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Expired Canadian patentCanada

Resin composition and a process for preparing same

CA 1069640 A · Owner: Unitika Ltd. · Inventors: Asahara, Nakaba; Asai, Yasuhiko; Yasue, Kenji

CIPO record

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Abstract From the Canadian patent

A resin composition comprising (A) an aromatic copolyester comprising the reaction product in about equimolar amounts of (1) terephthalic acid and/or the functional derivatives thereof, isophthalic acid and/or the functional derivatives thereof and (2) a bisphenol and/or the functional derivatives thereof, (B) a polyamide, and (C) a polyalkylene phenylene ester or a polyalkylene phenylene ester ether and a, process for preparing the same. The resin composition has excellent moldability and the molded articles made therefrom have superior chemical resistance, thermal stability and mechanical properties.

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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 January 8, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 8, 1997.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Filed—
GrantedJanuary 8, 1980
Term endedJanuary 8, 1997
Patent numberCA 1069640 A
Classification (IPC)C08L67/02 +2 more

Timeline

Timeline From CIPO dates

198119831985198719891991199319951997Patent grantedJan 8, 1980Term endedJan 8, 1997

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