Modified polyphenylene ether, process for preparing the same and thermoplastic resin composition comprising the same
CA 2120132 A1 · Owner: Yamaguchi, Takanari · Inventors: Furuta, Motonobu; Yamaguchi, Takanari; Ohashi, Kazutoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A modified polyphenylene ether comprising repeating units of the formula (1):, (1), wherein R1 and R2 are independently from each other, a hydrogen atom or a hydrocarbon group having 1 to 20 carbon atoms and having a number average polymerization degree of 20 to 12,000 in which, 0.02/X to 1/X of methyl groups at the 2- and/or 6-positions of phenylene group are substituted by an aminomethyl group wherein X is a number average polymerization degree a process for preparing, the same, and a thermoplastic resin composition containing (A) 1 to 75 % by weight of the above modified polyphenylene ether and (B) 99 to 25 % by weight of a liquid crystalline polyester. Since this modified polyphenylene …
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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
- Filed July 27, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 27, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 27, 2015.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.