U.S. patent application number 10/051040 was filed with the patent office on 2002-08-01 for stable topical composition comprising a solid elastomeric organopolysiloxane and spherical particles.
This patent application is currently assigned to L'OREAL. Invention is credited to Contamin, Jean-Claude, Rouquet, Violaine.
Application Number | 20020102284 10/051040 |
Document ID | / |
Family ID | 9511688 |
Filed Date | 2002-08-01 |
United States Patent
Application |
20020102284 |
Kind Code |
A1 |
Rouquet, Violaine ; et
al. |
August 1, 2002 |
Stable topical composition comprising a solid elastomeric
organopolysiloxane and spherical particles
Abstract
A stable topical composition, which can be used in the cosmetic
or dermatological fields, comprising at least one liquid fatty
phase in combination with a solid phase representing at least 10%
of the total weight of the fatty phase and further comprising a
partially or completely crosslinked elastomeric organopolysiloxane
and spherical polymeric particles with a particle diameter of less
than 10 .mu.m.
Inventors: |
Rouquet, Violaine; (Eze,
FR) ; Contamin, Jean-Claude; (Cantaron, FR) |
Correspondence
Address: |
OBLON SPIVAK MCCLELLAND MAIER & NEUSTADT PC
FOURTH FLOOR
1755 JEFFERSON DAVIS HIGHWAY
ARLINGTON
VA
22202
US
|
Assignee: |
L'OREAL
Paris
FR
|
Family ID: |
9511688 |
Appl. No.: |
10/051040 |
Filed: |
January 22, 2002 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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10051040 |
Jan 22, 2002 |
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09860460 |
May 21, 2001 |
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09860460 |
May 21, 2001 |
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09163407 |
Sep 30, 1998 |
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Current U.S.
Class: |
424/401 ;
424/70.12 |
Current CPC
Class: |
A61K 8/895 20130101;
A61K 8/92 20130101; A61K 8/025 20130101; Y10S 514/845 20130101;
A61K 8/8152 20130101; A61Q 1/02 20130101; A61K 2800/412 20130101;
Y10S 514/846 20130101; A61K 8/585 20130101; A61K 8/891 20130101;
A61K 8/89 20130101; A61Q 17/04 20130101; A61K 8/731 20130101; A61K
8/922 20130101; A61Q 19/00 20130101 |
Class at
Publication: |
424/401 ;
424/70.12 |
International
Class: |
A61K 007/06; A61K
007/11 |
Foreign Application Data
Date |
Code |
Application Number |
Oct 1, 1997 |
FR |
97 12223 |
Claims
We claim:
1. A composition comprising: (a) at least one liquid fatty phase
associated with a solid phase comprising particles of at least one
partially or completely crosslinked elastomeric organopolysiloxane,
wherein said particles in the solid phase represent at least 10% of
the total weight of the fatty phase and; (b) spherical organic
particles with a particle diameter of less than 10 .mu.m.
2. A composition formed from: (a) at least one liquid fatty phase
associated with a solid phase comprising particles of at least one
partially or completely crosslinked elastomeric organopolysiloxane,
wherein said particles in the solid phase represent at least 10% of
the total weight of the fatty phase and; (b) spherical organic
particles with a particle diameter of less than 10 .mu.m.
3. A composition according to claim 1, wherein the
organopolysiloxane is obtained by addition and crosslinking
reaction, in the presence of a platinum type catalyst of: (a) at
least one organopolysiloxane having at least two lower alkenyl
groups per molecule; and (b) at least one organopolysiloxane having
at least two hydrogen atoms bonded to a silicon atom per
molecule.
