Polyarylene sulfide resin composition and process for the preparation of the same
CA 2047834 A1 · Owner: Kubota, Masaru · Inventors: Serizawa, Hajime; Sano, Hiroyuki; Kubota, Masaru
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyarylene sulfide resin composition is improved in toughness, impact resistance and heat resistance. It is produced by mixing (A), (B) and (C) while being heatmelted for at least 30 seconds. It comprises (A) 97 to 20 parts by weight of a polyarylene sulfide resin, and, (B) 3 to 80 parts by weight of a polyester resin with (C) 0.01 to 5 parts by weight of at least one alkoxysilane compound selected from the group consisting of vinylalkoxysilane, epoxyalkoxysilane, aminoalkoxysilane, mercaptoalkoxysilane and allylalkoxysilane or a partial hydrolyzate thereof, and, (D) 0 to 400 parts by weight of one or more fillers selected from among fibrous, powdery and flaky ones.
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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 24, 1991. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended July 24, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by July 24, 2013.
- 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.