Method for improving the adhesion of a repair coating to a previously coated substrate
CA 2276793 A1 · Owner: Basf Corporation · Inventors: Campbell, Donald H.; Gessner, Michael A.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
The invention provides a method for improving the adhesion of a repair coating to a coated substrate. It requires that at least one coating composition be, applied to a substrate the coating composition having (a) a film forming component with (i) a crosslinking component comprising one or more aminoplast resins, and (ii) one or more polymers having one or more functional groups which are reactive with the crosslinking component (b) an adhesion improving, additive comprising one or more compounds containing Sn(IV) (c) a catalyst , for, promoting a reaction between crosslinking agent (i) and one or more polymers (ii). The at least one coating composition is cured to provide a coated …
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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 June 25, 1999. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended June 25, 2019.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by June 25, 2021.
- 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.