Heat cured silicone elastomer

Details Heat cured silicone elastomer Heat cured silicone elastomer

1981-10-13

1982-08-31

Marquis, Melvyn I.

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

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

528 24, 528 32, 528 34, 528901, 427387, 4273881, 428447, 428450, 524588, C08L 8304

Patent

active

043473369

ABSTRACT:
A composition comprising a hydroxyl endblocked polydiorganosiloxane, methylvinylsilyl-bis-pyrrolidone, and organic peroxide will simultaneously chain extend and crosslink when heated. The composition can be prepared with a low viscosity polydiorganosiloxane to yield a low viscosity composition useful for coating, impregnating, and forming operations. Because the polymer chain extends as well as crosslinks during cure, the physical properties of the cured elastomer are superior to those of a low viscosity polymer which is merely crosslinked to an elastomer.

REFERENCES:
patent: 2876234 (1959-03-01), Hurwitz et al.
patent: 3364160 (1968-01-01), Golitz et al.
patent: 3378520 (1968-04-01), Sattlegger et al.
patent: 3417047 (1968-12-01), Golitz et al.
patent: 4012375 (1977-03-01), Hahn
patent: 4020044 (1977-04-01), Crossan et al.

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