Polyphenylene sulfide composition and method of producing the same
CA 1324225 C · Owner: Polyplastics Co. Ltd. · Inventors: Ichikawa, Yukio; Fukuda, Makoto; Katto, Takayuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention discloses a composition comprising a mixture containing 100 parts by weight of substantially linear polyphenylene sulfide which is treated with an aqueous solution of an acid or a salt of a strong acid and a weak base and which has not less than 70 mol% of a repeating unit of 0.05 to 5 parts by weight of at least one aminoalkoxysilane compound and, if necessary, 0.01 to 3 parts by weight of a releasing agent the, mixture being kneaded under heating at a temperature higher than the melting point of the polyphenylene sulfide, said composition exhibiting excellent impactstrength and weld strength and providing molded product with small amount of flash generated during …
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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 November 9, 1993. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 9, 2010.
- 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.