Elastomer compositions and processes for producing the same
CA 2234812 C · Owner: Sumitomo Bakelite Company, Limited · Inventors: Tsujimoto, Motoyoshi; Iwasa, Tsuyoshi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
There is disclosed a moisture-curable elastomer composition obtained by dynamic heat treatment of a mixture comprising, (a) an ethylene-.alpha.-olefin-unconjugated diene copolymer rubber, (b) a silicon-based crosslinking agent having two or more SiH groups within the molecule, (c) a hydrosilylation catalyst and (d) a hydrolyzable silane group-containing thermoplastic resin. Also disclosed is an elastomer composition resulting from molding of the above elastomer composition, followed by contacting with water prefer-, ably in the presence of a silanol catalyst to thereby, cause crosslinking of the hydrolyzable silane groupcontaining thermoplastic resin. The elastomer composition of 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
- Filed October 9, 1996 and granted April 22, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 9, 2016.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 9, 2018.
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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.