Waterborne coatings and binder systems for use therein
CA 2001179 C · Owner: Orth, Ulrich · Inventors: Freese, Karl-Heinz; Orth, Ulrich; Hauefler, Hartmut
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A binder system is provided which is suitable for use as a waterborne coating, particularly as a topcoat aver hydro-basecoats. The binder in accordance with the present invention comprises a water-soluble acrylic resin which has been modified using a monoisocyanate functional compound. The, waterborne coating comprises this binder system in an aqueous base. The resulting waterborne coating exhibits high gloss high solids content with low, cosolvent content good application characteristics, and good stone-chip and weathering resistance. The present waterborne coating also finds use for, example, as an electrocoat, primer/surfacer and/or solid color topcoat.
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
- Filed October 20, 1989 and granted February 1, 2000. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended October 20, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 20, 2011.
- 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.