymers such as polyquaternium-37.
D-Spacing
[0048] It has been surprisingly found by the inventors of the
present invention that; compositions characterized by the
combination of the above specific conversion rate and specific
yield point provide improved wet performance, especially wet
conditioning after rinsing, even if such compositions having a
larger d-spacing than those of the compositions of WO 2006/044209.
Such larger d-spacing herein means a d-spacing of above 33 nm
(excluding 33 nm). D-spacing in the present invention means a
distance between two lamellar bilayers plus the width of one
lamellar bilayer, in lamellar gel matrix, as shown in FIG. 1. Thus,
d-spacing is defined according to the following equation:
D-spacing=d.sub.water+d.sub.bilayer
[0049] D-spacing can be measured by using a High Flux Small Angle
X-ray Scattering Instrument available from PANalytical with a
tradename SAXSess, under the typical conditions of Small Angle
X-Ray Scattering (SAXS) measurements in a q-range (q=4.pi./.lamda.
sin(.theta.) wherein .lamda. is the wavelength and .theta. is half
the scattering angel) of 0.06<q/nm.sup.-1<27 which
corresponds to 0.085<2.theta./degree<40. All data are
transmission-calibrated by monitoring the attenuated primary beam
intensity and normalizing it into unity, so that relative intensity
for different samples can be obtained. The transmission-calibration
allows us to make an accurate subtraction of water contribution
from the net sample scattering. D-spacing is calculated according
to the following equation (which is known as Bragg's equation):
n.lamda.=2d sin(.theta.), wherein n is the number of lamellar
bi-layers
Cationic Surfactant
[0050] The compositions of the present invention comprise a
cationic surfactant. The cationic surfactant can be included in the
composition at a level from about 1%, preferably from about 1.5%,
more preferably from about 1.8%, still more preferably from about
2.0%, and to about 8%, preferably to about 5%, more preferably to
about 4% by weight of the composition, in view of providing the
benefits of the present invention.
[0051] It is preferred in the present invention that, in view of
improved wet conditioning benefits, the composition is
substantially free of other cationic surfactants than those
preferred in the present invention. Such "other cationic
surfactant" includes, for example, tertiary amines, tertiary amine
salts, and di-long alkyl cationic surfactants having two long alkyl
chains, for example those having from about 12 to about 40 carbon
atoms, such as dicetyl dimethyl ammonium chloride and distearyl
dimethyl ammonium chloride. In the present invention, "the
composition being substantially free of other cationic surfactants"
means that: the composition is free of other cationic surfactants;
or, if the composition contains other cationic surfactants, the
level of such other cationic surfactants is very low. In the
present invention, the level of such other cationic surfactants, if
included, 1% or less, preferably 0.5% or less, more preferably 0.1%
or less by weight of the composition. Most preferably, the level of
such other cationic surfactants is 0% by weight of the
composition.
Mono-Long Alkyl Quaternized Ammonium Salt Cationic Surfactant
[0052] One of the preferred cationic surfactants of the present
invention is a salt of a mono-long alkyl quaternized ammonium and
an anion, wherein the anion is selected from the group consisting
of halides such as chloride and bromide, C1-C4 alkyl sulfate such
as methosulfate and ethosulfate, and mixtures thereof. More
preferably, the anion is selected from the group consisting of
halides such as chloride and mixtures thereof.
[0053] The mono-long alkyl quaternized ammonium salts useful herein
are those having the formula (I):
##STR00001##
wherein one of R.sup.71, R.sup.72, R.sup.73 and R.sup.74 is
selected from an aliphatic group of from 12 to 40 carbon atoms or
an aromatic, alkoxy, polyoxyalkylene, alkylamido, hydroxyalkyl,
aryl or alkylaryl group having up to about 40 carbon atoms; the
remainder of R.sup.71, R.sup.72, R.sup.73 and R.sup.74 are
independently selected from an aliphatic group of from 1 to about 8
carbon atoms or an aromatic, alkoxy, polyoxyalkylene, alkylamido,
hydroxyalkyl, aryl or alkylaryl group having up to about 8 carbon
atoms; and X.sup.- is a salt-forming anion selected from the group
consisting of halides such as chloride and bromide, C1-C4 alkyl
sulfate such as methosulfate and ethosulfate, and mixtures thereof.
