A method for coating crosslinkable epoxidized monohydroxylated diene polymer coating compositions on primed substrates
CA 2268279 A1 · Owner: Saint Clair, David John · Inventors: Saint Clair, David John
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides a method for painting a substrate which comprises: a) priming the substrate with a primer selected from the group consisting of epoxy resin primers and polyester resin primers; b) applying to the primed substrate a crosslinkable basecoat composition comprising from 10 to 90 percent by weight of an epoxidized monohydroxylated polydiene polymer from 8 , to 60 percent by weight of an amino resin crosslinking agent and from 2 to 40 , percent by weight of a reinforcing agent; and c) applying over the basecoat a clearcoat selected from the group consisting of epoxidized monohydroxylated polydiene-based clearcoats, polyester clearcoats and acrylic clearcoats.
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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
- Filed October 14, 1997. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 14, 2017.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 14, 2019.
- 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.