4. A composition according to claim 1, wherein the
organopolysiloxane is chosen from: i) organopolysiloxanes
comprising R.sub.2SiO and RSiO.sub.0.5 units and optionally
R.sub.3SiO.sub.0.5 and/or SiO.sub.2 units in which the R radicals,
independently of one another, denote a hydrogen, an alkyl, an aryl,
or an unsaturated aliphatic group, and where the ratio by weight of
the R.sub.2SiO units to the RSiO.sub.1.5 units varies from 1:1 to
30:1; and ii) organopolysiloxanes which are insoluble and which can
be swollen in a silicone oil, obtained by addition of an
organohydropolysiloxane (1) and of an organopolysiloxane (2) having
unsaturated aliphatic groups, so that the amount of hydrogen or of
unsaturated aliphatic groups in (1) and (2) respectively ranges
from 1 to 20 mol % when the organopolysiloxane is non-cyclic and
from 1 to 50 mol % when the organopolysiloxane is cyclic.
5. A composition according to claim 1, wherein the spherical
organic particles have a particle diameter of less than 5
.mu.m.
6. A composition according to claim 1, wherein the spherical
orgainic particles are chosen from microbeads of
methylsilsesquioxane resins, microbeads of poly(methyl
methacrylate)s, spherical particles of crosslinked
polydimethylsiloxanes, spherical particles of polyamide,
polystyrene microspheres and mixtures thereof.
7. A composition according to claim 1, wherein the spherical
orgainic particles are chosen from polymeric organic particles.
8. A composition according to claim 1, wherein the particles in the
solid phase represent at least 20% of the total weight of the fatty
phase.
9. A composition according to claim 1, wherein the ratio by weight
of the organic spherical particles to the elastomeric
organopolysiloxane particles ranges from 0.25:1 to 1:1.
10. A composition according to claim 9, wherein the ratio by weight
of the spherical organic particles to the elastomeric
organopolysiloxane particles ranges from 0.4:1 to 0.7:1.
11. A composition according to claim 1, wherein the liquid fatty
phase comprises at least one oil chosen from silicone oils and
hydrocarbon-comprising oils.
12. A composition according to claim 1, wherein the liquid fatty
phase comprises at least one oil chosen from hydrocarbon-comprising
oils of animal, plant, mineral and synthetic origin, fatty alcohols
and polymethylsiloxanes.
13. A composition according to claim 1, wherein the composition
additionally comprises a solid or semi-solid fatty phase.
14. A composition according to claim 1, wherein the composition is
in the form of an anhydrous gel or of a water-in-oil or
oil-in-water emulsion.
15. A composition according to claim 1, wherein the composition
comprises a continuous fatty phase.
16. A composition according to claim 1, wherein said composition is
a cosmetic or dermatological composition.
17. A composition according to claim 1, wherein said composition is
a composition for caring for, treating, making up or removing
make-up from the skin, mucous membranes or keratinous fibres.
18. A composition according to claim 1, wherein said composition
additionally comprises at least one ingredient chosen from
sunscreening agents, essential oils, vitamins, antiseborrhoeic
agents, marine extracts, emollients, antioxidants, hydrophilic
thickeners, lipophilic thickeners, preservatives, fragrances, and
colouring materials.
19. A composition according to claim 1, wherein said composition is
a care or make-up base for the skin or the lips.
20. A method for softening blemishes of the contours of the skin
comprising the step of applying to said blemishes an effective
amount of a composition according to claim 1.
21. A method for rendering the skin matt comprising the step of
applying to said skin an effective amount of a composition
according to claim 1.
22. A method for extending the hold over time of a cosmetic or
dermatological composition comprising the step of including in said
composition an effective amount of a composition according to claim
1.
23. A method for stabilizing a composition comprising at least one
liquid fatty phase and further comprising spherical organic
particles with a particle diameter of less than 10 .mu.m,
comprising the step of associating with said at least one liquid
fatty phase a solid phase containing particles of at least one
partially or completely crosslinked elastomeric organopolysiloxane,
said particles representing at least 10% of the total weight of the
fatty phase.
24. A method for stabilizing a composition formed from at least one
liquid fatty phase and from spherical organic particles with a
particle diameter of less than 10 .mu.m, comprising the step of
further forming said composition by associating with said at least
one liquid fatty phase a solid phase containing particles of at
least one partially or completely crosslinked elastomeric
organopolysiloxane, said particles representing at least 10% of the
total weight of the fatty phase.
