Inhibiting premature vulcanization of diene rubbers
CA 1077043 A · Owner: Monsanto Company · Inventors: Kerwood, Joseph E.; Coran, Aubert Y.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
New compounds with a nucleus of where the, dangling valence on the nitrogen is linked to a second carbonyl and R is alkyl, aryl, or cycloalkyl are inhibitors of premature vulcanization of diene rubbers. The R may be substituted to give a bis-sulfenimide of the formula R'-S-R-S-R' where R is an alkane arylene or cycloalkane and R' is an imide. A combination of a vulcanization accelerator and an inhibitor of this invention is an improved rubber additive which allows longer and safer processing time for rubber.
Read the whole patent
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 May 6, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 6, 1997.
- 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.