Curable polyorganosiloxane composition

Details Curable polyorganosiloxane composition Curable polyorganosiloxane composition

1988-11-16

1990-05-01

Marquis, Melvyn I.

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

Synthetic resins

From silicon reactant having at least one...

528 24, 528 34, 528 33, 528 32, 522 99, 522148, C08G 7706

Patent

active

049219260

ABSTRACT:
A curable polyorganosiloxane composition is disclosed, comprising: (A) 100 parts by weight of polyorganosiloxane having at least two hydroxyl groups or hydrolyzable groups bonded to a silicon atom in the molecule thereof and having a viscosity at 25.degree. C. of 10 to 1,000,000 cSt, (B) 0 to 2,000 parts by weight of polyorganosiloxane having at least two alkenyl groups bonded to a silicon atom in the molecule thereof and having a viscosity at 25.degree. C. of 10 to 1,000,000 cSt, (C) 0.5 to 20 parts by weight of an organosilicon compound having more than 2 (on the average) hydrolyzable groups bonded to a silicon atom in the molecule thereof, (D) 0 to 10 parts by weight of a catalyst for a condensation reaction, and (E) 0.1 to 5 parts by weight of an organic peroxide, wherein at least 0.01 mol % of all organic groups bonded to a silicon atom as contained in (A) to (C) is an alkenyl group. The composition has both condensation reaction curability and ultraviolet ray curability.

REFERENCES:
patent: 4528081 (1985-07-01), Lien et al.
patent: 4824875 (1989-04-01), Gutek

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