Thermoplastic resin composition having a polycarbonate and multi-stage graft copolymer
CA 1309787 C · Owner: Mitsubishi Rayon Company Ltd. · Inventors: Hongo, Masafumi; Toyooka, Yutaka; Shigemitsu, Hideyuki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
1. A thermoplastic resin composition comprising: (A) from 15 to 90 parts by weight of 2 polycarbonate resin;, (B) from 10 to 85 parts by weight of a multi-stage graft copolymer obtained by graft polymerizing from 2 to 50 parts by weight of an acrylate monomer (b) as a monomer for the first stage graft polymerization in the presence, of from 15 to 80 parts by weight of a rubbery polymer (a) of which at least 50% by weight is constituted by butadiene units and then graft polymerizing from 18 to 83 parts by weight of vinyl monomers (c) comprising from 25 to 85% by weight of an aromatic vinyl monomer (i) from 15, to 40% by weight of a vinyl cyanide monomer (ii) and from 0 to 35% by weight of …
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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 3, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 3, 2009.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.