U.S. patent application number 12/781504 was filed with the patent office on 2010-11-18 for thickening composition.
This patent application is currently assigned to AJINOMOTO CO. INC. Invention is credited to Akemi Kunieda, Hironobu KUNIEDA, Koichiro Sagawa, Kazuhiko Tobita.
Application Number | 20100292115 12/781504 |
Document ID | / |
Family ID | 34863466 |
Filed Date | 2010-11-18 |
United States Patent
Application |
20100292115 |
Kind Code |
A1 |
KUNIEDA; Hironobu ; et
al. |
November 18, 2010 |
THICKENING COMPOSITION
Abstract
The present invention provides a thickening composition
simultaneously exhibiting suitable thickening performance and
superior usability, which contains N-long-chain acyl acidic amino
acid and/or a salt thereof, an amphipathic substance, an inorganic
salt, and water as essential components, and has a viscosity of not
less than 200 mPas. By the addition of the thickening composition,
moreover, cleansing compositions and cosmetic compositions for
skin, hair and the like, which maintain thickening performance and
usability, while containing N-long-chain acyl acidic amino acid
and/or a salt thereof are provided.
Inventors: |
KUNIEDA; Hironobu;
(Yokohama-shi, JP) ; Kunieda; Akemi;
(Yokohama-shi, JP) ; Tobita; Kazuhiko;
(Kawasaki-shi, JP) ; Sagawa; Koichiro;
(Kawasaki-shi, JP) |
Correspondence
Address: |
OBLON, SPIVAK, MCCLELLAND MAIER & NEUSTADT, L.L.P.
1940 DUKE STREET
ALEXANDRIA
VA
22314
US
|
Assignee: |
AJINOMOTO CO. INC
Tokyo
JP
|
Family ID: |
34863466 |
Appl. No.: |
12/781504 |
Filed: |
May 17, 2010 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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11501741 |
Aug 10, 2006 |
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12781504 |
|
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PCT/JP05/02513 |
Feb 10, 2005 |
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11501741 |
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Current U.S.
Class: |
510/119 ;
510/158; 510/513 |
Current CPC
Class: |
A61K 2800/48 20130101;
C11D 1/83 20130101; C11D 1/667 20130101; C11D 1/10 20130101; A61Q
19/10 20130101; C11D 1/72 20130101; A61K 8/44 20130101 |
Class at
Publication: |
510/119 ;
510/158; 510/513 |
International
Class: |
A61K 8/41 20060101
A61K008/41; A61Q 5/02 20060101 A61Q005/02; A61Q 19/10 20060101
A61Q019/10; C11D 3/60 20060101 C11D003/60 |
Foreign Application Data
Date |
Code |
Application Number |
Feb 13, 2004 |
JP |
2004-037365 |
Sep 17, 2004 |
JP |
2004-271394 |
Claims
1. A thickening composition, comprising: (A) at least one
N-long-chain acyl acidic amino acid and/or a salt thereof; (B) at
least one amphipathic substance; (C) at least one inorganic salt;
and (D) water, wherein said thickening composition has a viscosity
of not less than 200 mPas.
2. The thickening composition of claim 1, wherein said at least one
amphipathic substance (B) has an organic value and an inorganic
value satisfying the following formula (I): (inorganic
value).ltoreq.-5.times.(organic value)+2500 (1).
3. The thickening composition of claim 1, wherein the weight ratio
of (A):(B) is 90:10 to 30:70; the weight ratio of (A):(C) is
99.5:0.5 to 50:50; and the weight ratio of the total weight of (A),
(B), and (C):(D) is 2:98 to 70:30.
4. The thickening composition of claim 2, wherein the weight ratio
of (A):(B) is 90:10 to 30:70; the weight ratio of (A):(C) is
99.5:0.5 to 50:50; and the weight ratio of the total weight of (A),
(B), and (C):(D) is 2:98 to 70:30.
5. The thickening composition of claim 1, wherein said amino acid
of (A) is glutamic acid.
6. The thickening composition of claim 2, wherein said amino acid
of (A) is glutamic acid.
7. The thickening composition of claim 1, wherein said acyl group
of (A) derives from one or more members selected from the group
consisting of caprylic acid, capric acid, lauric acid, myristic
acid, stearic acid, palmitic acid, oleic acid, linoleic acid,
behenic acid, coconut fatty acid, palm fatty acid, hydrogenated
beef tallow fatty acid, and mixtures thereof.
8. The thickening composition of claim 2, wherein said acyl group
of (A) derives from one or more members selected from the group
consisting of caprylic acid, capric acid, lauric acid, myristic
acid, stearic acid, palmitic acid, oleic acid, linoleic acid,
behenic acid, coconut fatty acid, palm fatty acid, hydrogenated
beef tallow fatty acid, and mixtures thereof.
9. The thickening composition of claim 1, wherein said at least one
amphipathic substance (B) comprises one or more members selected
from the group consisting of glyceryl monofatty acid,
propyleneglycol monofatty acid, butyleneglycol monofatty acid,
diethyleneglycol monofatty acid, monofatty acid
N-methylethanolamide, lauryl glycol hydroxypropylether,
polyoxypropylene(1)coconut fatty acid monoisopropanolamide, and
mixtures thereof.
10. The thickening composition of claim 2, wherein said at least
one amphipathic substance (B) comprises one or more members
selected from the group consisting of glyceryl monofatty acid,
propyleneglycol monofatty acid, butyleneglycol monofatty acid,
diethyleneglycol monofatty acid, monofatty acid
N-methylethanolamide, lauryl glycol hydroxypropylether,
polyoxypropylene(1)coconut fatty acid monoisopropanolamide, and
mixtures thereof.
11. The thickening composition of claim 1, wherein said at least
one amphipathic substance (B) comprises a glyceryl monofatty acid
having not less than 8 and not more than 18 carbon atoms.
