Polydimethylsiloxanes having improved thermal stability
CA 1249899 A · Owner: Dow Corning Corporation · Inventors: Jones, James E.; Swihart, Terence J.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
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)polydimethylsiloxanes, 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.
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Granted February 7, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 7, 2006.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.