Water based alkyd resin coating composition containing a polyisocyanate crosslinking agent
CA 1162672 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Miller, Lester I.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A water based coating composition that can be dried at ambient temperatures and is useful for coating metal or plastic substrates and in particular for finishing or repairing automobiles and trucks; the coating composition contains water, organic solvent binder and pigments; the binder is of, (1) an alkyd of an esterification product of drying oil fatty acids, aromatic polycarboxylic acids and a polyhydric alcohol;, (2) an alkylated melamine formaldehyde resin, (3) an acrylic dispersing resin and (4) an organo metallic drier;, the improvement that is used with this composition is (1) a polyisocyanate such as the biuret of hexamethylene diisocyanate or isophorone diisocyanate and, (2) an …
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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 February 21, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended February 21, 2001.
- 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.