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US 4,383,091 AGranted
Urethane modified polymers having hydroxyl groups
AssigneeThe Dow Chemical Company
InventorBruce L. Burton
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Abstract
Curable polymeric products are the reaction product of a polymer containing secondary hydroxyl groups and an aliphatic unsaturated isocyanate.
Claims5
A process for preparing vinyl ester resins having reduced viscosities, said process comprising the reaction of at least 50 percent of the secondary hydroxyls of an amine-free vinyl ester of a polyglycidyl ether with isocyanatoethylmethacrylate using a tin salt as catalyst.
Dependencies are inferred from the claim text.