12. The thickening composition of claim 2, wherein said at least
one amphipathic substance (B) comprises a glyceryl monofatty acid
having not less than 8 and not more than 18 carbon atoms.
13. The thickening composition of claim 1, wherein said at least
one inorganic salt (C) comprises an alkaline earth metal inorganic
salt.
14. The thickening composition of claim 2, wherein at said least
one inorganic salt (C) comprises an alkaline earth metal inorganic
salt.
15. The thickening composition of claim 1, further comprising: (E)
at least one polyhydric alcohol.
16. The thickening composition of claim 2, further comprising: (E)
at least one polyhydric alcohol.
17. The thickening composition of claim 1, further comprising: (F)
at least one chelating agent.
18. The thickening composition of claim 2, further comprising: (F)
at least one chelating agent.
19. A cleansing composition, comprising a thickening composition of
claim 1.
20. A cosmetic composition, comprising a thickening composition of
claim 1.
Description
TECHNICAL FIELD
[0001] The present invention relates to thickening compositions
containing four components of N-long-chain acyl acidic amino acid
and/or a salt thereof, an amphipathic substance, an inorganic salt
and water, which simultaneously show suitable thickening
performance and superior usability, and cleansing compositions and
cosmetic compositions containing the same.
BACKGROUND ART
[0002] N-long-chain acyl acidic amino acid and/or a salt thereof
have long been known to be useful as less irritant materials as
compared to conventionally-used skin or hair cleansing compositions
containing an anion surfactant such as alkylsulfate, alkylsulfonate
and the like as a main component.
[0003] However, addition of N-long chain acyl glutamic acid and/or
a salt thereof to skin and hair cleansing compositions containing
alkylsulfate, alkylsulfonate, polyoxyethylene alkylether sulfate
and the like as a main agent for the purpose of reducing the
irritation problematically decreases the viscosity.
[0004] To solve this problem, attempts have been made to thicken
N-long-chain acyl acidic amino acid-containing cleansing agents by
the addition of an ester or ether polymer thickener having a
polyoxyethylene chain (JP-A-6-158089), addition of a polysaccharide
thickener (JP-A-6-264090) and addition of a cellulose natural
polymer derivative (JP-A-2003-55690). However, addition of a
sufficient amount of a polymer thickener to ensure viscosity has
resulted in new problems relating to the sense of use, such as poor
foaming, sliminess during rinsing, which is characteristic of
polymers, and the like.
[0005] In an effort to thicken N-long-chain acyl acidic amino
acid-containing cleansing compositions, moreover, addition of
colloidal silicate to an aqueous solution of N-long-chain acyl
acidic amino acid salt has been known, though a sufficient
viscosity as a liquid cleansing composition cannot be achieved
(JP-A-7-11288).
[0006] On the other hand, as gel compositions containing a
N-long-chain acyl acidic amino acid and/or a salt thereof, a gel
composition having thixotropy (JP-A-6-057290), and an aqueous
thickening gel composition and a liquid oil-in-water emulsion
composition (JP-A-9-301846) have been reported. They are used as
base materials for the production of skin external agents such as
cosmetic serum, cream and the like, which contain N-long-chain acyl
acidic amino acid and/or a salt thereof. However, since these
aqueous thickening gel compositions and liquid oil-in-water
emulsion compositions do not have a foaming power or a cleaning
power, a sufficient function as a skin and hair cleansing
composition has not been achieved.
[0007] Thus, a thickening composition containing n-long-chain acyl
acidic amino acid and/or a salt thereof, which shows suitable
thickening performance without impairing the foamability and sense
of use of n-long-chain acyl acidic amino acid and/or a salt thereof
has been strongly desired.
DISCLOSURE OF THE INVENTION
[0008] The present inventors have conducted intensive studies in an
attempt to solve the aforementioned problems and found that a
thickening composition simultaneously exhibiting suitable
thickening performance and superior usability can be obtained by
the use of N-long-chain acyl acidic amino acid and/or a salt
thereof, an amphipathic substance, an inorganic salt and water as
essential components, and that the use of the thickening
composition affords a cleansing agent and a cosmetic composition
containing N-long-chain acyl acidic amino acid and/or a salt
thereof, which satisfy thickening performance and the sense of
use.
[0009] Accordingly, the present invention comprises the following
embodiments.
[1] A thickening composition comprising four components of (A)
N-long-chain acyl acidic amino acid and/or a salt thereof, (B) an
amphipathic substance, (C) an inorganic salt and (D) water as
essential components, which shows a viscosity of not less than 200
mPas. [2] The thickening composition of [1], wherein the
amphipathic substance of component (B) shows an organic value and
an inorganic value satisfying the following formula [1]:
(inorganic value).ltoreq.-5.times.(organic value)+2500 [1]
[3] The thickening composition of [1] or [2], wherein the weight
ratio of component (A):component (B) is 90:10-30:70, the weight
ratio of component (A):component (C) is 99.5:0.5-50:50 and the
weight ratio of the total weight of component (A), component (B)
and component (C):component (D) is 2:98-70:30. [4] The thickening
composition of any of [1] to [3], wherein the amino acid of
component (A) is glutamic acid. [5] The thickening composition of
any of [1] to [4], wherein the acyl group of component (A) derives
from one or more kinds selected from the group consisting of
caprylic acid, capric acid, lauric acid, myristic acid, stearic
acid, palmitic acid, oleic acid, linoleic acid, behenic acid,
coconut fatty acid, palm fatty acid and hydrogenated beef tallow
fatty acid. [6] The thickening composition of any of [1] to [5],
wherein the component (B) is one or more kinds selected from
glyceryl monofatty acid, propyleneglycol monofatty acid,
butyleneglycol monofatty acid, diethyleneglycol monofatty acid,
monofatty acid N-methylethanolamide, lauryl glycol
hydroxypropylether and polyoxypropylene(1)coconut fatty acid
monoisopropanolamide. [7] The thickening composition of any of [1]
to [6], wherein the component (B) is glyceryl monofatty acid having
not less than 8 and not more than 18 carbon atoms. [8] The
thickening composition of any of [1] to [7], wherein the component
(C) is an alkaline earth metal inorganic salt. [9] The thickening
composition of any of [1] to [8], further comprising (E) polyhydric
alcohol. [10] The thickening composition of any of [1] to [9],
further comprising (F) chelating agent. [11] A cleansing
composition comprising a thickening composition of any one of [1]
to [10]. [12] A cosmetic composition comprising a thickening
composition of any one of [1] to [10].