25. A method for rendering homogeneous a composition comprising at
least one liquid fatty phase and further comprising spherical
organic particles with a particle diameter of less than 10 .mu.m,
comprising the step of associating with said at least one liquid
fatty phase a solid phase containing particles of at least one
partially or completely crosslinked elastomeric organopolysiloxane,
said particles representing at least 10% of the total weight of the
fatty phase.
26. A method for rendering homogeneous a composition formed from at
least one liquid fatty phase and from spherical organic particles
with a particle diameter of less than 10 .mu.m, comprising the step
of further forming said composition by associating with said at
least one liquid fatty phase a solid phase containing particles of
at least one partially or completely crosslinked elastomeric
organopolysiloxane, said particles representing at least 10% of the
total weight of the fatty phase.
27. A method according to claim 23, wherein the organopolysiloxane
is obtained by addition and crosslinking reaction, in the presence
of a platinum type catalyst of: (a) at least one organopolysiloxane
having at least two lower alkenyl groups per molecule; and (b) at
least one organopolysiloxane having at least two hydrogen atoms
bonded to a silicon atom per molecule.
28. A method according to claim 25, wherein the organopolysiloxane
is obtained by addition and crosslinking reaction, in the presence
of a platinum type catalyst of: (a) at least one organopolysiloxane
having at least two lower alkenyl groups per molecule; and (b) at
least one organopolysiloxane having at least two hydrogen atoms
bonded to a silicon atom per molecule.
29. A method according to claim 23, wherein the organopolysiloxane
is chosen from: i) organopolysiloxanes comprising R.sub.2SiO and
RSiO.sub.1.5 units and optionally R.sub.3SiO.sub.0.5 and/or
SiO.sub.2 units in which the R radicals, independently of one
another, denote a hydrogen, an alkyl, an aryl, or an unsaturated
aliphatic group, and where the ratio by weight of the R.sub.2SiO
units to the RSiO.sub.1.5 units varies from 1/1 to 30/1; ii)
organopolysiloxanes which are insoluble and which can be swollen in
a silicone oil, obtained by addition of an organohydropolysiloxane
(1) and of an organopolysiloxane (2) having unsaturated aliphatic
groups, so that the amount of hydrogen or of unsaturated aliphatic
groups in (1) and (2) respectively ranges from 1 to 20 mol % when
the organopolysiloxane is non-cyclic and from 1 to 50 mol % when
the organopolysiloxane is cyclic.
30. A method according to claim 29, wherein said alkyl R radical is
chosen from methyl, ethyl and propyl, wherein said aryl radical is
chosen from phenyl and tolyl, and wherein said unsaturated alkyl
group radical is chosen from vinyl.
31. A method according to claim 25, wherein the organopolysiloxane
is chosen from: i) organopolysiloxanes comprising R.sub.2SiO and
RSiO.sub.1.5 units and optionally R.sub.3SiO.sub.0.5 and/or
SiO.sub.2 units in which the R radicals, independently of one
another, denote a hydrogen, an alkyl, an aryl, or an unsaturated
aliphatic group, and where the ratio by weight of the R.sub.2SiO
units to the RSiO.sub.1.5 units varies from 1/1 to 30/1; ii)
organopolysiloxanes which are insoluble and which can be swollen in
a silicone oil, obtained by addition of an organohydropolysiloxane
(1) and of an organopolysiloxane (2) having unsaturated aliphatic
groups, so that the amount of hydrogen or of unsaturated aliphatic
groups in (1) and (2) respectively ranges from 1 to 20 mol % when
the organopolysiloxane is non-cyclic and from 1 to 50 mol % when
the organopolysiloxane is cyclic.
32. A method according to claim 31, wherein said alkyl R radical is
chosen from methyl, ethyl and propyl, wherein said aryl radical is
chosen from phenyl and tolyl, and wherein said unsaturated alkyl
group radical is chosen from vinyl.
33. A method according to claim 23, wherein the ratio by weight of
the spherical organic particles to the elastomeric
organopolysiloxane is chosen within the range from 0.25:1 to
1:1.
34. A method according to claim 25, wherein the ratio by weight of
the spherical organic particles to the elastomeric
organopolysiloxane is chosen within the range from 0.25:1 to
1:1.
