Extrudable polymeric composition
CA 1340932 C · Owner: Betso, Stephen R. · Inventors: Foye, Duane F.; Betso, Stephen R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is a polymeric, composition comprising vinylidene chloride with improved thermal stability. The process comprises either advance addition or polymer slurry addition of a salt of a nonalkenic weak acid during the polymerization of the vinylidene chloride. The polymeric composition comprises a reaction product of a salt of a nonalkenic weak acid in an amount effective to provide improved thermal stability to the polymeric composition. In a preferred embodiment, the present invention further comprises adding a salt of a carboxylic acid to the polymer slurry.
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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 March 21, 2000. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 21, 2017.
- 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.