Curable organosiloxane compositions exhibiting reduced mold stai

Details Curable organosiloxane compositions exhibiting reduced mold stai Curable organosiloxane compositions exhibiting reduced mold stai

1992-11-16

1994-06-14

Marquis, Melvyn I.

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

Synthetic resins

Processes of preparing a desired or intentional composition...

524493, 524588, C08K 910

Patent

active

053210581

ABSTRACT:
The combination of an organic peroxide, a platinum-containing hydrosilation catalyst that is encapsulated within microparticles of a thermoplastic silicone resin, and acetylenic alcohol as the platinum catalyst inhibitor imparts a unique and desirable combination of properties to organosiloxane compositions curable by a platinum-catalyzed hydrosilylation reaction when the compositions contain a gum-type organopolysiloxane as the major ingredient. The compositions have long term storage stability and cure completely when molded. Cured articles molded from the compositions exhibit excellent mold release properties together with the absence of scorching, mold staining and surface tackiness.

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patent: 4929669 (1990-05-01), Jensen
patent: 5006372 (1991-04-01), Wolfer et al.
patent: 5017654 (1991-05-01), Togashi et al.

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