Reactive diluents and alkyd resin coating compositions
CA 2474439 A1 · Owner: Kirner, Hans Juerg · Inventors: Muehlebach, Andreas; Van Der Schaaf, Paul Adriaan; Dietliker, Kurt
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 reactive diluents of the formulae (Ia Ib, Ic, Id, Ie) and to an alkyd coating composition comprising them. In a preferred embodiment R1 and R2 are hydrogen; R3 is (meth)acryloyloxy-methyl or phenyl para substituted by vinyl, R4 is phenyl or phenyl para substituted by vinyl or (meth)acryloyloxy; or a substituted phenyl residue of the formula -C6H4CH2-W wherein W is (meth)acryloyloxy, or an aliphatic residue of the formula -CH2-Y- A, wherein Y is a bond, O-C1-C12alkylene wherein the alkylene linker is , linear or branched and may be interrupted once or more than once by oxygen A , is hydroxy, C1-C6alkoxy, acetoxy, (meth)acryloyloxy or a phthalate- or , …
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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 February 25, 2003. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 25, 2023.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 25, 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.