The aliphatic groups can contain, in addition to carbon and
hydrogen atoms, ether linkages, and other groups such as amino
groups. The longer chain aliphatic groups, e.g., those of about 16
carbons, or higher, can be saturated or unsaturated. Preferably,
one of R.sup.71, R.sup.72, R.sup.73 and R.sup.74 is selected from
an alkyl group of from 16 to 40 carbon atoms, more preferably from
18 to 26 carbon atoms, still more preferably from 22 carbon atoms;
and the remainder of R.sup.71, R.sup.72, R.sup.73 and R.sup.74 are
independently selected from CH.sub.3, C.sub.2H.sub.5,
C.sub.2H.sub.4OH, CH.sub.2C.sub.6H.sub.5, and mixtures thereof. It
is believed that such mono-long alkyl quaternized ammonium salts
can provide improved slippery and slick feel on wet hair, compared
to multi-long alkyl quaternized ammonium salts. It is also believed
that mono-long alkyl quaternized ammonium salts can provide
improved hydrophobicity and smooth feel on dry hair, compared to
amine or amine salt cationic surfactants.
[0054] Among them, more preferred cationic surfactants are those
having a longer alkyl group, i.e., C18-22 alkyl group. Such
cationic surfactants include, for example, behenyl trimethyl
ammonium chloride, methyl sulfate or ethyl sulfate, and stearyl
trimethyl ammonium chloride, methyl sulfate or ethyl sulfate.
Further preferred are behenyl trimethyl ammonium chloride, methyl
sulfate or ethyl sulfate, and still further preferred is behenyl
trimethyl ammonium chloride. It is believed that; cationic
surfactants having a longer alkyl group provide improved deposition
on the hair, thus can provide improved conditioning benefits such
as improved softness on dry hair, compared to cationic surfactant
having a shorter alkyl group. It is also believed that such
cationic surfactants can provide reduced irritation, compared to
cationic surfactants having a shorter alkyl group.
High Melting Point Fatty Compound
[0055] The high melting point fatty compound can be included in the
composition at a level of from about 2%, preferably from about 4%,
more preferably from about 5%, still more preferably from about
5.5%, and to about 15%, preferably to about 10% by weight of the
composition, in view of providing the benefits of the present
invention.
[0056] The high melting point fatty compound useful herein have a
melting point of 25.degree. C. or higher, preferably 40.degree. C.
or higher, more preferably 45.degree. C. or higher, still more
preferably 50.degree. C. or higher, in view of stability of the gel
matrix. Preferably, such melting point is up to about 90.degree.
C., more preferably up to about 80.degree. C., still more
preferably up to about 70.degree. C., even more preferably up to
about 65.degree. C., in view of easier manufacturing and easier
emulsification. In the present invention, the high melting point
fatty compound can be used as a single compound or as a blend or
mixture of at least two high melting point fatty compounds. When
used as such blend or mixture, the above melting point means the
melting point of the blend or mixture.
[0057] The high melting point fatty compound useful herein is
selected from the group consisting of fatty alcohols, fatty acids,
fatty alcohol derivatives, fatty acid derivatives, and mixtures
thereof. It is understood by the artisan that the compounds
disclosed in this section of the specification can in some
instances fall into more than one classification, e.g., some fatty
alcohol derivatives can also be classified as fatty acid
derivatives. However, a given classification is not intended to be
a limitation on that particular compound, but is done so for
convenience of classification and nomenclature. Further, it is
understood by the artisan that, depending on the number and
position of double bonds, and length and position of the branches,
certain compounds having certain required carbon atoms may have a
melting point of less than the above preferred in the present
invention. Such compounds of low melting point are not intended to
be included in this section. Nonlimiting examples of the high
melting point compounds are found in International Cosmetic
Ingredient Dictionary, Fifth Edition, 1993, and CTFA Cosmetic
Ingredient Handbook, Second Edition, 1992.
[0058] Among a variety of high melting point fatty compounds, fatty
alcohols are preferably used in the composition of the present
invention. The fatty alcohols useful herein are those having from
about 14 to about 30 carbon atoms, preferably from about 16 to
about 22 carbon atoms. These fatty alcohols are saturated and can
be straight or branched chain alcohols.
