U.S. patent application number 10/390335 was filed with the patent office on 2004-01-15 for personal cleaning composition.
This patent application is currently assigned to PZ Cussons (International) Limited. Invention is credited to Atkinson, Helen Patricia, Davies, Craig Joseph, Fullman, Jason Ronald, Pawson, Emma.
Application Number | 20040009885 10/390335 |
Document ID | / |
Family ID | 9933181 |
Filed Date | 2004-01-15 |
United States Patent
Application |
20040009885 |
Kind Code |
A1 |
Davies, Craig Joseph ; et
al. |
January 15, 2004 |
Personal cleaning composition
Abstract
A packaged cleaning composition comprising a surfactant, an
aqueous acid component and an aqueous alkaline component, the acid
and alkali components being provided in separate compartments
within the package. On dispensing from the package the acid and
alkali react together creating carbon dioxide gas which acts upon
the surfactant to create a lather. The acid component is buffered
to a pH ranging from 2 to 6.5
Inventors: |
Davies, Craig Joseph;
(Staffs, GB) ; Fullman, Jason Ronald; (Cheshire,
GB) ; Atkinson, Helen Patricia; (Cheshire, GB)
; Pawson, Emma; (Cheshire, GB) |
Correspondence
Address: |
Michele J. Young
Salter & Michaelson
321 South Main Street
Providence
RI
02903-7128
US
|
Assignee: |
PZ Cussons (International)
Limited
|
Family ID: |
9933181 |
Appl. No.: |
10/390335 |
Filed: |
March 17, 2003 |
Current U.S.
Class: |
510/279 ;
510/509 |
Current CPC
Class: |
C11D 1/75 20130101; A61K
8/02 20130101; A61K 2800/222 20130101; C11D 1/90 20130101; A61K
2800/88 20130101; A61Q 19/10 20130101; C11D 3/10 20130101; C11D
3/042 20130101; C11D 3/2086 20130101; C11D 1/88 20130101; C11D
1/523 20130101; A61K 2800/52 20130101; C11D 3/044 20130101; C11D
1/662 20130101; C11D 17/041 20130101 |
Class at
Publication: |
510/279 ;
510/509 |
International
Class: |
D06L 001/00 |
Foreign Application Data
Date |
Code |
Application Number |
Mar 18, 2002 |
GB |
0206333.7 |
Claims
1. A cleaning composition provided in a package, wherein the
cleaning composition comprises at least one surfactant, a first
aqueous acidic component and a second aqueous alkaline component,
the first and second components being located in separate
compartments within the package prior to being dispensed therefrom,
whereby when the first and second components are combined together
before or after dispensing, carbon dioxide gas is generated which
acts on said surfactant to create a lather, characterised in that
the first acidic component further comprises a buffer such that the
pH of the first component is in the range from 2 to 6.5.
2. A cleaning composition according to claim 1, wherein the pH of
the first component is buffered in the range from 3 to 6.
3. A cleaning composition according to claim 2, wherein the pH of
the first component is buffered in the range from 4 to 5.
4. A cleaning composition according to claim 1, wherein the first
component comprises an alpha hydroxy acid in combination with a
salt thereof.
5. A cleaning composition according to claim 4, wherein the alpha
hydroxy acid is citric acid and the salt is sodium citrate.
6. A cleaning composition according to claim 1, wherein the acid
constitutes from 1% to 20% by weight of the first component.
7. A cleaning composition according to claim 1, wherein the second
component comprises a carbonate or bicarbonate.
8. A cleaning composition according to claim 7 wherein the
bicarbonate is potassium bicarbonate.
9. A cleaning composition according to claim 1, wherein tho
carbonate or bicarbonate constitutes from 1% to 25% by weight of
the second component.
10. A cleaning composition according to claim 1, the surfactant
comprises any of the following either alone or in combination
non-ionic, amphoteric, anionic and cationic surfactants.
11. A cleaning composition according to claim 10, wherein the
non-ionic surfactant comprises any of the following either alone or
in combination alkyl polyglucoside, fatty alcohol ethoxylates,
fatty acid alkanolamides and amine oxides and mixtures thereof.
12. A cleaning composition according to claim 10, wherein suitable
amphoteric surfactants include cocoamidopropyl betaine,
amphoacetates and amphopriopionates.
13. A cleaning composition according to claim 1, wherein the
composition comprises any of the following additional ingredients
either alone or in combination:--colourants, preservatives,
antibacterial agents, skin conditioning agents, thickeners, and
fragrance.
14. A cleaning composition as hereinbefore described with reference
to any of examples 1 to 5.
Description
[0001] This invention relates to a cleaning composition and more
particularly, but not exclusively to a personal cleaning
composition, that produces an instantaneous lather on exit from its
packaging.
[0002] It is of course known that instantaneous lather can be
obtained from cleaning compositions stored in aerosol containers.
The release of such compositions from an aerosol together with a
propellant creates foam ready for immediate use. However,
aerosol-based compositions are expensive and furthermore carry the
risk that the propellant gas is flammable.
