Continuous hydrocyanation process using zinc halide promoter
CA 1297499 C · Owner: Rapoport, Morris · Inventors: Rapoport, Morris
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
TITLE, Continuous Hydrocyanation, Process Using Zinc Halide Promoter Abstract, Process for production of dinitriles using zero-valent nickel catalysts having low ligand ratio and low amounts of zinc halide as the promoter. Dinitriles are intermediate products in the production of diamines, and diamines are used in the production of polyamides. PI-0413
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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 17, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 17, 2009.
- 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.