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Expired Canadian patentCanada

Curing composition of polyether having reactive silicon-containing groups and a (meth)acrylate polymer

CA 1237220 A · Owner: Kanegafuchi Kagaku Kogyo Kabushiki Kaisha · Inventors: Hirose, Toshifumi; Isayama, Katsuhiko

CIPO record

Overview

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

A curing composition which comprises (A) a polyether having at least one reactive silicon-containing group in the molecule and (B) an acrylate polymer and/or an methacrylate polymer. The composition of the present invention has excellent weatherability adhesive property, initial tackiness, especially at a low temperature cohesive force, workability and stickness and is useful as a pressure sensitive adhesive, a sealing material and, the like.

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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 24, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 24, 2005.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledOctober 18, 1983
GrantedMay 24, 1988
Term endedMay 24, 2005
Patent numberCA 1237220 A
Classification (IPC)C08L71/02 +2 more

Timeline

Timeline From CIPO dates

19841987199019931996199920022005Application filedOct 18, 1983Patent grantedMay 24, 1988Term endedMay 24, 2005

Sources & verification

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