A binder composition and its use for the production of a coating or sealing composition
CA 2080457 C · Owner: Bayer Aktiengesellschaft · Inventors: Blum, Harald
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 an aqueous binder composition containing, A) an aqueous solution or dispersion of a water-dilutable organic polyol component containing, A1) at least one water-dilutable polyester resin containing sulfonate and hydroxyl groups and having a molecular weight (M n) of 500 to 50,000 an OH number, of 20 to 240 mg KOH/g, a content of sulfonate groups (-SO3-) of 4 to 70 milliequivalents per 100 g of polyester resin and a content of carboxylate groups (-COO-) of 0 to 40 milliequivalents per 100 g of polyester resin and, A2) optionally a reactive thinner containing at least one water-soluble monohydric or polyhydric alcohol which has a molecular weight (M n) below …
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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 October 13, 1992 and granted June 17, 2003. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 13, 2012.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2014.
- 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.