[0059] Preferred fatty alcohols include, for example, cetyl alcohol
(having a melting point of about 56.degree. C.), stearyl alcohol
(having a melting point of about 58-59.degree. C.), behenyl alcohol
(having a melting point of about 71.degree. C.), and mixtures
thereof. These compounds are known to have the above melting point.
However, they often have lower melting points when supplied, since
such supplied products are often mixtures of fatty alcohols having
alkyl chain length distribution in which the main alkyl chain is
cetyl, stearyl or behenyl group. In the present invention, more
preferred fatty alcohols are cetyl alcohol, stearyl alcohol and
mixtures thereof.
[0060] Commercially available high melting point fatty compounds
useful herein include: cetyl alcohol, stearyl alcohol, and behenyl
alcohol having tradenames KONOL series available from Shin Nihon
Rika (Osaka, Japan), and NAA series available from NOF (Tokyo,
Japan); pure behenyl alcohol having tradename 1-DOCOSANOL available
from WAKO (Osaka, Japan).
Aqueous Carrier
[0061] The conditioning composition of the present invention
comprises an aqueous carrier. The level and species of the carrier
are selected according to the compatibility with other components,
and other desired characteristic of the product.
[0062] The carrier useful in the present invention includes water
and water solutions of lower alkyl alcohols and polyhydric
alcohols. The lower alkyl alcohols useful herein are monohydric
alcohols having 1 to 6 carbons, more preferably ethanol and
isopropanol. The polyhydric alcohols useful herein include
propylene glycol, hexylene glycol, glycerin, and propane diol.
[0063] Preferably, the aqueous carrier is substantially water.
Deionized water is preferably used. Water from natural sources
including mineral cations can also be used, depending on the
desired characteristic of the product. Generally, the compositions
of the present invention comprise from about 20% to about 99%,
preferably from about 30% to about 95%, and more preferably from
about 80% to about 90% water.
Silicone Compound
[0064] Preferably, the compositions of the present invention
preferably contain a silicone compound. It is believed that the
silicone compound can provide smoothness and softness on dry hair.
The silicone compounds herein can be used at levels by weight of
the composition of preferably from about 0.1% to about 20%, more
preferably from about 0.5% to about 10%, still more preferably from
about 1% to about 8%.
[0065] Preferably, the silicone compounds have an average particle
size of from about Imicrons to about 50 microns, in the
composition.
[0066] The silicone compounds useful herein, as a single compound,
as a blend or mixture of at least two silicone compounds, or as a
blend or mixture of at least one silicone compound and at least one
solvent, have a viscosity of preferably from about 1,000 to about
2,000,000 mPas at 25.degree. C.
[0067] The viscosity can be measured by means of a glass capillary
viscometer as set forth in Dow Corning Corporate Test Method
CTM0004, Jul. 20, 1970. Suitable silicone fluids include polyalkyl
siloxanes, polyaryl siloxanes, polyalkylaryl siloxanes, polyether
siloxane copolymers, amino substituted silicones, quaternized
silicones, and mixtures thereof. Other nonvolatile silicone
compounds having conditioning properties can also be used.
[0068] Preferred polyalkyl siloxanes include, for example,
polydimethylsiloxane, polydiethylsiloxane, and
polymethylphenylsiloxane. Polydimethylsiloxane, which is also known
as dimethicone, is especially preferred. These silicone compounds
are available, for example, from the General Electric Company in
their Viscasil.RTM. and TSF 451 series, and from Dow Corning in
their Dow Corning SH200 series.
[0069] The above polyalkylsiloxanes are available, for example, as
a mixture with silicone compounds having a lower viscosity. Such
mixtures have a viscosity of preferably from about 1,000 mPas to
about 100,000 mPas, more preferably from about 5,000 mPas to about
50,000 mPas. Such mixtures preferably comprise: (i) a first
silicone having a viscosity of from about 100,000 mPas to about
30,000,000 mPas at 25.degree. C., preferably from about 100,000
mPas to about 20,000,000 mPas; and (ii) a second silicone having a
viscosity of from about 5 mPas to about 20,000 mPas at 25.degree.
