Autoxidisable coating compositions containing dispersed cross-linked polymer microparticles
CA 1113621 A · Owner: Imperial Chemical Industries Limited · Inventors: Bentley, John; Thompson, Morice W.
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 cross-linked polymer microparticles, and (b) 70 - 15% by volume of a liquid continuous phase of viscosity 0.1 - 20 poise which is curable to a film-forming polymer by means of an autoxidative (i.e. airdrying) mechanism, the particles (a) being stably 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 cross-linked polyester and the liquid continuous phase of a drying-oil fatty acid ester …
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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
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.