Thermoplastic resin composition
CA 1238439 A · Owner: Mitsubishi Rayon Company Ltd. · Inventors: Kishida, Kazuo; Shigemitsu, Hideyuki; Kawasaki, Hiroshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A thermoplastic resin composition having excellent heat resistance, impact resistance, moldability and platability, which comprises:, (i) from 10 to 90% by weight of a thermoplastic polycarbonate;, (ii) from 10 to 90% by weight of a graft copolymer obtained by firstly polymerizing a monomer mixture comprising more than 30 and not more than 50% by weight of acrylonitrile and at least 50 and less than 70% by weight of styrene, as monomers for the first stage of graft polymerization, in the presence of a rubber-like polymer, and then polymerizing a monomer mixture comprising from 15 to 40% by weight of acrylonitrile and from 60 to 85% by weight of .alpha.-methylstyrene as monomers, for the …
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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 June 21, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended June 21, 2005.
- 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.