C., preferably from about 5 mPas to about 5,000 mPas. Such mixtures
useful herein include, for example, a blend of dimethicone having a
viscosity of 18,000,000 mPas and dimethicone having a viscosity of
200 mPas available from GE Toshiba, and a blend of dimethicone
having a viscosity of 18,000,000 mPas and cyclopentasiloxane
available from GE Toshiba.
[0070] The silicone compounds useful herein also include a silicone
gum. The term "silicone gum", as used herein, means a
polyorganosiloxane material having a viscosity at 25.degree. C. of
greater than or equal to 1,000,000 centistokes. It is recognized
that the silicone gums described herein can also have some overlap
with the above-disclosed silicone compounds. This overlap is not
intended as a limitation on any of these materials. The "silicone
gums" will typically have a mass molecular weight in excess of
about 200,000, generally between about 200,000 and about 1,000,000.
Specific examples include polydimethylsiloxane,
poly(dimethylsiloxane methylvinylsiloxane) copolymer,
poly(dimethylsiloxane diphenylsiloxane methylvinylsiloxane)
copolymer and mixtures thereof. The silicone gums are available,
for example, as a mixture with silicone compounds having a lower
viscosity. Such mixtures useful herein include, for example,
Gum/Cyclomethicone blend available from Shin-Etsu.
[0071] Silicone compounds useful herein also include amino
substituted materials. Preferred aminosilicones include, for
example, those which conform to the general formula (1):
(R.sub.1).sub.aG.sub.3-a-Si--(--OSiG.sub.2).sub.n--(--OSiG.sub.b(R.sub.1-
).sub.2-b).sub.m--O--SiG.sub.3-a(R.sub.1).sub.a
wherein G is hydrogen, phenyl, hydroxy, or C.sub.1-C.sub.8 alkyl,
preferably methyl; a is 0 or an integer having a value from 1 to 3,
preferably 1; b is 0, 1 or 2, preferably 1; n is a number from 0 to
1,999; m is an integer from 0 to 1,999; the sum of n and m is a
number from 1 to 2,000; a and m are not both 0; R.sub.1 is a
monovalent radical conforming to the general formula CqH.sub.2qL,
wherein q is an integer having a value from 2 to 8 and L is
selected from the following groups:
--N(R.sub.2)CH.sub.2--CH.sub.2--N(R.sub.2).sub.2;
--N(R.sub.2).sub.2; --N(R.sub.2).sub.3A.sup.-;
--N(R.sub.2)CH.sub.2--CH.sub.2--NR.sub.2H.sub.2A.sup.-; wherein
R.sub.2 is hydrogen, phenyl, benzyl, or a saturated hydrocarbon
radical, preferably an alkyl radical from about C.sub.1 to about
C.sub.20; A is a halide ion.
[0072] Highly preferred amino silicones are those corresponding to
formula (I) wherein m=0, a=1, q=3, G=methyl, n is preferably from
about 1500 to about 1700, more preferably about 1600; and L is
--N(CH3)2 or --NH2, more preferably --NH2. Another highly preferred
amino silicones are those corresponding to formula (I) wherein m=0,
a=1, q=3, G=methyl, n is preferably from about 400 to about 600,
more preferably about 500; and L is --N(CH3)2 or --NH.sub.2, more
preferably --NH.sub.2. Such highly preferred amino silicones can be
called as terminal aminosilicones, as one or both ends of the
silicone chain are terminated by nitrogen containing group.
[0073] The above aminosilicones, when incorporated into the
composition, can be mixed with solvent having a lower viscosity.
Such solvents include, for example, polar or non-polar, volatile or
non-volatile oils. Such oils include, for example, silicone oils,
hydrocarbons, and esters. Among such a variety of solvents,
preferred are those selected from the group consisting of
non-polar, volatile hydrocarbons, volatile cyclic silicones,
non-volatile linear silicones, and mixtures thereof. The
non-volatile linear silicones useful herein are those having a
viscosity of from about 1 to about 20,000 centistokes, preferably
from about 20 to about 10,000 centistokes at 25.degree. C. Among
the preferred solvents, highly preferred are non-polar, volatile
hydrocarbons, especially non-polar, volatile isoparaffins, in view
of reducing the viscosity of the aminosilicones and providing
improved hair conditioning benefits such as reduced friction on dry
hair. Such mixtures have a viscosity of preferably from about 1,000
mPas to about 100,000 mPas, more preferably from about 5,000 mPas
to about 50,000 mPas.
