Powder coating compositions, a process for their preparation and their use for the coating heat resistant substrates
CA 2089029 A1 · Owner: Meier-Westhues, Hans-Ulrich · Inventors: Meier-Westhues, Hans-Ulrich; Halpaap, Reinhard; Schultz, Wolfgang
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Mo-3852, LeA 28,901, POWDER COATING COMPOSITIONS A PROCESS FOR THEIR PREPARATION, AND THEIR USE FOR THE COATING HEAT RESISTANT SUBSTRATES ABSTRACT OF THE DISCLOSURE, The present invention relates to a powder coating composition having a glass transition temperature of 20 to 80°C and containing, A) 56 to 86.9% by weight of a polyacrylate polyol component having a hydroxyl number of 30 to 155 and a glass transition temperature of 30 to 120°C, B) 0.1 to 9% by weight of a polyester polyol component having a hydroxyl number of 40 to 180 and a glass transition temperature of -40 to 80°C and, C) 13 to 35% by weight of a polyisocyanate component having a glass transition temperature of -40 to 60°C …
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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 8, 1993. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended February 8, 2013.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by February 8, 2015.
- 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.