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Expired Canadian patentCanada

Water-dispersible resin composition, water-dispersible coating composition and coating method using the coating composition

CA 1341171 C · Owner: Kansai Paint Company, Limited · Inventors: Mitsuji, Masaru; Takaya, Yasuo; Endo, Mitsugu

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Abstract From the Canadian patent

Disclosed are (1) a water-dispersible resin composition prepared by a process comprising; (I) reacting a silane monomer (A) having hydrolytic functional group and/or silanol group and polymerizable unsaturated bond with a vinyl monomer (B) in an aqueous medium to obtain a three-dimensionally crosslinked particulate polymer, (II) reacting the particulate polymer with the silane monomer (A) and/or an allyl acrylate or allyl methacrylate (C), and (III) copolymerizing the resulting reaction product with a vinyl monomer component comprising a carboxyl-containing vinyl monomer (D) followed by neutralizing the carboxyl group; (2) a water-dispersible coating composition comprising a crosslinking …

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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 16, 2001. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 16, 2018.
  • 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 14, 1989
GrantedJanuary 16, 2001
Term endedJanuary 16, 2018
Patent numberCA 1341171 C
Classification (IPC)C08F289/00 +2 more

Timeline

Timeline From CIPO dates

1990199319961999200220052008201120142017Application filedJune 14, 1989Patent grantedJan 16, 2001Term endedJan 16, 2018

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