Process for preparing aqueous binder composition
CA 1248675 A · Owner: Shell Canada Limited · Inventors: Feuerhahn, Martin P.O.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
Process for preparing an aqueous binder composition which comprises, (a) dispersing pigment powder having a particle size less than 20 micrometres in a liquid, solvent-free epoxy resin (b) dispersing the resultant paste in water (c) reacting the resultant dispersion with a secondary amine the, amount of amine or amines being sufficient to provide at least one N-H function per epoxy group of the epoxy resin and, (d) neutralising the resulting suspension of epoxy-amine adduct coated particles.
Read the whole patent
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 10, 1989. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended January 10, 2006.
- 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.