DETAILED DESCRIPTION OF THE INVENTION
[0010] N-long-chain acyl acidic amino acid and/or a salt thereof to
be used as component (A) in the present invention may be those
obtained by known methods. For example, Schotten-Baumann reaction
of acidic amino acid and fatty acid halide is widely known.
[0011] As the acidic amino acid for component (A), glutamic acid,
aspartic acid and the like can be used. These amino acids may be
any of an L form, a D form and a DL form, or may be a mixture of
two or more kinds selected from these. Since stability and
usability of the material after acylation are superior, glutamic
acid is preferable.
[0012] As the acyl group of component (A), a straight chain or
branched chain acyl group derived from saturated or unsaturated
fatty acids having 8 to 22 carbon atoms can be used. As fatty acid,
for example, caprylic acid, capric acid, lauric acid, myristic
acid, stearic acid, isostearic acid, palmitic acid, oleic acid,
linoleic acid, behenic acid, coconut fatty acid, palm fatty acid,
hydrogenated beef tallow fatty acid, and the like can be mentioned.
One kind of these may be used, or two or more kinds selected from
the above-mentioned group may be used in a mixture. Particularly,
coconut fatty acid, lauric acid and myristic acid are preferable,
since they are superior in foaming and foam quality.
[0013] The salt of component (A) is not particularly limited and,
for example, alkali metals such as sodium, potassium and the like,
alkaline earth metals such as calcium, magnesium and the like,
inorganic salts such as aluminum, zinc and the like, organic amines
such as ammonia, monoethanolamine, diethanolamine, triethanolamine
and the like, and organic salts such as basic amino acids (e.g.,
arginine, lysine and the like) and the like can be mentioned. One
kind of these may be used, or two or more kinds selected from the
above-mentioned group may be used in a mixture. Alkali metal salts,
organic amine salts and basic amino acids are preferable. and
sodium, potassium, triethanolamine arginine are particularly
preferable, since they are easily available and superior in
handling property and the like.
[0014] The amphipathic substance to be used as component (B) in the
present invention is not particularly limited structurally as long
as it shows surface activity, forms an aggregate with component
(A), N-long-chain acyl acidic amino acid salt, based on the balance
between hydrophilicity and hydrophobicity, and provides a
thickening effect.
[0015] For the balance between hydrophilicity and hydrophobicity,
those having an organic value and an inorganic value satisfying the
range defined by the following relational formula 1 are
selected.
(inorganic value).ltoreq.-5.times.(organic value)+2500 [1]
[0016] When the inorganic value exceeds -5.times.(organic
value)+2500, the balance necessary for forming an aggregate with
component (A), N-long-chain acyl acidic amino acid salt, is
disturbed and the thickening effect becomes low. The inorganic
value and organic value are calculated from Organic Conception
Diagram--Basic and Application (1984) (Yoshio Koda et al., Sankyo
Publishing Co., Ltd.) or Emulsion Formulation Design with Organic
Conception Diagram (1997) (ed. Nihon Emulsion Co., Ltd.). Both the
inorganic value and organic value are 0 or positive numbers.
[0017] Specifically, glyceryl monofatty acid, glyceryl difatty
acid, glyceryl trifatty acid, propyleneglycol monofatty acid,
butyleneglycol monofatty acid, diethyleneglycol monofatty acid
Monofatty acid N-methylethanolamide, lauryl glycol
hydroxypropylether, polyoxypropylene(1)coconut fatty acid
monoisopropanolamide and the like can be mentioned. One kind of
these may be used, or two or more kinds selected from the to
above-mentioned group may be used in a mixture. Of them, glyceryl
monofatty acid, propyleneglycol monofatty acid, butyleneglycol
monofatty acid, diethyleneglycol monofatty acid Monofatty acid
N-methylethanolamide, lauryl glycol hydroxypropylether, and
polyoxypropylene(1)coconut fatty acid monoisopropanolamide are
preferable, since they are particularly low molecule and superior
in usability.
[0018] As the glyceryl monofatty acid, glyceryl monocaprylate,
glyceryl monocaprate, glyceryl monolaurate, glyceryl monomyristate,
glyceryl monopalmitate, glyceryl monostearate, glyceryl
monoisostearate and the like can be specifically mentioned. One
kind of these may be used, or two or more kinds selected from the
above-mentioned group may be used in a mixture. Of these, glyceryl
monocaprylate, glyceryl monocaprate, glyceryl monolaurate, glyceryl
monomyristate are preferable, since an aggregate is easily formed
with component (A), N-long-chain acyl acidic amino acid and/or a
salt thereof, and component (C), a salt. As the fatty acid, a
saturated or unsaturated fatty acid having 8 to 18 carbon atoms can
be used, which may contain substituent(s) to the extent that the
effect of the invention is not inhibited. When the carbon number is
not more than 8, the thickening effect is low, and when it is not
less than 18, the solubility is low, thus permitting easy
precipitation. It is preferably 8-14, since stable and sustained
thickening performance can be maintained, and more preferably
10-12, since foaming performance can be maintained.
