Polyphenylene ether resin composition
CA 1281456 C · Owner: Nomura, Isao · Inventors: Nomura, Isao; Yoshioka, Hiroshi; Kouno, Kenzi
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 modified with a 1,2-substituted olefin compound having an acid anhydride group, the polyphenylene ether resin before modification having structural units represented by the following formula (I), (I), wherein R1 represents a lower alkyl group having 1 to 3 carbon atoms, and R2 and R3 independently from each other, represent a hydrogen atom or a lower alkyl group having 1 to 3 carbon atoms, in the main chain and, (B) a polyamide resin having recurring units represented by the following formula (II) ?R4-NHCO-R5-CONH? .... (II), wherein R4 represents a xylylene group and, R5 represents a linear alkylene group …
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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 March 12, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 12, 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
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.