Ambient and elevated temperature curing polymer compositions useful for aqueous based paints and wood coatings
CA 2133696 A1 · Owner: Rhone-Poulenc Specialty Chemicals Co. · Inventors: Say, Terence Edwin; Zeszotarski, Jonathan Charles; Lee, Sharon
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The use of the following polymer latex composition in aqueous based paints or wood coatings wherein said polymer is derived from the following monomers:, (a) acetoacetoxyethyl acrylate or acetoacetoxyethyl methacrylate; (b) glycidyl acrylate or glycidyl methacrylate; (c) one or more ethylenically unsaturated polymerizable acids; and (d) one or more monomers copolymerizable therewith; wherein the total weight percent of (a) (b) and (c) in the polymer, latex composition is between about 3 weight percent and about 60 weight percent of the total amount of solids in the latex and, wherein the total weight percent of (d) in the latex composition is between about 97 weight percent and about 40 …
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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 October 5, 1994. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 5, 2014.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 5, 2016.
- 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.