Process for the preparation of n-(chloroaryl)-n',n'-dialkylamidines
CA 1051028 A · Owner: Hoechst Aktiengesellschaft · Inventors: Landauer, Franz
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
PROCESS FOR THE PREPARATION OF N-(CHLOROARYL)-N',N'- DIALKYLAMIDINES, Abstract of the disclosure: A process for the preparation of N-(chloroaryl)-N',N'dialkylamidines in which N-aryl-N',N'-dialkylamidines in the form of their salts are directly chlorinated in halogenated hydrocarbons at 15 - 80°C. from the hydrochloride salts thus obtained the free amidines are set free with alkaline agents. The N-(chloroaryl)-N',N'-dialkylamidines are valuable intermediates for the preparation of dyestuffs and insecticides.
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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 20, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended March 20, 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.