Coating compositions based on amine-blocked disocyanate and a polyepoxide
CA 1047188 A · Owner: E.I. Du Pont De Nemours And Company · Inventors: Ojakaar, Leo
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A coating composition for treating organic polymeric substrates to improve the adhesive bond between the substrate and rubber. The coating composition contains an amine-blocked diphenylmethane-4,4'-diisocyanate and a polyepoxide in a liquid carrier. - 1 -
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 January 23, 1979. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 23, 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.