35. A method according to claim 23, wherein the ratio by weight of
the spherical organic particles to the elastomeric
organopolysiloxane is chosen within the range from 0.4:1 to
0.7:1.
36. A method according to claim 25, wherein the ratio by weight of
the spherical organic particles to the elastomeric
organopolysiloxane is chosen within the range from 0.4:1 to
0.7:1.
37. A method according to claim 23, wherein the liquid fatty phase
comprises at least one oil selected from silicone oils and
hydrocarbon-comprising oils.
38. A method according to claim 25, wherein the liquid fatty phase
comprises at least one oil selected from silicone oils and
hydrocarbon-comprising oils.
39. A method according to claim 23, wherein the composition is a
care or make-up base for the skin or lips.
40. A method according to claim 25, wherein the composition is a
care or make-up base for the skin or lips.
41. A method according to claim 20, wherein the particles in the
solid phase represent at least 20% of the total weight of the fatty
phase.
42. A method according to claim 21, wherein the particles in the
solid phase represent at least 20% of the total weight of the fatty
phase.
43. A method according to claim 23, wherein the particles in the
solid phase represent at least 20% of the total weight of the fatty
phase.
44. A method according to claim 25, wherein the particles in the
solid phase represent at least 20% of the total weight of the fatty
phase.
Description
[0001] The invention relates to a stable topical composition
comprising a liquid fatty phase in combination with a partially or
completely crosslinked elastomeric organopolysiloxane. This
composition is more especially intended for the cosmetic or
dermatological field. It can constitute in particular a composition
for caring for, treating, making up or removing make-up from the
skin of the face or of the body, keratinous fibres (hair,
eyelashes, eyebrows) and mucous membranes, such as the lips and the
inner surfaces of the eyelids, of human beings.
[0002] It is known to use, in cosmetic or dermatological
compositions, spherical particles, such as silica particles, for
the purpose of conferring a degree of consistency on these
compositions. Reference may in particular be made to the document
by Shiseido EP-A-765,656. In these compositions, the higher the
amount of particles, the thicker the composition. In addition,
these particles have the property of absorbing fatty substances,
and conferring a non-greasy appearance on these compositions, even
in the presence of a large amount of fatty substances. This type of
composition is much appreciated by consumers, in particular those
with a skin with a greasy tendency. Unfortunately, the higher the
amount of silica particles, the greater the instability of the
composition. In addition, these particles confer a very rough and
dry feel on the composition, thus limiting the use of this type of
composition.
[0003] The inventors have developed a stable composition with a
high level of spherical particles which does not exhibit the above
disadvantages, while retaining the non-greasy property.
[0004] More specifically, the invention relates to a composition
comprising at least one liquid fatty phase associated with a solid
phase comprising particles of at least one partially or completely
crosslinked elastomeric organopolysiloxane, wherein the particles
in the solid phase represent at least 10% of the total weight of
the fatty phase and, in addition, the composition comprises
spherical organic particles with a particle-diameter of less than
10.mu.m.
[0005] Another subject-matter of the invention is the use, in a
composition comprising at least one liquid fatty phase associated
with a solid phase containing particles, and further comprising
spherical organic particles with a particle diameter of less than
10 .mu.m, the particles in the solid phase representing at least
10% of the total weight of the fatty phase, of particles of one or
more partially or completely crosslinked elastomeric
organopolysiloxanes, in order to stabilize and/or to render
homogeneous the said composition.
[0006] A further subject-matter of the invention is a process for
the stabilization and/or homogenization of a composition comprising
at least one liquid fatty phase associated with a solid phase
containing particles, the particles in the solid phase representing
at least 10% of the total weight of the fatty phase and further
comprising spherical particles with a particle diameter of less
than 10 .mu.m, which process comprises using particles of at least
one partially or completely crosslinked elastomeric
organopolysiloxane in the solid phase.
[0007] By virtue of the presence of one or more solid elastomeric
organopolysiloxanes, it is possible to obtain stable compositions
comprising a high amount of spherical organic particles which can
represent up to 40% by weight (as active material) of the total
fatty phase.