[0003] EP 0745665A discloses an instantly foaming system without
the use of an aerosol container. Here a two-phase aqueous system is
employed whereby, when the two phases are combined together, a gas
is generated which acts upon the surfactant in the system to
produce lather. Typically, the reactive component in one phase is
citric acid and in the other is sodium bicarbonate. As the acidic
phase employed in this prior art system is of low pH, if dispensed
separately or in excess, it is likely to cause irritation when in
contact with the skin. This restricts the potential end use of this
technology, making it less suitable for facial washing and for use
on sensitive skin.
[0004] The present invention has been made from a consideration of
this problem.
[0005] According to the present invention there is provided a
cleaning composition provided in a package, wherein the cleaning
composition comprises at least one surfactant, a first aqueous
acidic component and a second aqueous alkaline component, the first
and second components being located in separate compartments within
the package prior to being dispensed therefrom, whereby when the
first and second components are combined together before or after
dispensing, carbon dioxide gas is generated which acts on said
surfactant to create a lather, characterised in that the first
acidic component further comprises a buffer such that the pH of the
first component is in the range from 2 to 6.5.
[0006] The use of the buffering system in the acid phase limits the
potential for skin irritation by bringing the pH of the first
component from 1 to 9 up to 2 to 6.5. The pH of the first component
is preferably buffered in the range from 3 to 6 and ideally in the
range from 1 to 5. This pH is much more acceptable for the skin and
is in line with the normal acid mantle of the skin.
[0007] The first component preferably, but not exclusively,
comprises an alpha hydroxy acid in combination with a salt thereof.
Most preferred is citric acid in combination with a citrate,
preferably sodium citrate. Other suitable acids include mineral
and/or organic acids such as malic acid, fumaric acid, succinic
acid and tartaric acid. The second component comprises a carbonate
or bicarbonate. Although sodium carbonate or sodium bicarbonate may
be used; ideally the second component comprises potassium
bicarbonate. Potassium bicarbonate is over twice as soluble as
sodium bicarbonate. This allows much higher levels to be used and
therefore allows a much higher amount of gas to be generated which
means that foam is generated in higher quantities and can be of
higher viscosity. As a key consumer driver for products of this
type is the amount and speed of lather production the use of
potassium bicarbonate yields significant advantages. These acid and
basic components not only combine to generate carbon dioxide but
they may also contribute to the buffering of the composition.
[0008] The acid shall constitute from 1% to 20% by weight of the
first component.
[0009] The carbonate or bicarbonate shall preferably constitute
from 1% to 25% by weight of the second component.
[0010] The surfactant or surfactants can be included with one or
other component or may be kept separate and combined with the
mixture of the two components when they are dispensed. The term
surfactant as used herein could include soap.
[0011] The surfactant system chosen for this system may comprise,
alone or in combination, any non-ionic, amphoteric, anionic, or
cationic surfactant.
[0012] It is a preferred feature of this invention that the
surfactant comprises any of the following either alone or in
combination:--alkyl polyglucoside (APG) (non-ionic) and
cocamidopropyl betaine (amphoteric). Any non-ionic or amphoteric
surfactants, alone or in combination, would be preferred, but alkyl
polyglucosides are noted for their exceptionally high foaming
performance. Other examples of amphoteric surfactants which could
be used include amphoacetates (e.g. cocoamphoacetate) and
amphopropionates (e.g. sodium cocoamphopropionate). Other examples
of non-ionic surfactants which could be used include fatty alcohol
ethoxylates (e.g. laureth-4), fatty acid alkanolamides (e.g.
cocamide DEA) and amine oxides (e.g. alkyl dimethyl amine oxide).
This list is not exhaustive and does not preclude the use of other
amphoteric and non-ionic surfactants nor does it preclude the use
of anionic and cationic surfactants.
[0013] The surfactant shall preferably constitute from 1% to 30% by
weight of the total composition and more preferably from 5% to 20%
by weight of the total composition.
[0014] That said the amount of surfactant is chosen having regard
to the intended purpose of the cleaning composition. Where the
composition is intended to be a shower gel it shall preferably
comprise from 2.5% to 30% by weight of at least one surfactant.
[0015] Where the composition is intended to be a shaving cream it
shall preferably comprise from 2.5% to 30% by weight of at least
one surfactant.
[0016] Where the composition is intended to be a fabric cleaner it
shall preferably comprise from 2.5% to 40% by weight of at least
one surfactant.
[0017] The composition of the invention may include other additives
which are usually included in cleaning compositions, for example
any of the following either alone or in combination:--colourants,
preservatives, anti-bacterial agents, skin conditioning agents,
thickeners, fragrance and the like. These additional ingredients
may be included with one or other component as may be found
appropriate.
[0018] The invention is not restricted to the specific embodiments
just described, nor is it restricted to facial cleaners or shower
gels. Compositions according to the invention may be used for other
cleaning uses including shaving creams, hand washes, fabric
cleaners and hard surface cleaners.
[0019] The invention is further illustrated by the following
examples.
