Aqueous cross-linkable polymer composition for use in coatings
CA 2283373 A1 · Owner: Delaunoit, Genevieve · Inventors: Delaunoit, Genevieve; Pilaszek, Wincenty Lambertus Stanislaw; Weber, Maarten Johannes Jacobus
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention pertains to an aqueous cross-linkable polymer composition comprising:, a) a first polymer, which comprises acid groups and is made water-soluble by the addition of a volatile base;, b) a dispersion of a second polymer which comprises carbonyl-functional, groups and which is water-insoluble and obtainable by emulsion polymerization in the presence of an aqueous solution of the first polymer; c) a cross-linking agent which can react by condensation with the carbonyl-functional groups of the second polymer; and d) a third polymer, which is water-soluble and has an amine functionality. The invention also pertains to a process for preparing such an aqueous polymer composition.
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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 September 24, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 24, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 24, 2021.
- 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.