Process for acrylamidoacylation of alcohols
CA 1305701 C · Owner: Heilmann, Steven M. · Inventors: Heilmann, Steven M.; Krepski, Larry R.; Moren, Dean M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention provides a dramatically improved process for the preparation of acrylamide and methacrylamide functional monomers, oligomers and polymers, that avoids the use of acidic catalysts which can cause undesired side reactions. The present invention process involves reacting an alkenyl azlactone with a hydroxy functional compound in the presence of a catalytic amount of either a bicyclic amidine or a trivalent phosphorus compound. These efficient basic catalysts provide unexpectedly increased reaction rates under mild conditions.
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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 July 28, 1992. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 28, 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.