Modified rubber compositions containing aromatic six- membered heterocyclic nitrogen-containing groups
CA 1257049 A · Owner: Firestone Tire & Rubber Company (The) · Inventors: Tate, David P.; Graves, Daniel F.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Title: MODIFIED RUBBER COMPOSITIONS CONTAINING AROMATIC SIX-MEMBERED HETEROCYCLIC NITROGEN-CONTAINING GROUPS, ABSTRACT OF THE DISCLOSURE, Modified rubber compositions are described which when cured exhibit high rebound and reduced hysteresis. The uncured rubber compositions are prepared by reacting (a) at least one polymer rubber containing an alkali metal and carbon-carbon unsaturation with (b) at least one aromatic six-membered heterocyclic nitrogencontaining compound substituted with a group capable of reacting with the alkali metal of the polymer rubber. Filled vulcanizates made by vulcanizing a composition comprising at least one of the above-described uncured modified rubber …
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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 July 4, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 4, 2006.
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Timeline
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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.