Thermosetting cationic acrylic latices and their use in coating compositions
CA 1191291 A · Owner: Ppg Industries Ohio, Inc. · Inventors: Das, Suryya K.; Welsh, David A.; Kania, Charles M.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A cationic thermosetting latex coating compositions prepared, therefrom and the process for providing a protective coating are disclosed. The thermosetting latex comprises a blocked isocyanate curing agent and a cationic acrylic latex which is prepared by copolymerizing ethylenically unsaturated monomers, at least one of which contains an active hydrogen group, in an acidic medium in the presence of a cationic surfactant of, which the gegen-ion is derived from certain phosphorous-containing acids. Such latices when formulated into coating compositions provide corrosion-, resistant coatings.
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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 July 30, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended July 30, 2002.
- 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.