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Expired Canadian patentCanada

Stabilized polyphenylene ether-polyamide compositions

CA 1338812 C · Owner: Avakian, Roger W. · Inventors: Avakian, Roger W.; Van Der Meer, Roelof

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Abstract From the Canadian patent

A compatibilized polyphenylene ether-polyamide resin composition is disclosed which has good retention of impact resistance characteristics even after ageing as well as good oxidation and melt stability. The composition comprises:, a) a blend of 5 to 95 parts by weight of polyphenylene ether resin and 95 to 5 parts by weight of polyamide resin and, b) from 0.001 to 0.5 parts by weight per 100 parts of resin blend a), of a metal salt such as CuCl2 CuI, copper, acetate and cerium stearate.

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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 December 24, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 24, 2013.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledApril 27, 1989
GrantedDecember 24, 1996
Term endedDecember 24, 2013
Patent numberCA 1338812 C
Classification (IPC)C08L71/12 +2 more

Timeline

Timeline From CIPO dates

19901993199619992002200520082011Application filedApril 27, 1989Patent grantedDec 24, 1996Term endedDec 24, 2013

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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.