Synthetic resins or natural rubbers -- part of the class 520 ser – Synthetic resins – From reactant having at least one -n=c=x group as well as...
Patent
1981-12-28
1983-09-06
Briggs, Sr., Wilbert J.
Synthetic resins or natural rubbers -- part of the class 520 ser
Synthetic resins
From reactant having at least one -n=c=x group as well as...
525454, 525456, 525528, C08G 1832, C08G 1880, C08L 6300
Patent
active
044030860
ABSTRACT:
Resin composition suitable for high-solids, solvent-based coating composition comprises chain-extendable, crosslinkable polyol of molecular weight of about 100 to 1000, having at least three hydroxyl groups, chain-extendable diblocked diisocyanate of molecular weight about 200 to about 2000, crosslinking agent reactive with the hydroxyfunctionality of the polyol and substantially unreactive with de-blocked isocyanate functionality of the diblocked diisocyanate, and, preferably, catalyst(s). The composition cures at elevated temperature to provide a coating on a substrate, such as steel, which coating is highly resistant to corrosion, humidity and solvents and provides corrosion protection for the substrate. The diblocked diisocyanate is the reaction product of an organic diisocyanate with monofunctional blocking agent. The polyol is preferably the reaction product of a diol of molecular weight about 60 to about 500 with a diepoxide of molecular weight about 100 to about 1000 such as bisphenol A epichlorohydrin epoxy resin, hydantoin epoxy resin and the like.
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Dickie Ray A.
Holubka Joseph W.
Briggs Sr. Wilbert J.
Ford Motor Company
May Roger L.
McDermott Peter D.
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