Expandable polymeric styrene particles
CA 1186850 A · Owner: Cosden Technology, Inc. · Inventors: Schwarz, Richard A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
of the invention, An improved expandable polymeric styrene particle is provided containing a blowing agent and either a minor amount of ethylene-bis-stearamide and dibromoethyldibromocyclohexane or a minor amount of bis (allyl ether) of tetrabromobisphenol A and a minor amount of pentabromomonochlorocyclohexane. An improved particle results in a significantly reduced final mold cooling cycle in producing the finished molded product when ethylene-bis-stearamide and dibromoethyldibromocyclohexane are incorporated therein. An improved particle exhibiting reduced flammability characteristics results when bis (allyl ether) of tetrabromobisphenol A and pentabromomonochlorocyclohexane are …
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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 May 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2002.
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Timeline
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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.