Aqueous coating compositions containing a mercaptan polyester and an aminoplast
CA 1077638 A · Owner: Ciba-Geigy Ag · Inventors: Winterbottom, Kenneth; Massy, Derek J.R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Curable compositions suitable for use as surface coatings, comprise (i) 100 parts by weight, calculated on its resin-forming solids content, of an ammonium or amine salt of a carboxyl-containing polyester which contains, on average, at least two mercaptan groups directly attached to aliphatic carbon atoms per molecule and at least one aliphatic group of 8 or more carbon atoms (ii) from 5 to 100 parts by weight, calculated on its resinforming solids content, of a water-soluble aminoplast containing per average molecule, directly attached to an amido nitrogen atom or atoms of urea or of a polyamino-1,3,5-triazine at least two, groups of formula -CH2OR where R denotes a hydrogen atom or a, …
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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
- Granted May 13, 1980. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended May 13, 1997.
- 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.