Surfactant-containing acetoacetoxy-functional and enamine-functional polymers
CA 2255702 C · Owner: Eastman Chemical Company · Inventors: Taylor, James Wayne; Collins, Martha Jean
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Surfactant-containing acetoacetoxy-functional polymers (SAAPs) are described. The acetoacetoxy-functional polymer may be a surfactant-containing enaminefunctional polymer and more preferably a surfactant-containing polymeric , (polyamino)enamine (PPAE). The PPAE is the reaction product of a surfactantcontaining acetoacetoxy-functional polymer (SAAP) and a poly(alkylenimine). The polymers may be prepared as waterborne polymer compositions such as , latexes. The waterborne polymer compositions can be prepared with high solids content while maintaining low viscosity. Waterborne polymer compositions containing the polymers of the inventions are useful in a variety of coating formulations …
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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 May 28, 1997 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended May 28, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by May 28, 2019.
- 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
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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.