Foaming organopolysiloxane composition and cured product thereof

Details Foaming organopolysiloxane composition and cured product thereof Foaming organopolysiloxane composition and cured product thereof

1990-03-15

1990-11-20

Foelak, Morton

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

Synthetic resins

Cellular products or processes of preparing a cellular...

521122, 521123, 521154, 521913, 521134, C08V 902

Patent

active

049720015

ABSTRACT:
A foaming polysiloxane composition providing excellent expansion ratio and expansion control comprising: (A) 100 parts by weight of an .alpha., .omega.-dihydroxyorganopolysiloxane, (B) 0.01-50 parts by weight of an organopolyhydroxypolysiloxane, (C) an organopolyhydrogensiloxane wherein 1 molecule contains at least 2 units represented by the general formula: ##EQU1## and in such quantity that SiH lies within the range of 0.5-30 mole per mole of total silanol groups in components A and B, (D) platinum or platinum compounds in a quantity of 0.1-200 ppm calculated as platinum metal per total weight of said components A, B and C, and (E) an organosilicon compound with acetylenic unsaturated groups in a quantity of 0.001-10 parts by weight per 100 parts by weight of components A,B,C and B; and a cured product thereof were disclosed.

REFERENCES:
patent: 4024091 (1977-05-01), Lee et al.
patent: 4026842 (1977-05-01), Lee et al.
patent: 4631299 (1986-12-01), Laisney et al.
patent: 4746334 (1988-05-01), Matsui et al.
patent: 4931485 (1990-06-01), Inoue et al.

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