Method for producing thermoplastic elastomer composition
CA 2017213 C · Owner: Sumitomo Chemical Co. Ltd. · Inventors: Mashita, Kentaro; Yamaguchi, Noboru; Toyoshima, Yoshiki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic elastomer composition which is excellent in balance of properties such as mechanical properties and thermal properties and in appearance is prepared by melt-kneading (A) 20-58 parts by weight of a saturated polyester resin and (C3) 42-80 parts by weight of an epoxy group-containing ethylene copolymer and then melt-kneading 100 parts by weight of the resulting composition with (C) 0.01-20 parts by weight of a polyfunctional compound containing in one molecule at least two functional groups selected Prom an amino group, a carboxylic acid anhydride group a hydroxyl group and a , group wherein both X and Y are oxygen atoms or sulfur atoms or either X or Y, is an oxygen atom and …
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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 May 18, 1990 and granted October 31, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 18, 2010.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 18, 2012.
- 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.