Autoxidisable coating compositions containing dispersed non-crosslinked polymer microparticles
CA 1113622 A · Owner: Imperial Chemical Industries Limited · Inventors: Thompson, Morice W.; Bentley, John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Coating compositions are described in which the film-forming material consists of (a) 30-85% by volume of disperse particles of size 0.01 - 20 microns of, which not less than 50% by volume are non-cross-linked condensation polymer microparticles, and (b) 70 - 15% by volume of a liquid continuous phase of viscosity 0.1 poise which is curable to a film-forming polymer by means of an autoxidative (i.e. air-drying) mechanism; the particles (a) being stable dispersed in the liquid (b) in a deflocculated state by means of an amphipathic steric stabilising agent. Typically, the polymer microparticles may be composed of a non-cross-linked polyester and the liquid continuous phase of a drying-oil …
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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 December 1, 1981. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended December 1, 1998.
- 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.