[0074] Other suitable alkylamino substituted silicone compounds
include those having alkylamino substitutions as pendant groups of
a silicone backbone. Highly preferred are those known as
"amodimethicone". Commercially available amodimethicones useful
herein include, for example, BY 16-872 available from Dow
Corning.
[0075] The silicone compounds may further be incorporated in the
present composition in the form of an emulsion, wherein the
emulsion is made my mechanical mixing, or in the stage of synthesis
through emulsion polymerization, with or without the aid of a
surfactant selected from anionic surfactants, nonionic surfactants,
cationic surfactants, and mixtures thereof.
Additional Components
[0076] The composition of the present invention may include other
additional components, which may be selected by the artisan
according to the desired characteristics of the final product and
which are suitable for rendering the composition more cosmetically
or aesthetically acceptable or to provide them with additional
usage benefits. Such other additional components generally are used
individually at levels of from about 0.001% to about 10%,
preferably up to about 5% by weight of the composition.
[0077] A wide variety of other additional components can be
formulated into the present compositions. These include: other
conditioning agents such as hydrolyzed collagen with tradename
Peptein 2000 available from Hormel, vitamin E with tradename Emix-d
available from Eisai, panthenol available from Roche, panthenyl
ethyl ether available from Roche, hydrolyzed keratin, proteins,
plant extracts, and nutrients; preservatives such as benzyl
alcohol, methyl paraben, propyl paraben and imidazolidinyl urea; pH
adjusting agents, such as citric acid, sodium citrate, succinic
acid, phosphoric acid, sodium hydroxide, sodium carbonate; coloring
agents, such as any of the FD&C or D&C dyes; perfumes; and
sequestering agents, such as disodium ethylenediamine
tetra-acetate; ultraviolet and infrared screening and absorbing
agents such as benzophenones; and antidandruff agents such as zinc
pyrithione.
Low Melting Point Oil
[0078] Low melting point oils useful herein are those having a
melting point of less than 25.degree. C. The low melting point oil
useful herein is selected from the group consisting of: hydrocarbon
having from 10 to about 40 carbon atoms; unsaturated fatty alcohols
having from about 10 to about 30 carbon atoms such as oleyl
alcohol; unsaturated fatty acids having from about 10 to about 30
carbon atoms; fatty acid derivatives; fatty alcohol derivatives;
ester oils such as pentaerythritol ester oils including
pentaerythritol tetraisostearate, trimethylol ester oils, citrate
ester oils, and glyceryl ester oils; poly .alpha.-olefin oils such
as polydecenes; and mixtures thereof.
Product Forms
[0079] The conditioning compositions of the present invention can
be in the form of rinse-off products or leave-on products, and can
be formulated in a wide variety of product forms, including but not
limited to creams, gels, emulsions, mousses and sprays. The
conditioning composition of the present invention is especially
suitable for rinse-off hair conditioner.
Method of Use
[0080] The conditioning composition of the present invention is
preferably used for a method of conditioning hair, the method
comprising following steps: [0081] (i) after shampooing hair,
applying to the hair an effective amount of the conditioning
composition for conditioning the hair; and [0082] (ii) then rinsing
the hair.
[0083] Effective amount herein is, for example, from about 0.1 ml
to about 2 ml per 10 g of hair, preferably from about 0.2 ml to
about 1.5 ml per 10 g of hair.
[0084] The conditioning composition of the present invention
provides improved conditioning benefits, especially improved wet
conditioning benefits after rinsing and improved dry conditioning,
while maintaining wet conditioning benefit before rinsing. The
conditioning composition of the present invention may also provide
improved product appearance to consumer. Thus, a reduced dosage of
the conditioning composition of the present invention may provide
the same level of conditioning benefits as those of a full dosage
of conventional conditioner compositions. Such reduced dosage
herein is, for example, from about 0.3 ml to about 0.7 ml per 10 g
of hair.
