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US 4,448,922 AGranted
Coagulated polyurethane coating compositions
AssigneeNorwood Industries Inc.
InventorJohn R. McCartney
Life of this patent
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Abstract
An aqueous coating composition is comprised of an aqueous anionic polyurethane dispersion and a salt of hydrofluorosilicic acid, wherein the pH of the composition is acidic and the composition is thixotropic. The composition is particularly useful for coating irregular substrates to form a regular surface thereon.
Claims9
An aqueous coating composition comprising:
- an aqueous anionic polyurethane dispersion;
- and
- a salt of hydrofluorosilicic acid;
- wherein the pH of said composition is acidic and said composition is thixotropic.
1 more element
Dependencies are inferred from the claim text.