Curable organopolysiloxane compositions

Details Curable organopolysiloxane compositions Curable organopolysiloxane compositions

1995-03-14

1996-06-25

Dean, Ralph H.

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

Synthetic resins

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

528 15, 528 31, 528 32, 524588, C08G 7704

Patent

active

055300766

ABSTRACT:
The invention is a curable composition whose essential structural elements are M and Q units and which provides a cured product that has a flexural modulus capable of withstanding practical applications. The curable organopolysiloxane composition comprises (A) an alkenyl-functional organopolysiloxane whose main components are the R.sup.1.sub.3 SiO.sub.1/2 and SiO.sub.4/2 units where R.sup.1 represents monovalent organic groups, (B) an SiH-containing organopolysiloxane whose main components are the R.sup.2.sub.3 SiO.sub.1/2 and SiO.sub.4/2 units where R.sup.2 represents the hydrogen atom and monovalent organic groups and (C) a platinum catalyst. In addition, the composition exhibits a post-cure flexural modulus of at least 100 MPa.

REFERENCES:
patent: 3699073 (1972-10-01), Wada et al.
patent: 5446087 (1995-08-01), Chizat et al.

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