Patent ID: 6238657
Filing Date: 2001-05-29
Classification: A61K,A61Q,C08G,C08J,C08L

Abstract:
A composition comprising an oil-in-oil emulsion in which one oil phase of the oil-in-oil emulsion is a silicone oil, and the other oil phase of the oil-in-oil emulsion is an organic oil, the oil phases being mutually insoluble and being emulsified using as the emulsifier, an elastomeric silicone polymer having (i) dimethyl, (ii) C10 or higher alkyl, (iii) polyether, and (iv) crosslinking groups in its molecule; the elastomeric silicone polymer being prepared by combining and reacting:(A) an =Si--H containing polysiloxane of the formula R.sub.3 SiO(R'.sub.2 SiO).sub.a (R""HSiO).sub.b SiR.sub.3, or the formula (R'.sub.2 SiO).sub.a' (R""HSiO).sub.b', or the formula HR.sub.2 SiO(R'.sub.2 SiO).sub.c SiR.sub.2 H, or the formula HR.sub.2 SiO(R'.sub.2 SiO).sub.a (R""HSiO).sub.b SiR.sub.2 H, where R, R', and R"" are alkyl groups with 1-6 carbon atoms, a is 0-250, a' is 0-7, b is 1-250, b' is 3-10, and c is 0-250;(B) a mono-alkenyl polyether of the formula CH.sub.2 =CH(CH.sub.2).sub.f O(CH.sub.2 CH.sub.2 O).sub.g (CH.sub.2 CH.sub.3 CHO).sub.h T, or the formula CH.sub.2 =CH--Q--O(CH.sub.2 CH.sub.2 O).sub.g (CH.sub.2 CH.sub.3 CHO).sub.h T, where T is hydrogen, a C.sub.1 -C.sub.10 alkyl group, an aryl group, or a C.sub.1-C.sub.20 acyl group; Q is a divalent linking group containing unsaturation; f is 0-6, g is 4-100; and h is zero or 1-100;(C) an .alpha.-olefin containing at least ten carbon atoms;(D) an .alpha.,.omega.-unsaturated hydrocarbon selected from the group consisting of .alpha.,.omega.-dienes of the formula CH.sub.2 =CH(CH.sub.2).sub.d CH=CH.sub.2, .alpha.,.omega.-diynes of the formula CH=C(CH.sub.2).sub.e C=CH, and .alpha.,.omega.-ene-ynes of the formula CH.sub.2 =CH(CH.sub.2).sub.e C=CH, where d is 1-20 and e is 0-20; and(E) a platinum catalyst; in the presence of(F) a silicone oil;and allowing the reaction to continue until there is formed a crosslinked three-dimensional gelled network of an elastomeric silicone polymer.