Storage stable, heat curable, coating composition
CA 1291839 C · Owner: W. R. Grace Co. · Inventors: Hannemann, Gerd K.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a novel storage stable heat, curable, coating composition comprising (a) a ketoxime blocked polyisocyanate, (b) a polyol containing 2-4 terminal OH groups (c) at least one ethylenically unsaturated monomer oligomer or prepolymer of the formula: wherein R is H or CH3, R1 is an organic moiety and n is 1 to 4, (d) a free radical thermal initiator for (c) and, (e) a deblocking and curing catalyst for (a). The reaction between (a) and (b) in the composition results in a thermoset material which is believed to for an interpenetrating network with the resulting thermoset. from (c) on thermal curing. The coating composition which is airless sprayable, storage stable and can …
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 November 5, 1991. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended November 5, 2008.
- 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.