Aqueous coating composition and preparation thereof
CA 1258331 A · Owner: Nippon Paint Co. Ltd. · Inventors: Nakaya, Toshiharu; Ueda, Takanobu; Uenaka, Akimitsu
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Aqueous coating composition comprising water insoluble resinous powder, aqueous resin, pigment and other optional additives including hardener, characterized by that said water insoluble resinous powder is composed of polymer obtained by reacting a mixture of epoxy resin and a resin having epoxy reactive functional group, or a resin having both epoxy group and epoxy reactive functional group, with an amine in an amount being sufficient enough to cause ring-opening of 10 to 50% of the total epoxy groups, or composed of carboxyl bearing resin admixed and reacted with high boiling basic compound. These compositions are excellent in storage stability, application characteristic and film …
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 8, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended August 8, 2006.
- 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.