Aqueous coating composition, in particular for coating finish films and continuous edges, and process for coating finish films and continuous edges
CA 2074366 C · Owner: Basf Lacke + Farben Aktiengesellschaft · Inventors: Roll, Joachim; Hintze-Bruning, Horst
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 acid-curing aqueous coating compositions, in particular for the coating of finish sheeting and continuous edging which, contain aminoplast resin and hydroxyl-containing polyesters, wherein the polyester is prepared from a) 33 to 55 mol% of a dicarboxylic acid component obtained from, a1) 50 to 100 mol% of olefinically unsaturated aliphatic dicarboxylic acids, a2) 0 to 50 mol% of saturated aliphatic dicarboxylic acids, a3) 0 to 50 mol% of saturated aliphatic dicarboxylic acids, and, b) 67 to 45 mol% of a polyol component obtained from b1) 20 to 90 mol% of at least one monomeric and/or oligomeric glycol having 2 to 4 carbon atoms per glycol segment and number …
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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 16, 1991 and granted December 29, 1998. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended January 16, 2011.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by January 16, 2013.
- 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
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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.