[0008] "Stable composition" should be understood as meaning
maintenance of the homogeneous appearance of the composition,
without demixing, precipitation or flocculation of the particles,
for at least 2 months at 45.degree. C.
[0009] "Elastomeric" is understood to mean a flexible and
deformable material having viscoelastic properties and exhibiting
in particular the consistency of a sponge or of a flexible
sphere.
[0010] "Liquid fatty phase" should be understood as meaning a fatty
phase which is liquid at room temperature, often known as oily
phase.
[0011] According to the invention, it is additionally possible to
combine, with the liquid fatty phase, a fatty phase which is solid
or semi-solid at room temperature, for the purpose of modifying the
rheology of the composition.
[0012] Although the invention applies to any technical field, it is
intended more especially for the cosmetic and dermatological
fields. The composition of the invention is well suited to topical
application.
[0013] The elastomeric organopolysiloxanes of the composition
according to the invention exhibit a notable oil-gelling power.
They are not desiccating to the skin and contribute good cosmetic
properties. These novel elastomers result in compositions which are
comfortable on application, soft and nonsticky to the touch. This
softness is due in particular to the texture of the
organopolysiloxanes.
[0014] The combination of the invention also makes it possible to
obtain care or make-up products intended in particular for
softening blemishes of the contours of the skin, while contributing
a natural appearance to it.
[0015] Preferably, the spherical organic particles have a particle
diameter of less than 5 .mu.m. Particle diameter should be
understood as meaning the diameter of the unit particles. This is
because the spherical particles may have a tendency to agglomerate,
resulting in aggregates which can have particle diameters of
greater than 5 .mu.m, or even greater than 10 .mu.m.
[0016] In particular, representative spherical organic particles to
which the invention applies are polymeric particles chosen from
microbeads of methylsilsesquioxane resins, such as, for example,
those sold by Toshiba Silicone under the name Tospearl 145A,
microbeads of poly(methyl methacrylate)s, such as in particular
those sold by Seppic under the name Micropearl M 100, spherical
particles of crosslinked polydimethylsiloxanes, such as in
particular those sold by Dow Corning Toray Silicone under the name
Trefil E 506 C or Trefil E-505C, spherical particles of polyamide
and more especially of Nylon 12, such as in particular those sold
by Atochem under the name Orgasol 2002 D Nat C05, polystyrene
microspheres, such as, for example, those sold by Dyno Particles
under the name Dynospheres, and their mixtures.
[0017] The "Trefils" are in particular spherical particles of
crosslinked polymers disclosed in Application EP-A-0,295,886 of
Toray Silicone Company. According to this application, they are
obtained by addition and crosslinking reaction, in the presence of
a catalyst of the platinum type, of at least:
[0018] (a) one organopolysiloxane having at least two lower alkenyl
groups per molecule; and
[0019] (b) one organopolysiloxane having at least two hydrogen
atoms bonded to a silicon atom per molecule.
[0020] The elastomeric organopolysiloxanes of the composition of
the invention exhibit a three-dimensional structure. Depending on
the level of the liquid fatty phase used in combination with these
organopolysiloxanes, the latter are converted from a product with a
spongy appearance, when they are used in the presence of low
contents of fatty phase, to a more or less homogeneous gel, in the
presence of larger amounts of fatty phase. The gelling of the
liquid fatty phase by these elastomers can be complete or
partial.
[0021] The elastomers of the composition of the invention are
generally carried in the form of a gel composed of an elastomeric
organopolysiloxane with a three-dimensional structure included in
at least one hydrocarbon-comprising oil and/or one silicone
oil.
