Preparation of durable epoxy (meth)acrylic polymer with oxirane-containing terminal groups
CA 1291285 C · Owner: Hutchins, Clyde Spencer · Inventors: Hutchins, Clyde Spencer; Costello, Timothy David; Cohen, Gordon Mark
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Preparation of durable Epoxy (Meth)Acrylic Polymer with Oxirane -Containing Terminal Groups ABSTRACT OF THE DISCLOSURE, A process for the preparation of an acrylic curable epoxy resin having an ABA block copolymer structure, wherein each A block end segment contains a terminal oxirane group and the B block centre segment is of acrylate or methacrylate units using, group transfer polymerization, is disclosed. Epoxy resins may be used in coatings, adhesives castings, laminates and the like
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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 October 22, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 22, 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.
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.