[0019] As the propyleneglycol monofatty acid, propyleneglycol
monocaprylate, propyleneglycol monocaprate, propyleneglycol
monolaurate, propyleneglycol monomyristate, propyleneglycol
monopalmitate, propyleneglycol monostearate, propyleneglycol
monoisostearate and the like can be specifically mentioned. One
kind of these may be used, or two or more kinds selected from the
above-mentioned group may be used in a mixture. Of these,
propyleneglycol monocaprylate, propyleneglycol monocaprate,
propyleneglycol monolaurate and propyleneglycol monomyristate are
preferable, since an aggregate is easily formed with component (A),
N-long-chain acyl acidic amino acid and/or a salt thereof, and
component (C), a salt. As the fatty acid, a saturated or
unsaturated fatty acid having 8 to 18 carbon atoms can be used,
which may contain substituent to the extent that the effect of the
invention is not inhibited. When the carbon number is not more than
8, the thickening effect is low, and when it is not less than 18,
the solubility is low, thus permitting easy precipitation. It is
preferably 8-14, since stable and sustained thickening performance
can be maintained, and more preferably 10-12, since foaming
performance can be maintained.
[0020] As the butyleneglycol monofatty acid, butyleneglycol
monocaprylate, butyleneglycol monocaprate, butyleneglycol
monolaurate, butyleneglycol monomyristate, butyleneglycol
monopalmitate, butyleneglycol monostearate, butyleneglycol
monoisostearate and the like can be specifically mentioned. One
kind of these may be used, or two or more kinds selected from the
above-mentioned group may be used in a mixture. Of these,
butyleneglycol monocaprylate, butyleneglycol monocaprate,
butyleneglycol monolaurate and butyleneglycol monomyristate are
preferable, since an aggregate is easily formed with component (A),
N-long-chain acyl acidic amino acid and/or a salt thereof and
component (C), a salt. As the fatty acid, a saturated or
unsaturated fatty acid having 8 to 18 carbon atoms can be used,
which may contain substituent(s) to the extent that the effect of
the invention is not inhibited. When the carbon number is not more
than 8, the thickening effect is low, and when it is not less than
18, the solubility is low, thus permitting easy precipitation. It
is preferably 8-14, since stable and sustained thickening
performance can be maintained, and more preferably 10-12, since
foaming performance can be maintained.
[0021] As the diethyleneglycol monofatty acid, diethyleneglycol
monocaprylate, diethyleneglycol monocaprate, diethyleneglycol
monolaurate, diethyleneglycol monomyristate, diethyleneglycol
monopalmitate, diethyleneglycol monostearate, diethyleneglycol
monoisostearate and the like can be specifically mentioned. One
kind of these may be used, or two or more kinds selected from the
above-mentioned group may be used in a mixture. Of these,
diethyleneglycol monocaprylate, diethyleneglycol monocaprate,
diethyleneglycol monolaurate and diethyleneglycol monomyristate are
preferable, since an aggregate is easily formed with component (A),
N-long-chain acyl acidic amino acid and/or a salt thereof and
component (C), a salt. As the fatty acid, a saturated or
unsaturated fatty acid having 8 to 18 carbon atoms can be used,
which may contain substituent(s) to the extent that the effect of
the invention is not inhibited. When the carbon number is not more
than 8, the thickening effect is low, and when it is not less than
18, the solubility is low, thus permitting easy precipitation. It
is preferably 8-14, since stable and sustained thickening
performance can be maintained, and more preferably 10-12, since
foaming performance can be maintained.
[0022] As the monofatty acid N-methylethanolamide, monocapryloyl
N-methylethanolamide, monocaproyl N-methylethanolamide, monolauroyl
N-methylethanolamide, monomyristoyl N-methylethanolamide,
monopalmitoyl N-methylethanolamide, monostearoyl
N-methylethanolamide, monoisostearoyl N-methylethanolamide and the
like can be specifically mentioned. One kind of these may be used,
or two or more kinds selected from the above-mentioned group may be
used in a mixture. Of these, monocapryloyl N-methylethanolamide,
monocaproyl N-methylethanolamide, monolauroyl N-methylethanolamide,
and monomyristoyl N-methylethanolamide are preferable, since an
aggregate is easily formed with component (A), N-long-chain acyl
acidic amino acid and/or a salt thereof and component (C), a salt.
As the fatty acid, a saturated or unsaturated fatty acid having 8
to 18 carbon atoms can be used, which may contain substituent(s) to
the extent that the effect of the invention is not inhibited. When
the carbon number is not more than 8, the thickening effect is low,
and when it is not less than 18, the solubility is low, thus
permitting easy precipitation. It is preferably 8-14, since stable
and sustained thickening performance can be maintained, and more
preferably 10-12, since foaming performance can be maintained. As
the lauryl glycol hydroxypropyl ether, commercially available
Viscosafe LPE (manufactured by Kawaken Fine Chemicals Co., Ltd.)
can be specifically mentioned.
[0023] As the polyoxypropylene(1)coconut fatty acid
monoisopropanolamide, commercially available Amizett 1PC
(manufactured by Kawaken Fine Chemicals Co., Ltd.) can be
specifically mentioned.
[0024] The inorganic salt to be used as component (C) in the
present invention is not particularly limited and salts with
mineral acids such as sulfuric acid, hydrochloric acid, phosphoric
acid and the like, salts with carbonic acid, salts with alkali
metal and salts with alkaline earth metal can be mentioned.
Specifically, sodium chloride, potassium chloride, magnesium
chloride, calcium chloride, sodium sulfate, sodium hydrogensulfate,
potassium sulfate, potassium hydrogensulfate, magnesium sulfate,
calcium sulfate, monobasic sodium phosphate, dibasic sodium
phosphate, monobasic potassium phosphate, dibasic potassium
phosphate, sodium carbonate, sodium hydrogencarbonate, potassium
carbonate, potassium hydrogencarbonate, magnesium carbonate,
calcium carbonate and the like can be mentioned. One kind of these
may be used, or two or more kinds selected from the above-mentioned
group may be used in a mixture. Particularly, alkaline earth metal
salt is preferable, calcium salt and magnesium salt are more
preferably, and magnesium salt is still more preferable, since the
thickening effect is high.
