Tertiary alcohol-diblocked diisocyanate urea urethane oligomers and coating compositions comprising same
CA 1193276 A · Owner: Ford Motor Company Of Canada, Limited · Inventors: Holubka, Joseph W.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
This invention provides polymer forming resin systems and high solids solvent based chain-extendable crosslinkable coating compositions comprising same. The invention comprises a polyepoxide, preferably a diepoxide of molecular weight between about 100 and about 1000 used generally in amounts from about 10% to about 50% by weight of total resin, and novel diblocked dilsocyanate urea urethane oligomers of molecular weight between about 300 and about 5000. The resin components provide chain-extension polymerization during cure at elevated temperature, in situ, on the surface of a substrate. The resin system is self-crosslinking. That is no additional, crosslinking component is required. The …
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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
- Granted September 10, 1985. A Canadian patent filed before October 1, 1989 lasted 17 years from grant, so its term ended September 10, 2002.
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Timeline
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Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.