Binders with low content in hydrolysable monomer suitable for self-polishing antifouling paints
CA 2459418 A1 · Owner: Sigma Coatings B.V. · Inventors: Vos, Marcel; Gillard, Michel
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Film-forming polymer prepared by polymerisation of: 5 - from more than 0 up to 4 mol% of at least one ethylenically unsaturated monomer unit A selected from the carboxylic acid and sulfonic acid derivatives that can yield an acid function upon hydrolysis in water; 10 - from 5 to 45 mol% of at least one monomer unit B selected from the group consisting of the N-vinyl lactam monomers of general formula CH2=CH-N-CO-R'J the N-vinyl amides of general , formula CH2=CH-NR-CO-15 R" the monomers of general formula CH2=CR"'-C00-R""N- CO-R'I, the monomers of general formula CH2=CR"'C00-R""-NR""'-CO-R" 2-, pyrrolidone-l-isoprenyl ketone, and mixtures thereof wherein - R is H or , selected from …
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 August 22, 2002. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended August 22, 2022.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by August 22, 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.