Diene rubbers containing carboxyl groups
CA 2372512 A1 · Owner: Trimbach, Jurgen · Inventors: Scholl, Thomas (Deceased); Trimbach, Jurgen
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to rubber mixtures containing diene rubber groups which contain 0.1 - 2 wt. % carboxyl groups and have a glass transition temperature of -120 to -50~. The invention also relates to mixtures comprising filling materials, optionally other rubbers and rubber adjuvants and vulcanizates produced therefrom. The inventive rubber mixtures are suitable for use in the production of fully reinforcing, abrasion-resisting shaped bodies especially , in the production of tyre treads which exhibit a particularly high degree of anti-skid resistance in wet driving conditions are resistant to abrasion and , offer low rolling resistance. Said rubber mixtures are also suitable for …
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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 April 20, 2000. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended April 20, 2020.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by April 20, 2022.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
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.