Urethane modified polymers having hydroxyl groups
CA 1192340 A · Owner: The Dow Chemical Company · Inventors: Burton, Bruce L.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention is directed to a curable reaction product of a vinyl ester resin having secondary hydroxyl groups and from 0.05 to 1 equivalent based on the secondary hydroxyls of isocyanatoethyl methacrylate. The products are useful as neat resins and in reinforced plastics.
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 August 20, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 20, 2002.
- 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.