Method of Manufacturing
[0085] The present invention is also directed to a method of
manufacturing a hair conditioning composition, [0086] wherein the
composition comprises a cationic surfactant, a high melting point
fatty compound, and an aqueous carrier; [0087] wherein a total
amount of the cationic surfactant and the high melting point fatty
compound is from about 7.0% to about 15% by weight of the
composition; [0088] wherein the method comprises the steps: [0089]
(1) preparing a premix (hereinafter, can be referred to as oil
phase) comprising the cationic surfactants and the high melting
point fatty compounds, wherein the temperature of the premix is
higher than a melting point of the high melting point fatty
compounds; and [0090] (2) preparing an aqueous carrier
(hereinafter, can be referred to as aqueous phase), wherein the
temperature of the aqueous carrier is below the melting point of
the high melting point fatty compounds; and [0091] (3) mixing the
premix with the aqueous carrier and forming gel matrix.
[0092] Preferably, the method further comprises the step of adding
additional ingredients such as silicone compounds, perfumes,
preservatives, if included, to the gel matrix.
[0093] Preferably, the premix has a temperature of from about
25.degree. C., more preferably from about 40.degree. C., still more
preferably from about 50.degree. C., even more preferably from
about 55.degree. C., further preferably from about 65.degree. C.,
and to about 150.degree. C., more preferably to about 95.degree.
C., still more preferably to about 90.degree. C., even more
preferably to about 85.degree. C., when mixing it with the aqueous
carrier.
[0094] Preferably, the aqueous carrier has a temperature of from
about 10.degree. C., more preferably from about 15.degree. C.,
still more preferably from about 20.degree. C., and to about
65.degree. C., more preferably to about 55.degree. C., still more
preferably to about 52.degree. C., when mixing it with the premix.
Preferably, the temperature of the aqueous carrier, when mixing it
with the premix, is at least about 5.degree. C. lower than, more
preferably at least about 10.degree. C. lower than the temperature
of the premix. Preferably, the temperature of the aqueous carrier,
when mixing it with the premix, is from about 2.degree. C. to about
60.degree. C. lower than, more preferably from about 2.degree. C.
to about 40.degree. C. lower than, still more preferably from about
2.degree. C. to about 30.degree. C. lower than the melting point of
the high melting point fatty compounds.
[0095] Preferably, the premix and the aqueous carrier are mixed by
using a high shear homogenizer. Such high shear homogenizers useful
herein include, for example: Sonolator.RTM. available from Sonic
Corporation, Manton Gaulin type homogenizer available from the APV
Manton Corporation, the Microfluidizer available from Microfluidics
Corporation, Becomix.RTM. available from A. Berents
Gmbh&Co.
[0096] Preferably, the total amount of the cationic surfactant and
the high melting point fatty compound is from about 7.0%,
preferably from about 7.5%, more preferably from about 8.0% by
weight of the composition, in view of providing the benefits of the
present invention, and to about 15%, preferably to about 14%, more
preferably to about 13%, still more preferably to about 10% by
weight of the composition, in view of spreadability and product
appearance.
[0097] Preferably, the mixing step (3) comprises the following
detailed steps: (3-1) feeding either of the oil phase or the
aqueous phase into a high shear field having an energy density of
about 1.0.times.10.sup.2 J/m.sup.3 or more; (3-2) feeding the other
phase directly to the field; and (3-3) for an emulsion. Preferably,
the method further requires at least one of the following: the
mixing step (3) is conducted by using a homogenizer having a
rotating member; the surfactant is a mono-alkyl cationic surfactant
and the composition is substantially free of di-alkyl cationic
surfactants; and the surfactant is a cationic surfactant and the
oil phase contains from 0 to about 50% of the aqueous carrier by
weight of the oil phase, preferably the oil phase is substantially
free of water.
EXAMPLES
[0098] The following examples further describe and demonstrate
embodiments within the scope of the present invention. The examples
are given solely for the purpose of illustration and are not to be
construed as limitations of the present invention, as many
variations thereof are possible without departing from the spirit
and scope of the invention. Where applicable, ingredients are
identified by chemical or CTFA name, or otherwise defined
below.
TABLE-US-00001 Compositions (wt %) Components Ex. 1 Ex. 2 Ex. 3 Ex.
