Advanced epoxy resins
CA 1236637 A · Owner: The Dow Chemical Company · Inventors: Hickner, Richard A.; Grays, Gwendolyn M.; Owens, Kevin A.
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 an advanced epoxy resin and to a coating composition comprising (I) the advanced epoxy resin, (II) a curing quantity of at least one curing agent for component (II) and, (III) at least one solvent in a sufficient quantity such that the coating composition including components (I), (II) and (III) and any other desirable components has a suitable application viscosity. This invention is characterized in that the advanced epoxy resin is prepared by reacting in the presence of a suitable catalyst (A) a composition comprising (1) at least one aliphatic diepoxide and, optionally, (2) at least one aromatic diepoxide, with (B) at least one compound having two aromatic …
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 May 10, 1988. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 10, 2005.
- 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.