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Expired Canadian patentCanada

Adhesion of latex coatings to polymeric surfaces

CA 1293164 C · Owner: Kan, Charles S. · Inventors: Kan, Charles S.

CIPO record

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Abstract From the Canadian patent

A process for adhering a latex film to a polymeric substrate through the formation of covalent bonds at the interface of the polymeric substrate and the latex film. The covalent bonds are formed through the reaction of a cyclic imino ether group 2-alkenyl-, -2-oxazoline, and a coreactive group active hydrogen, epoxy or anhydride group one of which is present in the, polymeric substrate and the other of which is present in the latex. A product prepared from the improved method of adhering a latex film to a polymeric substrate is also included.

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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 17, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 17, 2008.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 18, 1986
GrantedDecember 17, 1991
Term endedDecember 17, 2008
Patent numberCA 1293164 C
Classification (IPC)C08J7/04 +2 more

Timeline

Timeline From CIPO dates

19871990199319961999200220052008Application filedSep 18, 1986Patent grantedDec 17, 1991Term endedDec 17, 2008

Sources & verification

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