4 Ex. i Ex. ii Ex. iii Behenyl trimethyl ammonium chloride 2.3 2.8
3.4 -- 2.8 2.8 1.8 Behenyl trimethyl ammonium methyl -- -- -- 2.8
-- -- -- sulfate Cetyl alcohol 1.5 1.9 2.2 1.9 1.9 1.9 1.2 Stearyl
alcohol 3.7 4.7 5.5 4.6 4.7 4.7 2.9 Aminosilicone *1 1.5 1.5 1.5
1.5 1.5 1.5 1.5 Isopropanol -- 0.6 -- 0.6 -- -- -- Dipropylene
glycol -- -- 0.7 -- -- -- -- Cetyl hydroxyethyl cellulose *2 -- --
-- -- 0.5 -- -- Disodium EDTA 0.13 0.13 0.13 0.13 0.13 0.13 0.13
Preservatives 0.4 0.4 0.4 0.4 0.4 0.4 0.4 Perfume 0.35 0.35 0.35
0.35 0.35 0.35 0.35 Panthenol 0.05 0.05 0.05 0.05 0.05 0.05 0.05
Panthenyl ethyl ether 0.03 0.03 0.03 0.03 0.03 0.03 0.03 Deionized
Water q.s. to 100% Definitions of Components *1 Aminosilicone:
Available from GE having a viscosity 10,000 mPa s, and having
following formula (I):
(R.sub.1).sub.aG.sub.3-a--Si--(--OSiG.sub.2).sub.n--(--OSiG.sub.b(R.sub.1-
).sub.2-b).sub.m--O--SiG.sub.3-a(R.sub.1).sub.a (I) wherein G is
methyl; a is an integer of 1; b is 0, 1 or 2, preferably 1; n is a
number from 400 to about 600; m is an integer of 0; R.sub.1 is a
monovalent radical conforming to the general formula CqH.sub.2qL,
wherein q is an integer of 3 and L is --NH.sub.2 *2 Cetyl
hydroxyethyl cellulose: Polysurf available from Hurcules Inc.
Method of Preparation
[0099] The conditioning compositions of "Ex. 1" through "Ex. 4" and
the composition of "Ex. iii" are suitably made as follows: [0100]
Cationic surfactants and high melting point fatty compounds are
mixed and heated to from about 65.degree. C. to about 90.degree. C.
to form a premix. Separately, water is prepared at from about
25.degree. C. to about 52.degree. C. In Becomix.RTM. direct
injection rotor-stator homogenizer, the premix is injected to a
high shear field having an energy density of from
1.0.times.10.sup.4 J/m.sup.3 to 1.0.times.10.sup.7 J/m.sup.3 where
the water is already present. A gel matrix is formed. If included,
silicone compounds, perfumes, preservatives are added to the gel
matrix with agitation. Then the composition is cooled down to room
temperature.
[0101] The conditioning compositions of "Ex. i" and "Ex. ii" as
shown above can be prepared by any conventional method well known
in the art. They are suitably made as follows: [0102] If included,
polymers are added to water with agitation. Cationic surfactants
and high melting point fatty compounds are added to water with
agitation, and heated to about 80.degree. C. The mixture is cooled
down to about 55.degree. C. and gel matrix is formed. If included,
silicone compounds, perfumes, preservatives are added to the gel
matrix with agitation. Then the mixture is cooled down to room
temperature.
Properties and Conditioning Benefits
[0103] With respect to the above compositions of Ex. 1-4 and Ex.
i-iii, the yield stress and the conversion rate are measured by the
methods described above. For some of the compositions, d-spacing is
also measured by the method described above. Such properties of the
compositions are shown in below Table 1.
[0104] With respect to the above compositions of Ex. 1-4 and Ex.
i-iii, conditioning benefits are evaluated by the following
methods. Results of the evaluation are also shown in below Table
1.
Wet Conditioning Before Rinsing
[0105] Wet conditioning before rinsing is evaluated by hair
friction force measured by an instrument named Texture Analyzer (TA
XT Plus, Texture Technologies, Scarsdale, N.Y., USA). 1 g of the
composition is applied to 10 g of hair sample. After spreading the
composition on the hair sample and before rinsing it, friction
force (g) between the hair sample and a polyurethane pad is
measured by the above instrument.
