Process for the preparation of cationic coating compositions
CA 1283994 C · Owner: Kooymans, Petrus Gerardus · Inventors: Kooymans, Petrus Gerardus; Van Der Mark, Johannes Maria; Van Iperen, Roeland
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A process for the preparation of water-thinnable hydrolytically stable, thermosetting, cationic coating compositions, which comprises blending: 1) 5-35 %w of a carboxylated crosslinking compound and, 2) 65-95 %w of an amino group-containing resin binder which, binder comprises the reaction product of a) ammonia, and, b) a blend of, b1) a polyglycidyl ether having n epoxy groups per molecule, wherein 1<n<1.9, said polyglycidyl ether being the reaction product of a multifunctional polyglycidyl ether having x epoxy groups per molecule, wherein x>2, and (x-n) mol of a monofunctional phenol per mol of the multifunctional polyglycidyl ether, and, b2) a diglycidyl ether having an epoxy group …
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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 7, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 7, 2008.
- 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.