Poly-n,n-hydroxyalkylamides of polybasic carboxylic acids and a process for the production thereof
CA 1214900 A · Owner: Bayer Aktiengesellschaft · Inventors: Haas, Peter; Hettel, Hans
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
POLY-N,N-HYDROXYALKYLAMIDES OF POLYBASIC CARBOXYLIC ACIDS AND A PROCESS FOR THE PRODUCTION THEREOF ABSTRACT OF THE DISCLOSURE, A polycarboxylic acid alkyl or aryl ester corresponding to the formula, is reacted with a dialkanolamine corresponding to the formula, at a temperature from 50 to 200°C. The alcohol ROH formed during this reaction is removed from the reaction mixture and the product recovered corresponds to the formula, in which the radicals n X, A and R are as defined, herein. The thus-produced poly-N,N-hydroxyalkylamides are particularly useful as cell-opening materials in the production of elastic polyurethane foams.
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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 December 2, 1986. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 2, 2003.
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Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.