[0106] A: Above 5% (excluding 5%) to 10% reduction of Friction
force, compared to Control
[0107] B: Up to 5% (including 5%) reduction of Friction force,
compared to Control
[0108] C: Control or Equal to Control
[0109] D: Increased Friction force, compared to Control
Wet Conditioning After Rinsing
[0110] Wet conditioning after rinsing is evaluated by hair friction
force measured by an instrument named Texture Analyzer (TA XT Plus,
Texture Technologies, Scarsdale, N.Y., USA). 1 g of the composition
is applied to 10 g of hair sample. After spreading the composition
on the hair sample, rinsing it with warm water for 30 seconds.
Then, friction force (g) between the hair sample and a polyurethane
pad is measured by the above instrument.
[0111] A: Above 5% (excluding 5%) to 10% reduction of Friction
force, compared to Control
[0112] B: Up to 5% (including 5%) reduction of Friction force,
compared to Control
[0113] C: Control or Equal to Control
[0114] D: Increased Friction force, compared to Control
Dry Conditioning
[0115] Dry conditioning performance is evaluated by hair friction
force measured by an instrument named Instron Tester (Instron 5542,
Instron, Inc,; Canton, Mass., USA). 2 g of the composition is
applied to 20 g of hair sample. After spreading the composition on
the hair sample, rinsing it with warm water for 30 seconds, and the
hair sample is left to dry over night. The friction force (g)
between the hair surface and a urethane pad along the hair is
measured.
[0116] A: Above 5% (excluding 5%) to 10% reduction of Friction
force, compared to Control
[0117] B: Up to 5% (including 5%) reduction of Friction force,
compared to Control
[0118] C: Control or Equal to Control
[0119] D: Increased Friction force, compared to Control
Product Appearance
[0120] The product appearance is evaluated by 6 panelists, when
dispensing 0.4 ml of a conditioner product from a package. [0121]
A: From 3 to 6 panelists answered that the product had a thick
product appearance and perceived positive impression from its
appearance. [0122] B: From 1 to 2 panelists answered that the
product has a thick product appearance and perceived positive
impression from its appearance. [0123] C: Control
TABLE-US-00002 [0123] TABLE 1 Ex. 1 Ex. 2 Ex. 3 Ex. 4 Ex. i Ex. ii
Ex. iii Yield point 37 47 52 50 >33 25 16 Conversion rate of 100
100 100 100 <90 55 100 High melting point fatty compounds to Gel
matrix D-spacing >50 >50 -- -- -- 29 >50 Wet conditioning
A A A A D C B before rinsing Wet conditioning A A A A D C C after
rinsing Dry conditioning B A A B D C C Product appearance A A B --
-- C --
[0124] The embodiments disclosed and represented by the previous
"Ex. 1" through "Ex. 4" are hair conditioning compositions of the
present invention which are particularly useful for rinse-off use.
Such embodiments have many advantages. For example, they provide
improved conditioning benefits, especially improved wet
conditioning benefits after rinsing and improved dry conditioning,
while maintaining wet conditioning benefit before rinsing.
[0125] The dimensions and values disclosed herein are not to be
understood as being strictly limited to the exact numerical values
recited. Instead, unless otherwise specified, each such dimension
is intended to mean both the recited value and a functionally
equivalent range surrounding that value. For example, a dimension
disclosed as "40 mm" is intended to mean "about 40 mm.
[0126] Every document cited herein, including any cross referenced
or related patent or application, is hereby incorporated herein by
reference in its entirety unless expressly excluded or otherwise
limited. The citation of any document is not an admission that it
is prior art with respect to any invention disclosed or claimed
herein or that it alone, or in any combination with any other
reference or references, teaches, suggests or discloses any such
invention. Further, to the extent that any meaning or definition of
a term in this document conflicts with any meaning or definition of
the same term in a document incorporated by reference, the meaning
or definition assigned to that term in this document shall
govern.
[0127] While particular embodiments of the present invention have
been illustrated and described, it would be obvious to those
skilled in the art that various other changes and modifications can
be made without departing from the spirit and scope of the
invention. It is therefore intended to cover in the appended claims
all such changes and modifications that are within the scope of
this invention.
* * * * *