Olefinic thermoplastic elastomer composition and method for producing the same
CA 2312436 A1 · Owner: Itoh, Yuichi · Inventors: Kobayashi, Kyoko; Uchiyama, Akira; Kawasaki, Masaaki
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to an olefinic thermoplastic elastomer composition which comprises a crystalline polyolefin resin(A), an ethylene-.alpha.-olefin-non-conjugated polyene copolymer rubber(B) and at least one rubber(C) selected from polyisobutylene butyl rubber and a propylene-ethylene copolymer rubber having a propylene content of 50 mol% or more or an ethylene- .alpha.-olefin copolymer(D) having a density of 0.870 to 0.940 (g/cm3) and an ethylene content of 85 mol% or more said ethylene-.alpha.-olefin-, non-conjugated polyene copolymer rubber(B) being a crosslinked thermoplastic elastomer composition, being obtained by random copolymerization of ethylene, an .alpha.-olefin …
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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 June 27, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 27, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 27, 2022.
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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.