[0025] As the counter anion, chloride ion is preferable, since a
thickening effect and high transparency can be afforded. As
specific compounds, calcium chloride and magnesium chloride are
preferably, and magnesium chloride is particularly preferable.
[0026] Water to be used as component (D) in the present invention
is not particularly limited as long as it has a purity of the level
applicable to cleansing agents and cosmetic compositions.
Specifically, ion-exchanged water, well water, natural water,
groundwater, public water, hard water, soft water and the like can
be used. One kind of these may be used, or two or more kinds
selected from the above-mentioned group may be used in a mixture.
Ion-exchanged water is preferable from the aspects of preservation
stability and hygiene of the product of the present invention.
[0027] The weight ratio of component (A) and component (B) to be
used in the present invention is generally 90:10-30:70. When the
component (B) is less than 10, the thickening effect becomes weak,
and when component (B) is greater than 70, a problem of easy
precipitation occurs. The ratio is preferably 85:15-35:65 since an
aggregate of component (A) and component (B) is easily formed and
sustainability is afforded. It is more preferably 85:15-50:50,
since sufficient foamability and liquid composition can be
achieved.
[0028] The weight ratio of component (A) and component (C) to be
used in the present invention is generally 99.5:0.5-50:50. When
component (C) is less than 0.5, the thickening effect is low, and
when it is greater than 50, precipitation and the like
problematically occur. The weight ratio of 99:1-55:45 is
preferable, since a stable and sustained thickening effect can be
expected.
[0029] The weight ratio of the total weight of component (A),
component (B) and component (C) to be used in the present invention
and component (D) is generally 2:98-70:30. When the total weight of
component (A), component (B) and component (C) is less than 2, the
function of the cleansing agent, such as foaming, foam quality and
the like, become insufficient and the thickening effect also
becomes low, and when it is greater than 70, precipitation and the
like occur, thus problematically degrading the usability. The ratio
of 2.5:97.5-50:50 is preferable, since usability as a cleansing
agent and stable and sustained thickening effect can be
afforded.
[0030] The weight ratio of component (A) and component (D) in a
thickening composition is generally 0.5:99.5-68:32. It is
preferably 1:99-46:54, more preferably 5:95-40:60, to achieve
usability as a cleansing agent. When component (A) is less than
0.5, sufficient cleansing effect and moist feeling after washing
cannot be afforded, and when component (A) is greater than 68,
usability is problematically degraded.
[0031] The production method of the thickening composition of the
present invention includes mixing component (A), component (B) and
component (D) at a given ratio, dissolving them by heating at
60-80.degree. C., and adding component (C) to give a uniform
solution. Thereafter, the mixture is cooled to room temperature to
give a thickening composition.
[0032] The thickening composition of the present invention has a
viscosity of generally 200 mPas-50000 mPas. The viscosity can be
freely controlled by changing the ratio of components (A), (B), (C)
and (D). It is preferably 250 mPas-40000 mPas, more preferably 300
mPas-25000 mPas, still more preferably 350 mPas-10000 mPas, from
the aspect of easy use as a cleansing composition.
[0033] The thickening composition of the present invention can be
added to cosmetic compositions and cleansing compositions. While
the component (A) in the entire cosmetic composition and cleansing
composition is not particularly limited, its content is generally
selected from the range of 0.2-60%. When component (A) is less than
0.2%, the effect as a thickening composition tends to be
unremarkable, and when it is greater than 60%, sufficient usability
as a cosmetic composition or cleansing composition may be lost.
Since a remarkable thickening effect is exhibited, its lower limit
is preferably not less than 0.3%, more preferably not less than
0.5%, still more preferably not less than 1%, further preferably
not less than 2%, and particularly preferably not less than 3%.
Since cosmetic compositions and cleansing compositions with good
sense of use can be provided, its upper limit is preferably not
more than 55%, more preferably not more than 50%, still more
preferably not more than 45%, further preferably not more than 40%,
and particularly preferably not more than 35%.
[0034] While cosmetic compositions and cleansing compositions
containing the thickening composition of the present invention show
a good viscosity of generally 200 mPas-50000 mPas, it is preferably
250 mPas-40000 mPas, more preferably 300 mPas-25000 mPas, still
more preferably 350 mPas-10000 mPas, since such cosmetic
compositions and cleansing compositions are easy to use.
[0035] As the thickening composition of the present invention, the
above-mentioned thickening composition of the present invention
preferably contains (E) polyhydric alcohol, since a further
thickening effect can be exhibited. As the polyhydric alcohol,
glycerol, diglycerol, sorbitol, propylene glycol, dipropylene
glycol, butylene glycol, polyethylene glycol and the like can be
mentioned. Since a superior thickening effect is exhibited, not
less than trivalent polyhydric alcohol is preferable, glycerol,
diglycerol and sorbitol are more preferable, and sorbitol is
particularly preferable.
[0036] As the polyhydric alcohol of component (E), one kind or two
or more kinds may be used in combination. While its content is not
particularly limited, it is preferably 0.2-50 wt %, more preferably
1-20 wt %, relative to the whole composition. When the content of
component (E) is less than 0.2 wt %, a sufficient thickening effect
cannot be afforded and a moist feeling that should be provided by
polyhydric alcohol is not sufficiently obtained. When the content
is greater than 50 wt %, foaming and a feeling of the composition
are degraded.
