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US 10,308,833 B2Granted
Curable polyurethane coating composition and method of preparing the same
AssigneeDow Global Technologies LLC
InventorsYue Shen, Fu Zhan, Yan Wu
Life of this patent
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Abstract
A curable coating composition having satisfactory low temperature curing property and fast drying speed while maintaining the flexibility and impact resistance of coating films, and also providing the coating films with good anti-corrosion property and good adhesion to a steel substrate; and a process of preparing the curable coating composition.
Claims16
A curable coating composition comprising:
- an isocyanate-reactive component comprising a polyol,
- wherein the polyol is a reaction product of an epoxy component and an epoxy-reactive component at a molar ratio of epoxy-reactive groups of the epoxy-reactive component to epoxy groups of the epoxy component from 0.95:1 to 1.5:1,
- wherein the polyol has an epoxide equivalent weight (EEW) of from 5,000 grams per equivalent to 50,000 grains per equivalent, and wherein the epoxy-reactive component comprises a cashew nutshell liquid;
- and
- an isocyanate component comprising an isocyanate compound having at least two isocyanate functionalities wherein all the isocyanate functionalities are available.
2 more elements
Dependencies are inferred from the claim text.