Process for the preparation of coatings with hydantoin structures by the reaction of compounds containing carbodiimide groups with unsaturated carboxylic acids
CA 1332549 C · Owner: Pedain, Josef · Inventors: Pedain, Josef; Halpaap, Reinhard; Dunwald, Willi
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention relates to a process for the production of coatings based on polymers having a hydantoin structure by reacting blocked polyisocyanate carrying carbodiimide and/or uretone imine groups with .alpha..beta.-unsaturated dicarboxylic acids or derivatives thereof at 50 to 700°C said reaction being carried out on the substrate to be coated,
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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 October 18, 1994. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended October 18, 2011.
- 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.