[0037] As the thickening composition of the present invention, the
above-mentioned thickening composition of the present invention
preferably contains (F) a chelating agent, since a more superior
thickening effect can be exhibited. As the chelating agent,
ethylenediamine tetraacetic acid and/or a salt thereof (EDTA),
hydroxyethyl ethylenediamine triacetic acid and/or a salt thereof
(HEDTA), dihydroxy ethylethylenediamine diacetic acid and/or a salt
thereof (DHEDTA), 1,3-propanediamine tetraacetic acid and/or a salt
thereof (PDTA), diethylenetriamine pentaacetic acid and/or a salt
thereof (DTPA), triethylenetetramine hexaacetic acid and/or a salt
thereof (TTHA), nitrilotriacetic acid and/or a salt thereof (NTA),
hydroxyethylimino diacetic acid and/or a salt thereof (HIMDA) and
the like can be mentioned. Since a superior thickening effect is
exhibited, those unneutralized are particularly preferable, such as
ethylenediamine tetraacetic acid, disodium
ethylenediaminetetraacetate, dihydroxy ethylethylenediamine
diacetic acid, 1,3-propanediamine tetraacetic acid and diethylene
triamine pentaacetic acid, and ethylenediamine tetraacetic acid and
disodium ethylenediaminetetraacetate are particularly
preferable.
[0038] As the chelating agent for component (F), one kind or two or
more kinds may be used in combination. While its content is not
particularly limited, it is preferably 0.01-1.0 wt %, more
preferably 0.05-0.5 wt %, relative to the whole composition. When
the content of component (E) is less than 0.01 wt %, a sufficient
thickening effect cannot be obtained, and the chelating performance
that should be afforded by the chelating agent is not sufficiently
obtained.
[0039] The thickening composition of the present invention can
appropriately contain, besides the aforementioned essential
components, various optional components used for general cosmetic
compositions, quasi drugs and the like, to the extent that the
effect of the invention is not inhibited. Specifically, components
including oil agents (camellia oil, corn oil, olive oil, rape oil,
coconut oil, palm oil, hydrogenated castor oil, bee wax, liquid
lanolin, liquid paraffin, squalene, vaseline, chain polysiloxane
such as dimethylpolysiloxane and the like, cyclic polysiloxane such
as octamethylcyclotetrasiloxane and the like, amino-modified
silicone oil and the like), surfactants (ionic surfactants such as
alkylsulfate, alkylether sulfate ester salt, fatty acid salt,
sulfosuccinate, .alpha.-olefinsulfonate, N-acylsarcosinate,
N-acylmethyltaurine salt, alkylethercarboxylate, phosphate ester
salt and the like, imidazoline ampholytic surfactant, betaine
ampholytic surfactant etc.), thickeners (polymer thickeners such as
guar gum, starch, carageenan, xanthan gum, ethylcellulose,
methylhydroxypropylstarch, carboxymethylcellulose, carboxyvinyl
polymer, bentonite, hectorite, and the like), preservative,
fragrance, UV absorber, moisturizing agent, physiologically active
component, antioxidant, anti-inflammatory agent, antibacterial
agent, antiperspirant, neutralizer, pH adjusting agent and the like
can be mentioned, which can be added depending on the specific use
and forms of the cleansing compositions and cosmetic
compositions.
[0040] While the use of the thickening composition of the present
invention is not particularly limited, various cleansing
compositions and cosmetic compositions can be provided. For
example, cosmetic soap, facial cleanser (cream.cndot.paste,
liquid.cndot.gel, using aerosol and the like), cleansing cosmetics
such as shampoo and the like, hair cosmetics such as hair treatment
agents (including cream, mist, oil, gel, other forms and split-ends
coating agent), hair setting agents (hair oil, setting lotion,
curler lotion, pomade, stick pomade, pomade for Japanese hairdos,
hair spray, hair mist, hair liquid, hair foam, hair gel, water
grease) and the like, basic skin care such as general
cream.cndot.skin milk (cleansing cream, cold cream, vanishing
cream, hand cream and the like), shaving cream (after shaving
cream, shaving cream and the like), lotion (hand lotion, general
face lotion and the like), shaving lotion (after shaving lotion,
shaving lotion and the like), cosmetic oil, pack and the like,
make-up cosmetics such as foundation (cream, liquid and the like),
eye cream.cndot.eye shadow mascara and the like, perfumes such as
general perfume, cream perfume, powder perfume and the like,
sunburn.cndot.sunburn proof cosmetics such as sunburn.cndot.sunburn
proof cream, sunburn.cndot.sunburn proof lotion,
sunburn.cndot.sunburn proof oil and the like, nail cosmetics such
as nail cream.cndot.enamel.cndot.enamel remover and the like, eye
liner cosmetics, lip cosmetics such as lip stick.cndot.lip cream
and the like, mouth cavity cosmetics such as toothpaste and the
like, bath cosmetics such as bath salt, bath oil and the like, and
the like can be mentioned. Application to cleansing cosmetics, hair
cosmetics and the like is preferable, since the sense of use is
superior.
EXAMPLES
[0041] The present invention is explained in detail in the
following by referring to Examples, which are not to be construed
as limitative.
Example 1-Example 10
[0042] Thickening compositions and cleansing compositions having
the formulations described in the following Table 1 were prepared,
and evaluated for the viscosity thereof by the following
method.
(Viscosity measurement) The viscosity at 25.degree. C. was measured
with a Brookfield viscometer (manufactured by TOKIMC, DVL-B) after
using a rotor No. 3 or No. 4 at 30 rpm for 30 seconds.
