Modified epoxy resin composition
CA 1187237 A · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Tachibana, Akihiro; Oshima, Takao; Hino, Minoru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Abstract, The invention provides modified epoxy resin compositions having flexibility and compatibility with conventional epoxy resins as well as maintaining the desirable original properties of the epoxy resin before modification such as good, mechanical strength, adhesion heat resistance and chemical, resistance. The compositions are obtained by treating an epoxy resin with at least one modified adduct D of a conjugated diene polymer or copolymer which has an imido bond and/or amido bond and a semi-ester structure and has an acid value owing to a free carboxyl group of 5 to 100 the modified adduct being obtained by reacting an adduct A of a polymer of a conjugated diene having a number …
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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 14, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 14, 2002.
- 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
Timeline From CIPO dates
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.