Organopolysiloxane composition for the formation of a cured rele

Details Organopolysiloxane composition for the formation of a cured rele Organopolysiloxane composition for the formation of a cured rele

1992-12-17

1993-11-23

Marquis, Melvyn I.

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

Synthetic resins

Mixing of two or more solid polymers; mixing of solid...

524267, 524730, 524731, 528 15, C08L 8307

Patent

active

052644995

ABSTRACT:
The instant invention pertains to an organopolysiloxane composition for the formation of a release film, that has a high curing rate at relatively low temperatures (.ltoreq.100.degree. C.) and that forms a cured film that both adheres strongly to various types of substrates and is highly releasing for tacky or sticky substances. The organopolysiloxane composition for the formation of a cured release film of the instant invention comprises (A) organopolysiloxane that contains in each molecule at least 2 alkenyl groups with the general formula H.sub.2 C.dbd.CH--(CH.sub.2).sub.n --, wherein n=2 to 8; (B) an organohydrogenpolysiloxane that contains in each molecule at least 2 silicon-bonded hydrogen atoms and at least 1 alkenyl group with the general formula H.sub.2 C.dbd.CH--(CH.sub.2).sub.n --, wherein n=2 to 8; (C) an addition-reaction inhibitor; (D) platinum group metal catalyst; and optionally (E) a nonreactive organopolysiloxane that contains neither silicon-bonded alkenyl nor silicon-bonded hydrogen.

REFERENCES:
patent: 5064916 (1991-11-01), Sasaki et al.

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