Polydimethylsiloxanes having improved thermal stability

Details Polydimethylsiloxanes having improved thermal stability Polydimethylsiloxanes having improved thermal stability

1984-06-15

1985-07-09

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...

252400R, 252407, 524398, 556 15, C08K 504

Patent

active

045283133

ABSTRACT:
Silicone compositions having improved thermal oxidative stability are disclosed. The compositions contain iron acetylacetonate, nickel acetylacetonate, cerium acetylacetonate, alpha,omega-bis(trimethylsiloxy)-polydimethylsiloxanes, and optionally, a carboxylic acid. The compositions show greatly increased gel times at temperatures of, e.g. 275.degree. C.

REFERENCES:
patent: 2445567 (1948-07-01), Elliott
patent: 2465296 (1949-03-01), Swiss
patent: 4070343 (1978-01-01), Kishimoto et al.

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