Silicone composition and cured product

Details Silicone composition and cured product Silicone composition and cured product

2006-12-05

2009-06-30

Zimmer, Marc S (Department: 1796)

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

Synthetic resins

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

C525S478000, C525S479000, C528S015000, C528S031000, C528S032000

Reexamination Certificate

active

07553915

ABSTRACT:
A silicone composition is provided comprising (A) an organopolysiloxane of resin structure consisting of R1SiO1.5, R22SiO, and R3aR4bSiO(4−a−b)/2units, wherein R1, R2, and R3are methyl, ethyl, propyl, cyclohexyl or phenyl, R4is vinyl or allyl, a is 0, 1 or 2, b is 1 or 2, a+b is 2 or 3, the number of recurring R22SiO units being 10 to 300, (B) an organohydrogenpolysiloxane of resin structure consisting of R1SiO1.5, R22SiO, and R3cHdSiO(4−c−d)/2units, wherein R1, R2, and R3are as defined above, c is 0, 1 or 2, d is 1 or 2, c+d is 2 or 3, the number of recurring R22SiO units being 10 to 300, and (C) a platinum catalyst. The silicone composition cures into a product exhibiting flexibility and minimized surface tack, and can be effectively molded on the existing molding machines.

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