[0022] The elastomeric organopolysiloxanes of the composition
according to the invention can also be chosen from those disclosed
in U.S. Pat. No. 5,266,321 of Kobayashi Kose, the disclosure of
which is specifically incorporated by reference herein. According
to this patent, they are chosen in particular from:
[0023] i) organopolysiloxanes comprising R.sub.2SiO and
RSiO.sub.1.5 units and optionally R.sub.3SiO.sub.0.5 and/or
SiO.sub.2 units in which the R radicals, independently of one
another, represent a hydrogen, an alkyl, such as methyl, ethyl or
propyl, an aryl, such as phenyl or tolyl, or an unsaturated
aliphatic group, such as vinyl, the ratio by weight of the
R.sub.2SiO units to the RSiO.sub.0.5 units ranging from 1/1 to
30/1;
[0024] ii) organopolysiloxanes which are insoluble and which can be
swollen in a silicone oil, obtained by addition of an
organohydropolysiloxane (1) and of an organopolysiloxane (2) having
unsaturated aliphatic groups, so that the amount of hydrogen or of
unsaturated aliphatic groups in (1) and (2) respectively is between
1 and 20 mol % when the organopolysiloxane is non-cyclic and
between 1 and 50 mol % when the organopolysiloxane is cyclic.
[0025] The organopolysiloxanes which are the subject-matter of the
invention are, for example, those sold under the names KSG6 of
Shin-Etsu or Gransil of Grant Industries (SR-CYC, SR DMF10,
SR-DC556) or those sold in the form of already constituted gels
(KSG15, KSG17, KSG16, KSG18 of Shin-Etsu, Gransil SR 5CYC gel,
Gransil SR DMF 10 gel, Gransil SR DC 556 gel, SF 1204 and JK 113-of
General Electric. Use may also be made of a mixture of these
commercial products.
[0026] The combined elastomeric organopolysiloxane particles and
spherical particles represent at least 10% (as active material) of
the total weight of the (liquid +solid) fatty phase and better
still at least 20% (as active material). This combination can, in
addition, represent up to 40% (as active material) of the total
weight of the fatty phase.
[0027] The stability and the homogeneity of the composition depend
on the amount of spherical particles and increase with the amount
of elastomeric organopolysiloxane. By way of indication, the ratio
by weight of the spherical particles to the elastomeric
organopolysiloxane particles (as active material) is chosen within
the range from 0.25:1 to 1 and better still from 0.4 to 0.7. The
amount of spherical particles (as active material) preferably
varies from 2% to 20% of the total weight of the composition and
the amount of elastomeric organopolysiloxane particles (as active
material) preferably varies from 2% to 20% of the total weight of
the composition.
[0028] The composition advantageously comprises a continuous fatty
phase. By virtue of the specific particles present in the
composition, this type of composition is neither greasy to the
touch and on application, nor oily. In addition, this composition
has great softness. Thus, the composition of the invention can
advantageously be an anhydrous gel or a water-in-oil (W/O)
emulsion. However, it can be provided in the form of an
oil-in-water emulsion. In addition, it is provided in the form of a
cream.
[0029] Depending on the amount of particles used, it is possible to
obtain compositions which are more or less viscous, stable and
homogeneous over time. In particular, the composition can have a
dynamic viscosity, measured at room temperature with a device of
the Rheomat RM 180 (Mettler) type, ranging from 2 to 20
Pa.multidot.s.
[0030] The composition of the invention advantageously constitutes
a care or make-up base to be applied to the skin or the lips before
the care or make-up product. In particular, it makes it possible to
extend the hold over time of the care or make-up composition, which
is particularly advantageous for foundation products, products for
concealing rings under the eyes, lip glosses and sun protection
products. It can also be used as a composition for rendering the
skin matt which is suited to greasy skin.
[0031] The oily fatty phase used in combination with the
elastomeric organopolysiloxanes of the invention can comprise
hydrocarbon-comprising oils and/or silicone oils.
