Resinous reaction product including graft polymers of an aromatic 1,2 epoxy resin and an extender polymer
CA 1165491 A · Owner: Scm Corporation · Inventors: Ting, Vincent W.; Marcinko, Richard M.; Woo, James T.K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Provides new and improved water-reducible coating compositions and methods of making them. Three preferred processes are disclosed. These differ in the manner of incorporating and chemical nature of an extender polymer. Broadly the process of the invention is one for forming an aqueous dispersion of a fluent resinous composition of a. a mixture in an organic solvent of, (i) an ionizable graft polymer of an epoxy resin and an addition polymerized resin, the addition polymerized resin being bonded to aliphatic backbone carbon atoms of the epoxy resin by carbon-to-carbon bonds, and, (ii) an extender resin;, b. an aqueous vehicle and, c. an ionizing agent;, the ionization present from said …
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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 April 10, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 10, 2001.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
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Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.