Polydimethylsiloxanes having improved thermal stability

Details Polydimethylsiloxanes having improved thermal stability Polydimethylsiloxanes having improved thermal stability

C - Chemistry, Metallurgy

08

L

400/7214, 400/72

C08L 83/04 (2006.01) C08K 5/00 (2006.01) C08K 5/07 (2006.01) C08K 5/09 (2006.01)

Patent

CA 1249899

POLYDIMETHYLSILOXANES HAVING IMPROVED THERMAL STABILITY Abstract of the Disclosure Silicone compositions having improved thermal oxidative stability are disclosed. The compositions contain iron acetylacetonate, nickel acetylacetonate, cerium acetylacetonate, alpha,omega-bis(trimethylsiloxy)polydi- methylsiloxanes, and optionally, a carboxylic acid. The compositions show greatly increased time to gellation at temperatures of, e.g. 275°C. The silicone compositions of the invention are useful in heat transfer, as fiber lubricants, and as high temperature lubricants.

478985

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