Patent ID: 6200581
Filing Date: 2001-03-13
Classification: A61K,A61Q,C08G,Y10S,Y10T

Abstract:
A composition comprising an elastomeric silicone terpolymer prepared by a method comprising combining and reacting:(A) an .tbd.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', and optionally an .tbd.Si--H containing polysiloxane of the formula HR.sub.2 SiO(R'.sub.2 SiO).sub.c SiR.sub.2 H or an .tbd.Si--H containing polysiloxane of 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.dbd.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.dbd.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.dbd.CH(CH.sub.2).sub.d CH.dbd.CH.sub.2, .alpha.,.omega.-diynes of the formula CH.tbd.C(CH.sub.2).sub.e C.tbd.CH, and .alpha.,.omega.-ene-ynes of the formula CH.sub.2.dbd.CH(CH.sub.2).sub.e C.tbd.CH, where d is 1-20 and e is 0-20; and(E) a platinum catalyst; in the presence of(F) an oil selected from the group consisting of (i) organic compounds, (ii) compounds containing a silicon atom, (iii) mixtures of organic compounds, (iv) mixtures of compounds containing a silicon atom, and (v) mixtures of organic compounds and compounds containing a silicon atom;and allowing the reaction to continue until there is formed a crosslinked three-dimensional gelled network of an elastomeric silicone terpolymer.