Capped polydienes
CA 1340469 C · Owner: Robertson-Wilcox, Eileen Sylvia · Inventors: Matrana, Allen Barry; Robertson-Wilcox, Eileen Sylvia; Halasa, Farhan Adel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Polydiene rubbers are commonly compounded with carbon black in making a wide variety of rubber articles including tires, hoses and belts. It is generally desirable for the carbon black to be well dispersed throughout the polydiene in order to attain optimal physical properties. For instance the, traction and rolling resistance of tires which are made utilizing such rubbers can be improved by better dispersing the carbon black throughout the polydiene. The subject invention discloses a technique for capping polydienes in order to improve their affinity for carbon black. The present invention more specifically reveals a process for preparing a polydiene having a high level of affinity 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
- Granted March 30, 1999. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 30, 2016.
- 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.