[0032] Mention may in particular be made, as hydrocarbon-comprising
oils which can be used in the invention, of:
[0033] hydrocarbon-comprising oils of animal origin, such as
perhydrosqualene;
[0034] hydrocarbon-comprising oils of plant origin, such as liquid
triglycerides of fatty acids containing 4 to 10 carbon atoms, such
as triglycerides of heptanoic or octanoic acids, or alternatively
sunflower, maize, soybean, hazelnut, apricot, macadamia, castor or
avocado oils, triglycerides of caprylic/capric acids, such as those
sold by the company Starineries Dubois or those sold under the
names Miglyol 810, 812 and 818 by the company Dynamit Nobel, jojoba
oil or karite butter;
[0035] linear or branched hydrocarbons of mineral or synthetic
origin, such as liquid paraffins and their derivatives,
hydrogenated isoparaffins, which may or may not be volatile,
petrolatum, polydecenes, purcellin oil or hydrogenated
polyisobutene, such as parleam;
[0036] synthetic esters and ethers, such as oils of formula
R,COOR.sub.2 in which R.sub.1 represents the residue of a higher
fatty acid comprising from 6 to 29 carbon atoms and R.sub.2
represents a hydrocarbon-comprising chain comprising from 3 to 30
carbon atoms, such as purcellin oil, isopropyl myristate,
2-ethylhexyl palmitate, 2-octyidodecyl stearate, isostearyl
isostearate, arachidyl propionate or 2-octyldodecyl benzoate;
hydroxylated esters, such as isostearyl lactate, octyl
hydroxystearate, octyldodecyl hydroxystearate, diisostearyl malate
or triisocetyl citrate; or polyol esters, such as propylene glycol
dioctanoate, neopentyl glycol diheptanoate, diethylene glycol
diisononanoate and pentaerythritol esters;
[0037] fatty alcohols having from 12 to 26 carbon atoms, such as
octyidodecanol, 2-butyloctanol, 2-hexyldecanol,
2-undecylpentadecanol, oleyl alcohol or cetyl alcohol;
[0038] their mixtures.
[0039] The silicone oils which can be used in the invention are in
particular polymethylsiloxanes with a linear or cyclic structure
which are liquid or pasty at room temperature, such as
polydimethylsiloxanes, such as hexamethyldisiloxane,
octamethylcyclopentasiloxane or decamethylcyclopentasiloxane,
phenyl dimethicones, phenyl trimethicones and
polymethylphenylsiloxanes, or their mixtures.
[0040] The solid or semi-solid fatty phase optionally present in
the composition comprises in particular waxes and/or gums. The
waxes and the gums which can be used in the invention are in
particular microcrystalline waxes and silicone gums.
[0041] The total fatty phase can represent from 5 to 90% of the
total weight of the finished product and better still from 10 to
80%.
[0042] The composition of the invention advantageously comprises
colouring materials and in particular a particulate phase generally
present in a proportion of 0.05 (or even 0%) to 35% of the total
weight of the composition, preferably of 2 to 25%, and which can
comprise pigments and/or pearlescent agents commonly used in
cosmetic products. This phase can result in a coloured, white or
colourless product. Mention may be made, as pigment which can be
used in the composition of the invention, of titanium, zirconium or
cerium oxides, as well as zinc, iron or chromium oxides, ferric
blue, carbon black and barium, strontium, calcium or aluminium
lakes.
[0043] The composition according to the invention can comprise, in
addition, the ingredients commonly used in cosmetics, chosen as a
function of the activity or of the cosmetic effect desired for the
final product, such as coverage, transparency, mattness and/or
satin appearance. Mention may be made, without implied limitation,
of:
[0044] lipophilic or hydrophilic thickeners, such as modified clays
known under the names of bentone; aluminium fatty salts;
carboxymethylcellulose; or polyacrylamides;
[0045] vitamins, such as tocopherols and their derivatives,
including the acetate, vitamin A and its derivatives, or vitamin C
and its derivatives, such as the fatty esters, including the
palmitate;
[0046] a sunscreening agents, such as octyl methoxycinnamate
(Parsol MCX), 3-benzophenone (Uvinul M40) or
butylmethoxydibenzoylmethane (Parsol 1789);
[0047] lecithin, fragrances, essential oils, ceramides,
preservatives or antioxidants;
[0048] moisturizing agents, such as propylene glycol, glycerol or
even ethanol;
[0049] agents which act on greasy skin and/or antiseborrhoeic
agents, such as copper and/or zinc salts.
