Aqueous compositions for use in the production of crosslinked polyurethanes
CA 1338294 C · Owner: Bayer Corporation · Inventors: Rosthauser, James W.; Markusch, Peter H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to an aqueously dispersed, heat-curable coating composition comprising, a) a water dispersible, blocked polyisocyanate containing chemically incorporated anionic hydrophilic groups, at least a portion of which are neutralized with volatile organic compounds b) a water dispersible, hydroxyl-terminated polyurethane prepolymer containing chemically incorporated anionic hydrophilic groups at, least a portion of which are neutralized with volatile organic compounds and, c) an epoxy resin which remains stably dispersed in said coating composition. The present invention is also directed to coatings prepared from the above coating composition.
Read the whole patent
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 April 30, 1996. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended April 30, 2013.
- 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.