A polyurethane resin and method of producing it, a coating composition comprising a polyurethane resin, use of a polyurethane resin for printing plastic substrates
CA 2433004 A1 · Owner: Catherin, Gilles · Inventors: Catherin, Gilles; Eisele, Gilles; Eugene, Denis
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A polyurethane resin (soluble in organic solvents preferably in alcohols) , being in one embodiment of the present invention the reaction product of at least one diisocyanate components having isocyanate reactive functional groups, said components comprising a first group of at least one polyol a , second group of at least one polyol and a third group of at least one polyol at least one amine and optionally a terminating agent wherein all polyols of said first group are of an average molecular weight in the range of between 1000 to 10000 g/mol wherein all polyols of said second group are of an average molecular weight in excess of 10000 up to 20000 g/mol and wherein all polyols , of …
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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 January 26, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 26, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 26, 2024.
- 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.