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Expired Canadian patentCanada

Adhesives with a high level of adhesion on plastics materials

CA 1250384 A · Owner: Bayer Aktiengesellschaft · Inventors: Fischer, Wolfgang; Klein, Gerhard; Hombach, Rudolph

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Abstract From the Canadian patent

This invention relates to radically hardening adhesives which contain polymerizable isocyanates and which are distinguished by high adhesive capacity on plastics materials. More particularly the invention relates to a two-component adhesive of a) from 5 to 70 parts by weight of a polymer selected from the group consisting of polyacrylates, polymethacrylates, polychloroprene chlorinated, polyethylene, chlorosulphonated polymers acrylonitrile-butadiene, rubbers, styrene butadiene rubbers and ethylene vinyl acetate polymers, b) from 20 to 80 parts by weight of a reactive diluent with a polymerizable group selected from the group consisting of esters of (meth-)acrylic acid, styrene mono- and …

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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 February 21, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 2006.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledJune 3, 1985
GrantedFebruary 21, 1989
Term endedFebruary 21, 2006
Patent numberCA 1250384 A
Classification (IPC)C09J4/06

Timeline

Timeline From CIPO dates

1986198919921995199820012004Application filedJune 3, 1985Patent grantedFeb 21, 1989Term endedFeb 21, 2006

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