US 5,626,857 A · Personal care compositions containing polyalkylsiloxane copolymers

Abstract

A personal care composition is provided, composing (A) an effective amount of a polyalkylsiloxane copolymer having a melting point of from about -40.degree. C. to about +40.degree. C., and being selected from various specific polyalkylsiloxane copolymer fluids or polyalkylsiloxane copolymer resins; and (B) a cosmetically acceptable carrier medium, wherein the polyalkylsiloxane copolymer contains mixtures of linear lower alkyl side chains and linear higher alkyl side chains or mixtures of linear alkyl side chains and branched alkyl side chains. The polyalkylsiloxane copolymers used in the composition are fluids or soft waxes at body temperature and have improved application and payout and better substantivity and hair conditioning properties.

A silicone composition comprising:

(A) a polyalkylsiloxane copolymer having a melting point of from about -40.degree. C. to about +40.degree. C. selected from the group consisting of:
(1) fluid 1, a polyalkylsiloxane copolymer fluid comprising:
(a) monofunctional units having the general formula R.sub.1 R.sub.b.sup.1 SiO.sub. 1/2,
(b) difunctional units having the general formula RR.sup.1 SiO.sub. 2/2, and
(c) difunctional units having the general formula RR.sup.2 SiO.sub. 2/2 ;
(2) fluid 2, a polyalkylsiloxane copolymer fluid comprising:
(a) monofunctional units having the general formula R.sub.a R.sub.b.sup.1 SiO.sub. 1/2,
(b) difunctional units having the general formula RR.sup.1 SiO.sub. 2/2, and
(c) difunctional units having the general formula RR.sup.3 SiO.sub. 2/2 ;
(3) fluid 1, a polyalkylsiloxane copolymer fluid comprising:
(a) monofunctional units having the general formula R.sub.a R.sub.b.sup.1 SiO.sub. 1/2,
(b) difunctional units having the general formula RR.sup.2 SiO.sub. 2/2, and
(c) difunctional units having the general formula RR.sup.3 SiO.sub. 2/2 ;
(4) fluid 4, a polyalkylsiloxane copolymer fluid comprising:
(a) monofunctional units having the general formula R.sub.a R.sub.b.sup.1 SiO.sub. 1/2,
(b) difunctional units having the general formula RR.sup.1 SiO.sub. 2/2, and
(c) difunctional units having the general formula RR.sup.2 SiO.sub. 2/2,
(d) d/functional units having the general formula RR.sup.3 SiO.sub. 2/2 ;
(5) resin 5, a polyalkylsiloxane copolymer resin comprising:
(a) monofunctional units having the general formula R.sub.c R.sub.d.sup.1 SiO.sub. 1/2,
(b) monofunctional units having the general formula R.sub.c R.sub.d.sup.2 SiO.sub. 1/2, and
(c) tetrafunctional units having the formula SiO.sub. 4/2 ;
(6) resin 6, a polyalkylsiloxane copolymer resin comprising:
(a) monofunctional units having the general formula R.sub.c R.sub.d.sup.1 SiO.sub. 1/2,
(b) monofunctional units having the general formula R.sub.c R.sub.d.sup.3 SiO.sub. 1/2, and
(c) tetrafunctional units having the formula SIO.sub. 4/2 ;
(7) resin 7, a polyalkylsiloxane copolymer resin comprising:
(a) monofunctional units having the general formula R.sub.c R.sub.d.sup.2 SiO.sub. 1/2,
(b) monofunctional units having the general formula R.sub.c R.sub.d.sup.3 SiO.sub. 1/2, and
(c) tetrafunctional units having the formula SiO.sub. 4/2 ;
and
(8) resin 8, a polyalkylsiloxane copolymer resin comprising:
(a) monofunctional units having the general formula R.sub.c R.sub.d.sup.1 SiO.sub. 1/2,
(b) monofunctional units having the general formula R.sub.c R.sub.d.sup.2 SiO.sub. 1/2,
(c) monofunctional units having the general formula R.sub.c R.sub.d.sup.3 SiO.sub. 1/2, and
(d) tetrafunctional units having the formula SiO.sub. 4/2 ;
wherein
"a" is a number from 0 to 3,
"b" is a number from 0 to 3,
"c" is a number from 0 to 2,
"d" is a number from 1 to 3,
"c"+"d" is equal to 3;
and
wherein
each R is independently an alkyl radical having from 1 to about 4 carbon atoms, a phenyl radical, or a phenethyl radical;
each R.sup.1 is independently a linear alkyl radical having from about 15 to 36 carbon atoms;
each R.sup.2 is independently a linear alkyl radical having from about 6 to about 14 carbon atoms;
each R.sup.3 is independently a branched alkyl radical having from about 5 to about 36 carbon atoms;
wherein the weighted average of R.sup.1, R.sup.2, and R.sup.3 in the copolymer is sufficient to provide an average of from about 14 to 30 carbon atoms in the sum of R.sup.1 +R.sup.2 +R.sup.3 ;
and
(B) a cosmetically acceptable carrier medium.

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Personal care compositions containing polyalkylsiloxane copolymers

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Personal care compositions containing polyalkylsiloxane copolymers

Life of this patent

Abstract

Claims9