Drug – bio-affecting and body treating compositions – Live hair or scalp treating compositions
Reexamination Certificate
1998-11-13
2002-06-11
Dees, Jose′ G. (Department: 1616)
Drug, bio-affecting and body treating compositions
Live hair or scalp treating compositions
C424S407000
Reexamination Certificate
active
06403073
ABSTRACT:
The present invention relates to novel compositions for treating keratin substances, in particular the hair, containing a combination of a polyampholytic polymer and a non-volatile, water-insoluble polyorganosiloxane, as well as to uses thereof.
Hair conditioners which provide additional cosmetic effects after application and rinsing, such as softness, flexibility, good disentangling, a sheen effect and/or a styling effect, have been sought in recent years in the field of shampoos and conditioners.
It is known in the prior art that silicones are cosmetic products which are particularly desired in hair formulations for their hair-conditioning properties, their softening and disentangling properties and for the sheen effect they provide. When they are used in rinse-out hair compositions, these ingredients have the drawback of being difficult to deposit on the hair and to do so in a non-uniform manner when applied and after rinsing, and of not being able to give the hair the desired effects intrinsic to silicones.
Patent application JP 7-15115 and U.S. Pat. No. 4,994,088 have envisaged shampoo compositions based on polyampholytic polymers. These are specific polyelectrolytic polymers which have equimolar amounts (or virtually equimolar amounts) of negative charges and positive charges. These polymers are generally insoluble in water and generally have the characteristic of being deposited on the hair by dilution and precipitation during the rinsing and fixing step and/or of maintaining the hair after the shampoo has been applied.
The Applicant has discovered that by combining these polyampholytic polymers with non-volatile, water-insoluble polyorganosiloxanes with a viscosity which will be defined later, it is possible, surprisingly to obtain silicone-based rinse-out hair compositions which do not have the drawbacks mentioned above, giving better cosmetic performance, in particular as regards the feel and the disentangling, as well as good styling properties.
Moreover, the Applicant has discovered, unexpectedly, that by combining the silicones of the invention with polyampholytes, the cosmetic performance of the polyampholyte is improved substantially.
The compositions according to the invention are essentially characterized in that they contain, in a cosmetically and/or dermatologically acceptable aqueous medium, at least:
(a) one non-volatile, water-insoluble polyorganosiloxane with a viscosity of greater than 3×10
−5
m
2
/s (300 centistokes);
(b) one polyampholytic polymer containing, in the chain or in a side position relative to the chain, equimolar amounts, or virtually equimolar amounts, of negative charges and positive charges; the said polyampholytic polymer being insoluble in water at a concentration of greater than or equal to 0.1% by weight and at 20° C. and the said polymer being other than betaine homopolymers or copolymers containing a monomer chosen from the group consisting of:
(i) the monomers of the following formula:
which:
R
9
, R
11
and R
12
, which may be identical or different, denote a hydrogen or an alkyl radical;
R
10
denotes a group —(CH
2
)
n
— or —(O—CH
2
—CH
2
)
m
—; F denotes NH or O; m and n are integers ranging from 1 to 4;
(ii) the monomer of the following formula:
(iii) the monomer of the following formula:
(iv) the monomer of the following formula:
The polyorganopolysiloxanes of the invention preferably have a viscosity of greater than 5×10
−5
m
2
/s (500 centistokes) and more particularly of greater than 10×10
−5
m
2
/s (1000 centistokes).
Among the polyorganosiloxanes of the invention with a viscosity of greater than 3×10
−3
m
2
/s mention may be made of:
(i) polyalkylsiloxanes;
(ii) polyarylsiloxanes;
(iii) polyalkylarylsiloxanes;
(iv) silicone gums;
(v) silicone resins;
(vi) polyorganosiloxanes containing in their general structure one or more organofunctional groups directly attached to the siloxane chain or attached via a hydrocarbon-based radical;
(vii) block copolymers having a polysiloxane-polyoxyalkylene linear block as repeating units;
(viii) grafted silicone polymers containing a non-silicone organic skeleton, consisting of an organic main chain formed from organic monomers not containing silicone, onto which is grafted, within the said chain as well as, optionally, on at least one of its ends, at least one polysiloxane macromonomer;
(ix) grafted silicone polymers containing a polysiloxane skeleton, grafted with non-silicone organic monomers, comprising a polysiloxane main chain onto which is grafted, within the said chain as well as, optionally, on at least one of its ends, at least one organic macromonomer not containing silicone;
(x) or mixtures thereof.
