Water based acrylic lacquer composition
CA 1160785 A · Owner: E. I. Du Pont De Nemours And Company · Inventors: Brasen, Wallace R.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
An aqueous dispersion lacquer composition of a binder in an aqueous medium; the binder is comprised of (1) a dispersed Polymer A of methyl methacrylate that can contain small amounts of adhesion promoting monomers such as diethyl amino ethyl methacrylate and other monomers that lower the glass transition temperature of the polymer such as butyl methacrylate or butyl acrylate; (2) a dispersant Polymer B of methyl methacrylate optionally, styrene, an alkyl acrylate or an alkyl methacrylate and an ethylenically unsaturated carboxylic acid; and, (3) a graft copolymer of the dispersed Polymer A and the dispersant Polymer B; and, The composition contains sufficient base such as amine or ammonium …
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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 January 17, 1984. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 17, 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
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.