Water-based coating composition having carbamate-melamine cross-linking, method of preparing the same, and a cured film thereof
CA 2425948 A1 · Owner: Bremser, Wolfgang · Inventors: Lessek, Paul; Ramesh, Swaminathan; Bremser, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention is directed to a curable water-based coating , composition utilized in waterborne coating systems. The coating composition is the reaction product of a water-based copolymer prepared by free-radical polymerization, and a cross-linking agent. The copolymer is the reaction product of a first block and a second block. The first block is the reaction product of a first ethylenically unsaturated monomer acrylic acid, and a , second ethylenically unsaturated monomer methyl methacrylate, as well as the , reaction product of a vinylaromatic hydrocarbon monomer diphenylethylene. The , second block is the reaction product of a plurality of ethylenically unsaturated …
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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
- Filed November 19, 2001. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 19, 2021.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 19, 2023.
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.