Among the polyalkylsiloxanes, mention may be made mainly of:
linear polydimethylsiloxanes containing trimethylsilyl end groups, such as, for example, and in a non-limiting manner, the Silbione oils of the 70047 series sold by Rhône-Poulenc; the oil 47 V 500 000 from Rhône-Poulenc or certain Viscasil oils from General Electric;
linear polydimethylsiloxanes containing hydroxydimethylsilyl end groups, such as the oils of the 48 V series from Rhône-Poulenc.
In this class of polyalkylsiloxanes, mention may also be made of the polyalkylsiloxanes sold by the company Goldschmidt under the trade names Abilwax 9800 and Abilwax 9801, which are poly(C
1
-C
20
)alkylsiloxanes.
Among the polyalkylarylsiloxanes, mention may be made of linear and branched polydimethylmethylphenylsiloxanes and polydimethyldiphenylsiloxanes, such as the product DC 556 Cosmetic Grade Fluid from Dow Corning.
The silicone gums in accordance with the invention are polyorganosiloxanes with a molecular mass of between 200,000 and 1,000,000, used alone or as a mixture in a solvent chosen from the group consisting of volatile silicones, polydimethylsiloxane oils, polyphenylmethylsiloxane oils, isoparaffins, methylene chloride, pentane, dodecane, tridecane and tetradecane, or mixtures thereof.
Mention is made, for example, of the following compounds:
polydimethylsiloxane,
poly[(dimethylsiloxane)/(methylvinylsiloxane)],
poly[(dimethylsiloxane)/(diphenylsiloxane)],
poly[(dimethylsiloxane)/(phenylmethylsiloxane)],
poly[(dimethylsiloxane)/(diphenylsiloxane)/(methylvinylsiloxane)].
Mention may be made, for example, of the following mixtures:
1) mixtures formed from a polydimethylsiloxane hydroxylated at the end of the chain (Dimethiconol according to the CTFA nomenclature) and from a cyclic polydimethylsiloxane (Cyclomethicone), such as the product Q2 1401 sold by the company Dow Corning;
2) mixtures formed from a polydimethylsiloxane gum with a cyclic silicone, such as the product SF 1214 Silicone Fluid from General Electric, which is an SE 30 gum of molecular weight 500,000 dissolved in SF 1202 Silicone Fluid (decamethylcyclopentasiloxane);
3) mixtures of two polydimethylsiloxanes (PDMS) of different viscosity, in particular a PDMS gum and a PDMS oil, such as the products SF 1236 and CF 1241 from General Electric. The product SF 1236 is a mixture of an SE 30 oil defined above, with a viscosity of 20 m
2
/s, and of an SF 96 oil with a viscosity of 5×10
−5
m
2
/s (15% SE 30 gum and 85% SF 96 oil). The product CF 1241 is a mixture of an SE 30 gum (33%) and of a PDMS (67%) with a viscosity of 10
−3
m
2
/s.
The silicone resins in accordance with the invention are preferably crosslinked siloxane systems containing the units:
R
2
SiO
2/2
, RSiO
3/2
and SiO
4/2
, in which R denotes a hydrocarbon-based group having 1 to 6 carbon atoms or a phenyl group. Among these products, the ones which are particularly preferred are those in which R denotes a lower alkyl radical or a phenyl radical.
Among these resins, mention may be made of the product sold under the name Dow Corning 593 by Dow Corning or those sold under the name Silicone Fluid SS 4267 by General Electric and which are dimethyl/trimethylpolysiloxanes.
The organomodified polyorganosiloxanes of the invention are polyorganosiloxanes as defined above, contai
Cauwet-Martin Daniele
Lion Bertrand
Mondet Jean
Dees Jose′ G.
Finnegan Henderson Farabow Garrett & Dunner L.L.P.
George Konata M
L'Oreal (S.A.)
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