Polyphenylene ether resin composition
CA 1195024 A · Owner: Mitsubishi Gas Chemical Company, Inc. · Inventors: Ukita, Eiji; Okabe, Masao; Sugio, Akitoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyphenylene ether resin composition comprising, (A) a polyphenylene ether resin (B) at least one compound selected from the group consisting of 2-(o-hydroxyphenyl)benzotriazoles represented by the following formula (I), (I), wherein R1 R2, R3 and R4 are identical or dif-, ferent and each represents a hydrogen atom a halogen atom, a hydroxyl group, an alkyl group an alkoxy group, an alkoxycarbonylalkyl group an aryl group or an aralkyl group, and X represents a halogen atom, and 2-hydroxybenzophenones represented by the following formula (II), (II), wherein R5 represents a hydrogen atom a, hydroxyl group or an alkoxy group, R6 represents a hydrogen atom or a hydroxyl group R7 represents …
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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 8, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 8, 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.