EXAMPLES
Example 1
[0020] Two components of a light foaming facial cleanser were
formulated as follows:
[0021] Component A
1 INGREDIENTS % w/w Deinoised Water to 100% Citric Acid Monohydrate
7.0% Trisodium Citrate 16.5% Decyl Glucoside 2.5% Cocamidopropyl
Betaine 2.5% Preservative q.s. Colour q.s. Fragrance q.s.
[0022] Component B
2 INGREDIENTS % w/w Deionised Water to 100% Potassium Bicarbonate
20.0% Decyl Glucoside 2.5% Cocamidopropyl Betaine 2.5% Preservative
q.s. Colour q.s. Fragrance q.s.
Example 2
[0023] Two components of an instant lathering shower gel were
formulated as follows:
[0024] Component A
3 INGREDIENTS % w/w Deionised Water to 100% Citric Acid Monohydrate
7.0% Trisodium Citrate 16.0% Lauryl Glucoside 10.0% Cocamidopropyl
Betaine 10.0% Preservative q.s. Colour q.s. Fragrance q.s.
[0025] Component B
4 INGREDIENTS % w/w Deionised Water to 100% Potassium Bicarbonate
20.0% Lauryl Glucoside 10.0% Cocamidopropyl Betaine 10.0%
Preservative q.s. Colour q.s. Fragrance q.s.
Example 3
[0026] Component A
5 INGREDIENTS % w/w Deionised Water to 100% Cocamidopropyl Betaine
15.0% Citric Acid Monohydrate 7.0% Trisodium Citrate 16.8%
Solubiliser 1.00% Fragrance q.s. Colour q.s. Preservative q.s.
[0027] Component B
6 INGREDIENTS % w/w Deionised Water to 100% Decyl Glucoside 15.0%
Potassium Bicarbonate 15.0% Solubiliser 1.0% Preservative q.s.
Fragrance q.s. Colour q.s.
Example 4
[0028] Component A
7 INGREDIENTS % w/w Deionised Water to 100% Cocamidopropyl Betaine
15% Citric Acid Monohydrate 7.0% Trisodium Citrate 17.0%
Solubiliser 1.0% Preservative q.s. Fragrance q.s. Thickner q.s.
Colour q.s.
[0029] Component B
8 INGREDIENTS % w/w Deionised Water to 100% Decyl Glucoside 15%
Potassium Bicarbonate 15.00% Solubiliser 1.00% Preservative q.s.
Fragrance q.s. Thickener q.s. Colour q.s.
Example 5
[0030] Component A
9 INGREDIENTS % w/w Deionised Water to 100% Sodium Laureth Sulfate
10.0% Cocamidopropyl Betaine 2.5% Citric Acid Monohydrate 7.0%
Trisodium Citrate 17.0% Solubiliser 1.0% Preservative q.s.
Fragrance q.s Thickner q.s. Colour q.s.
[0031] Component B
10 INGREDIENTS % w/w Deionised Water to 100% Decyl Glucoside 15%
Potassium Bicarbonate 15.00% Solubiliser 1.00% Preservative q.s.
Fragrance q.s. Thickener q.s. Colour q.s.
[0032] The present invention will now be described further by way
of example only and with reference to the following drawings, in
which:
[0033] FIG. 1 is a diagrammatic side view of one type of a package
suitable for use with the cleaning composition described
herein;
[0034] FIG. 2 is a diagrammatic side view of a second type of
package suitable for use with the cleaning composition described
herein;
[0035] FIG. 3 is a diagrammatic side view of a third type of
package suitable for use with the cleaning composition described
herein.
[0036] In each example the components were charged into separate
compartments 12, 14, within a flexible container 10 illustrated in
FIG. 1. Each compartment has an outlet leading to a common nozzle
16 which can be closed by a cap not shown. When the container was
compressed the contents of both compartments were dispensed through
the nozzle. A reaction between the acid and the bicarbonate
immediately occurred releasing carbon dioxide gas which in turn
created neutral, dense, creamy foam.
[0037] The invention is not restricted to the specific embodiments
just described, nor is it restricted to facial cleaners or shower
gels. Compositions according to the invention may be used, for
example, for other cleaning uses including shaving creams, fabric
cleaners and hard surface cleaners.
[0038] Other types of package can be used with the composition of
the invention. For example as shown in FIG. 2 a container 20 having
two compartments 22, 24 has a pump action spray 26 mounted on the
top thereof with dip tubes 28, 30 extending into the compartments
of the container. This kind of package is known for use in
connection with a concentrated substance in one compartment and a
diluted in the other whereby the mixture that is dispensed is
diluted concentrate.
[0039] Another type of package that can be used with the
composition of the invention is shown in FIG. 3 and comprises a
container 32 having two compartments 34, 36. A cap 38 reciprocally
movable is indicated by arrows 40 which action pumps the contents
of the compartments into outlets 42, 44. The compartment outlets
merge together to form a common outlet 46. This type of package is
also known but for keeping two ingredients of a cosmetic separate
until they are dispensed for use in order to prevent one ingredient
which is an emulsion being broken by the other ingredient.
[0040] The examples and packages described herein are by way of
illustration only.
* * * * *