TABLE-US-00001 TABLE 1 Comp. Comp. Comp. Ex. 1 Ex. 2 Ex. 3 Ex. 1
Ex. 2 Ex. 3 triethanolamine cocoyl glutamate 67.0 -- -- -- -- --
(30% aqueous solution) sodium cocoyl glutamate -- 20.0 20.0 20.0
20.0 -- glyceryl monolaurate -- 6.0 8.0 -- 8.0 8.0 glyceryl
monocaprate 14.0 -- -- -- -- -- calcium chloride 0.2 1.6 1.6 1.6 --
1.6 water 18.8 72.4 70.4 78.4 72.0 90.4 wt % 100.0 100.0 100.0
100.0 100.0 100.0 viscosity (mPa s) 700 3600 1800 30 50
precipitation Comp. Comp. Comp. Comp. Ex. 4 Ex. 5 Ex. 6 Ex. 7 Ex. 4
Ex. 5 Ex. 6 Ex. 7 sodium cocoyl glutamate 24.0 27.0 26.0 24.0 24.0
27.0 26.0 24.0 butyleneglycol laurate 6.0 -- -- 8.0 6.0 -- -- 8.0
propyleneglycol laurate -- 9.0 -- -- -- 9.0 -- -- propyleneglycol
stearate -- 7.8 -- -- -- 7.8 -- calcium chloride 4.5 1.5 2.1 -- --
-- -- -- magnesium chloride -- -- -- 2.8 -- -- -- -- water 65.5
62.5 64.1 65.2 70.0 64.0 66.2 68.0 100.0 100.0 100.0 100.0 100.0
100.0 100.0 100.0 viscosity (mPa s) 930 4090 2060 2600 23 11 15 81
Comp. Comp. Comp. Ex. 8 Ex. 9 Ex. 10 Ex. 8 Ex. 9 Ex. 10 sodium
cocoyl glutamate 24.0 24.0 24.0 24.0 24.0 24.0 diethyleneglycol
laurate -- -- -- -- -- -- cocoyl N-methylethanolamide 8.0 -- -- 8.0
-- -- lauryl glycol hydroxypropyl ether -- 5.0 -- -- 5.0 --
polyoxyethylene(1) coconut fatty acid monoisopropanolamide -- --
6.0 -- -- 6.0 magnesium chloride 2.8 2.8 3.7 -- -- -- water 65.2
68.2 66.3 68.0 71.0 70.0 100.0 100.0 100.0 100.0 100.0 100.0
viscosity (mPa s) 3360 3780 1530 100 120 70 Comp. Comp. Comp. Comp.
Ex. 11 Ex. 12 Ex. 13 Ex. 14 sodium cocoyl glutamate 22.0 26.0 24.0
24.0 triglycerol monolaurate 8.2 -- -- -- trioctanoin -- 7.8 -- --
PEG-10polyglyceryl-2 laurate -- -- 5.0 -- cetyl caprate -- -- --
8.0 calcium chloride 1.6 2.1 2.3 1.6 water 68.2 64.1 68.7 66.4
100.0 100.0 100.0 100.0 viscosity (mPa s) 52 separation separation
separation
[0043] As is clear from the results of Table 1-1-4, to obtain the
thickening composition of the present invention containing
component (A) N-long-chain acyl acidic amino acid and/or a salt
thereof, an amphipathic substance for component (B), an inorganic
salt for component (C), and water for component (D) are essential
components, where absence of any one of these components prevents
provision of the thickening composition. It was further found that
an amphipathic substance incapable of satisfying [formula 1]
(inorganic value).ltoreq.-5.times.(organic value)+2500 failed to
afford a thickening composition (Comparative Examples 11-14).
Example 11-Example 20
[0044] The thickening composition of the present invention was
added to the cleansing compositions having formulations described
in the following Table 2 at an optional ratio (Example 11-Example
20), and the viscosity was similarly measured.
TABLE-US-00002 TABLE 2 Comp. Comp. Comp. Comp. Ex. 11 Ex. 12 Ex. 13
Ex. 15 Ex. 16 Ex. 17 Ex. 18 sodium laureth sulfate (27% aqueous
solution) 40.0 40.0 40.0 40.0 40.0 40.0 40.0 cocamidopropyl betaine
(30% aqueous solution) 10.0 10.0 10.0 10.0 10.0 10.0 10.0 PCA-Na
(50% aqueous solution) 2.0 2.0 2.0 2.0 2.0 2.0 2.0 sodium chloride
0.8 0.8 0.8 0.8 0.8 0.8 0.8 polyquaternium-10 0.2 0.2 0.2 0.2 0.2
0.2 0.2 water 27.0 27.0 27.0 27.0 27.0 27.0 27.0 sodium cocoyl
glutamate 1.2 2.4 4.8 -- 1.2 2.4 4.8 glyceryl monolaurate 0.4 0.8
1.6 -- -- -- -- calcium chloride 0.1 0.2 0.3 -- -- -- -- water 18.3
16.6 13.3 20.0 18.8 17.6 15.2 100.0 100.0 100.0 100.0 100.0 100.0
100.0 viscosity (mPa s) 460 540 1050 1110 170 40 30 Comp. Comp.
Comp. Ex. 19 Ex. 20 Ex. 21 sodium laureth sulfate liquid (27%
aqueous solution) 40.0 40.0 40.0 cocamidopropyl betaine (30%
aqueous solution) 10.0 10.0 10.0 PCA-Na (50% aqueous solution) 2.0
2.0 2.0 sodium chloride 0.8 0.8 0.8 polyquaternium-10 0.2 0.2 0.2
water 27.0 27.0 27.0 sodium cocoyl glutamate 1.2 2.4 4.8 glyceryl
monolaurate 0.4 0.8 1.6 calcium chloride -- -- -- water 18.4 16.8
13.6 100.0 100.0 100.0 viscosity (mPa s) 187 63 81 Comp. Comp. Ex.