[0050] The composition can also comprise a surfactant, for example
a conventional anionic or non-ionic surfactant. The surfactant is
preferably present in a proportion of 0.3 (or even 0%, in an
anhydrous composition) to 8% of the total weight of the
composition. Mention may be made, as surfactant which can be used
in the composition of the invention, of polysorbate 40, glycerol
monostearate or dimethicone copolyols with an oxypropylenated
and/or oxyethylenated chain.
[0051] The processes for manufacturing the compositions according
to the invention do not differ in any way from the processes
conventionally used in cosmetics and are fully known to a person
skilled in the art.
[0052] In the examples below, the amount of the ingredients is
given as percentage by weight.
EXAMPLE 1
Anhydrous Anti-Sun Care
[0053]
1 Phase 1a: Tospearl 145 A 6 Phase 2a: Gransil SR 5 CYC (containing
25% of crosslinked 40.0 siloxane) Liquid fatty phase:
Cyclomethicone 44.0 Octyl methoxycinnamate 5.0 Plant
perhydrosqualene 5.0 Fragrance q.s.
[0054] This composition is obtained by dispersing the phase 1a in
the liquid phase at room temperature and with stirring and by then
adding the phase 2a, still while stirring. This composition has the
appearance of a translucent, non-greasy and soft gel. It is stable
for 2 months at 45.degree. C.
EXAMPLE 2
W/O Foundation
[0055]
2 Phase 1b: Micropearl M 100 5 Phase 2b: KSG 16 (containing 24% of
crosslinked siloxane) 25.0 Liquid fatty phase: Dimethicone copolyol
0.5 Cyclomethicone 4.5 Octyl methoxycinnamate 2.0 Liquid PDMS 30.0
Hydrogenated isoparaffin 5.0 Fragrance q.s. Colouring phase:
TiO.sub.2 4.0 Iron oxides 0.8 Aqueous phase: Glycerol 10.0
Demineralized water 15.0 Preservatives q.s.
[0056] This composition is obtained by successively dispersing the
colouring phase, the phase 1b and then the phase 2b in the liquid
phase at room temperature and with stirring. The aqueous phase is
subsequently emulsified in the fafty phase in a turbo mixer at room
temperature. This composition has the appearance of a tinted,
non-greasy and soft cream. It is stable for 2 months at 45.degree.
C.
EXAMPLE 3
W/O Care Cream
[0057]
3 Phase 1c: Trefil E 506C (100% active material) 2 Phase 2c:
Gransil SR 5 CYC (containing 25% of crosslinked siloxane) 8.0
Liquid fatty phase: Polysorbate 40 2.0 Glycerol monostearate 2.0
Cetyl alcohol 1.0 Cyclomethicone 2.0 Dimethicone 2.0 Avocado oil
2.0 Soybean oil 3.0 Antioxidant (vitamin E) 0.1 Aqueous phase:
Glycerol 5.0 Polyacrylamide (hydrophilic gelling agent) 0.7
Carboxymethylcellulose 0.5 Demineralized water q.s. for 100
[0058] Preservative and fragrance q.s.
[0059] The starting point is the emulsification of the aqueous
phase in the fatty phase in a turbo mixer at 65.degree. C. The
phase 1c and then the phase 2c are successively added to the
emulsion in a turbo mixer at 50.degree. C. with stirring. The
mixture is allowed to cool. This composition has the appearance of
a white, non-greasy and soft cream. It is stable for 2 months at
45.degree. C.
EXAMPLE 4
Test of Use of a Make-up Base
[0060] This composition is identical to the foundation of Example
2, without the colouring phase.
[0061] People in the test: 80 women, who are users of
foundation
4 Duration of the test: 1 week
[0062] The make-up base is applied before the foundation and a
comparison is made with and without make-up base.
[0063] The results are as follows:
5 Without Base With Base (complete (complete agreement) agreement)
The skin is matt 76% 94% The skin is soft 49% 88% The skin is
smooth 40% 80% The make-up holds all day 74% 95%
[0064] From this test, it clearly emerges that the composition of
the invention confers, on the make-up, improved properties of hold
over time, of comfort and of softness.
* * * * *