Preparation of graft copolymer of cellulose derivatives and copolymerizable monomers useful as a base coat in a two coat and one bake-coat coating system
CA 1234237 A · Owner: Nippon Paint Co. Ltd. · Inventors: Ogino, Akiharu; Miyazono, Tadafumi; Okude, Yoshitaka
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Preparation of graft copolymer characterized by reacting cellulose ester and mono- or di-ester of maleic or fumaric acid, thereby obtaining cellulose derivative bearing polymerizable double bonding, and then copolymerizing said cellulose derivative with other copolymerizable monomer(s). The invention also includes a coating composition based on thus obtained graft copolymer.
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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 March 15, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 15, 2005.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.