Fluorinated photoinitiators in highly fluorinated monomers
CA 2471810 A1 · Owner: Jung, Tunja · Inventors: Jung, Tunja; Baudin, Gisele
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides photopolymerizable compositions comprising (A) at least one ethylenically unsaturated photopolymerizable fluocarbon compound selected from polyfluoroalkyl monoacrylates, polyfluoroalkyl monomethacrylatesor polyfluoroalkyl~diacrylates and (B) at least one photoinitiator of the formula (I) R is a radical of the formula (II) s is a number of 1 to 4 r is a number , of 1 to 2; Y is a single bond or is a divalent linker group A if s is 1 is a , radical A0, where A0 is C1-C3oalkyl C1-C30alkenyl, C1-C30alkynyl or C1-, C30aralkyl the radicals being substituted by at least two fluorine atoms and optionally further substituted by OH-, C1-C4alkoxyphenyl-, naphthyl-, …
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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 28, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended January 28, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 28, 2025.
- 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.