Foamable silicone rubber composition

Details Foamable silicone rubber composition Foamable silicone rubber composition

1996-12-24

1997-09-16

Foelak, Morton

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

Cellular products or processes of preparing a cellular...

521143, 521145, 521149, 521150, 521154, C08J 900

Patent

active

056681909

ABSTRACT:
A silicone sponge rubber having a great tensile strength even when it has a low foam density can be obtained from a foamable silicone rubber composition including:
(A) a polyolefin dispersion obtained by polymerizing monomers having polymerizable aliphatic unsaturated double bonds, dispersed in a dispersion medium of an organopolysiloxane having a viscosity of from 50 cSt to 1,000,000 cSt at 25.degree. C. whose molecular chain both terminals are terminated with silanol groups, to form a polyolefin in the silanol group-containing organopolysiloxane;
(B) an organohydrogenpolysiloxane having at least two hydrogen atoms in one molecule;
(C) at least one selected from the group consisting of water, an alcohol, a silanol group-containing organosilane, and a silanol group-containing siloxane having a viscosity of less than 50 cSt at 25.degree. C.; and
(D) a platinum family metal catalyst.

REFERENCES:
patent: 4987155 (1991-01-01), Inoue et al.
patent: 5135960 (1992-08-01), Higuchi et al.

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