Process for the cyanoethylation of aromatic amines
CA 1055048 A · Owner: Texaco Development Corporation · Inventors: Yeakey, Ernest L.; Brennan, Michael E.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PROCESS FOR THE CYANOETHYLATION OF AROMATIC AMINES (D# 75,021-F), ABSTRACT OF THE DISCLOSURE An improved process is disclosed for the production of cyanoethylated aromatic amines comprising contacting an aromatic amine with acrylonitrile in the presence of a silica-alumina catalyst in a liquid phase reaction at elevated temperature. Aromatic polyamines are cyanoethylated according to the process of this invention to form a reaction product comprising poly- (N-monocyanoethylated) aromatic amines and poly-(Nmonocyanoethylated) aromatic amines additionally having at least one cyanoethyl group attached to the nucleus of the aromatic ring. I
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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 May 22, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 22, 1996.
- 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.