Aqueous emulsion coatings composition comprising self-emulsifiable epoxy ester copolymer mixture
CA 1186846 A · Owner: Mobil Oil Corporation · Inventors: Spencer, Arthur T.; Brown, George L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A nongelled hydroxy ester copolymer composition substantially free of oxirane functionality comprising an acidic copolymer-epoxy resin hydroxy ester reaction product, the epoxy resin being a mixture containing at least 5% by weight of aromatic polyether which is difunctional in oxirane functionality which is consumed by reaction with the acidic copolymer and the acidic copolymer being a solution copolymer of monoethylenically unsaturated monomers comprising at least about 20% of monoethylenically unsaturated carboxylic acid, based on the total weight of monomers the epoxy resin mixture constituting at least about 40% of the total resin solids content and providing oxirane functionality in a …
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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 May 7, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2002.
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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.