Radiation-curable polyurethane dispersion
CA 2463971 A1 · Owner: Renard, Vincent · Inventors: Bontinck, Dirk; Tielemans, Michel; Renard, Vincent
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to new radiation-curable composition comprising an aqueous dispersion containing an unsaturated polyurethane with repeating units of tetramethylxylylene diisocyanate as the essential diisocyanate compound. The invention also relates to a process for making these dispersions in the absence of solvents. The product and process can meat severe environmental requirements in terms of absence of solvents absence of amines and absence of , irritating materials. The coatings obtained from the dispersions of the invention have all together a good resistance combined with a good cold flexibility. In particular, the coatings are glossy and exhibit a high adhesion, a good …
Read the whole patent
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 27, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended November 27, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by November 27, 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.