14 Ex. 15 Ex. 22 Ex. 23 sodium laureth sulfate (27% aqueous
solution) 35.0 35.0 35.0 35.0 cocamidopropyl betaine (30% aqueous
solution) 15.0 15.0 15.0 15.0 PCA-Na (50% aqueous solution) 2.0 2.0
2.0 2.0 PEG-7 glyceryl cocoate 2.0 2.0 2.0 2.0 behenyl alcohol --
-- 2.5 2.5 polyquaternium-10 0.2 0.2 0.2 0.2 water 25.8 25.8 23.3
23.3 sodium cocoyl glutamate 1.5 -- -- 1.5 sodium stearoyl
glutamate -- 1.5 1.5 -- glyceryl monolaurate 2.5 2.5 -- --
magnesium chloride 6-hydrate 0.6 0.1 -- -- water 15.4 15.9 18.5
18.5 100.0 100.0 100.0 100.0 viscosity (mPa s) 17400 37100
separation 117 Ex. 16 Ex. 17 Ex. 18 Ex. 19 EX. 20 sodium laureth
sulfate (27% aqueous solution) 35.0 35.0 35.0 35.0 35.0
cocamidopropyl betaine (30% aqueous solution) 15.0 15.0 15.0 15.0
15.0 PCA-Na (50% aqueous solution) 2.0 2.0 2.0 2.0 2.0 PEG-7
glyceryl cocoate 2.0 2.0 2.0 2.0 2.0 polyquaternium-10 0.2 0.2 0.2
0.2 0.2 triethanolamine cocoyl glutamate (30% aqueous solution)
16.6 16.6 16.6 16.6 16.6 glyceryl monolaurate 2.0 2.0 2.0 2.0 2.0
magnesium chloride 6-hydrate 0.2 0.2 0.2 0.2 0.2 glycerol -- 5.0 --
-- -- diglycerol -- -- 5.0 -- -- sorbitol (70% aqueous solution) --
-- -- 7.1 -- disodium ethylenediaminetetraacetate -- -- -- -- 0.2
water 27.0 22.0 22.0 19.9 26.8 100.0 100.0 100.0 100.0 100.0
viscosity (mPa s) 3709 4680 4820 8130 5600
[0045] As is clear from the results of Table 2, when addition of
component (A), sodium cocoyl glutamate, to a skin or hair cleansing
composition (Comparative Example 15) containing polyoxyethylene
alkylether sulfate (laureth sulfate) as a main component was
attempted, the viscosity markedly decreased as the amount of the
addition increased (Comparative Example 16-Comparative Example 18).
Moreover, when component (A), sodium cocoyl glutamate, and
component (B), glyceryl monolaurate, were added to a skin or hair
cleansing composition containing polyoxyethylene alkylether sulfate
(laureth sulfate) as a main component (Comparative Example 15),
sufficient viscosity as a cleansing composition could not be
obtained (Comparative Example 19-Comparative Example 23). In
contrast, when the thickening composition of the present invention
was added, a cleansing composition containing N-acyl acidic amino
acid and/or a salt thereof and having a suitable viscosity was
obtained (Example 11-Example 13). Moreover, the thickening effect
could be increased by adding polyhydric alcohol and/or chelating
agents to a cleansing composition (Example 16) containing the
thickening composition of the present invention (Example 17-Example
20). From the foregoing, higher contents of the thickening
composition of the present invention afforded higher viscosity, and
a technique for adding greater amounts of N-acyl acidic amino acid
and/or a salt thereof, which has been unattainable by conventional
techniques, has been achieved by the present invention.
Formulation Examples 1-3
[0046] Liquid cleansing compositions of the following formulations
were prepared according to conventional methods. As a result, good
viscosity and superior sense of use could be afforded.
Formulation Example 1
Shampoo Composition
TABLE-US-00003 [0047] (wt %) sodium laureth sulfate (27% aqueous
solution) 35.0 cocamidopropyl betaine (30% aqueous solution) 15.0
PCA-Na (50% aqueous solution) 2.0 PEG-7 glyceryl cocoate 2.0
polyquaternium-10 0.2 cocamide MEA 0.2 citric acid q.s. dimethicone
0.3 ceteareth-60 myristyl glycol 0.4 preservative q.s. TEA cocoyl
glutamate (30% aqueous solution) 20.0 glyceryl laurate 1.8
magnesium chloride (6-hydrate) 0.2 glycerol 3.0 disodium EDTA 0.2
water residual amount total 100.0
Formulation Example 2
Shampoo Composition
TABLE-US-00004 [0048] (wt %) sodium laureth sulfate (27% aqueous
solution) 30.0 cocamidopropyl betaine (30% aqueous solution) 15.0
PCA-Na (50% aqueous solution) 2.0 PEG-7 glyceryl cocoate 2.0
polyquaternium-10 0.2 cocoamide DEA 0.2 citric acid q.s.
dimethicone 0.3 ceteareth-60 myristyl glycol 0.4 glycol distearate
1.0 preservative q.s. TEA cocoyl glutamate (30% aqueous solution)
25.0 glyceryl laurate 2.6 magnesium chloride (6-hydrate) 0.3
sorbitol (70% aqueous solution) 6.0 disodium EDTA 0.2 water
residual amount total 100.0
Formulation Example 3
Shower Gel Composition
TABLE-US-00005 [0049] (wt %) sodium laureth sulfate (27% aqueous
solution) 35.0 cocamidopropyl betaine (30% aqueous solution) 15.0
PCA-Na (50% aqueous solution) 2.0 PEG-7 glyceryl cocoate 2.0
polyquaternium-10 0.2 cocoamide DEA 0.2 citric acid q.s.
dimethicone 0.3 phytosteryl/octyldodecyl lauroyl glutamate 0.2
glycol distearate 1.0 preservative q.s. sodium cocoyl glutamate 5.0
butyleneglycol laurate 2.0 magnesium chloride (6-hydrate) 0.2
sorbitol (70% aqueous solution) 6.0 disodium EDTA 0.2 water
residual amount total 100.0
INDUSTRIAL APPLICABILITY
[0050] By adding an amphipathic substance, an inorganic salt and
water at particular ratios to N-long-chain acyl acidic amino acid
and/or a salt thereof well known as a material difficult to be
thickened, suitable thickening performance and superior usability
can be afforded. Addition of the thickening composition has enabled
provision of cleansing compositions and cosmetic compositions for
skin, hair and the like, which maintain thickening performance and
usability, while containing N-long-chain acyl acidic amino acid
and/or a salt thereof.
[0051] This application is based on patent application Nos.
2004-37365 and 2004-271394 filed in Japan, the contents of which
are incorporated in full herein by this reference.
* * * * *