Cycloolefin type random copolymer compositions
CA 1329437 C · Owner: Kishimura, Kotaroh · Inventors: Akana, Yoshinori; Ishimoto, Akio; Kishimura, Kotaroh
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
In accordance with the present invention there are, provided cycloolefin type random copolymer compositions excellent in heat resistance, chemical resistance rigidity, impact resistance, etc. which comprise (A) a cycloolefin type random copolymer containing 40-85 mol% of an ethylene component and 60-15 mol% of a cycloolefin component represented by the following general formula I or II and having an intrinsic viscosity ? of 0.05-10 dl/g as measured at 135°C in decalin and a softening temperature (TMA) of not lower than 70°C, and, (B) one or more non-rigid copolymers selected from the group consisting of:, (i) a cycloolefin type random copolymer containing an ethylene component, at least one …
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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 May 10, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2011.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.