Anti-skinning agents for oxidatively drying coating compositions
CA 2247653 A1 · Owner: Link, Gunter · Inventors: Link, Gunter; Edelmann, Dirk
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The present invention relates to coating compositions containing oxidatively drying binders and anti-skinning agents corresponding to formula (Ia) or (Ib), or , wherein, Y1 and Y2 are the same or different and represent hydrogen chlorine or, fluorine, X+ represents a group corresponding to formula I and, R1, R2, R3, R4 and R5 are the same or different and represent hydrogen a, C1-C10 linear or branched alkyl group that may contain one or more hydroxy groups, an aryl group or a C5-C7 cycloalkyl group. The present invention also relates to anti-skinning agent mixtures containing these anti-skinning agents.
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 September 17, 1998. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended September 17, 2018.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 17, 2020.
- 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.