US 6,187,386 B1 · Liquid sealant composition and method of using same

Abstract

An aqueous coating composition for coating concrete-like materials to prevent loss of water vapor during hardening. The aqueous coating composition comprises 5.0-45.0% by weight of a wax or wax-like material, 1.0-10.0% by weight of polyvinyl alcohol, 0-1.0% by weight of a biocide and the balance of water. Also disclosed is a method of coating a concrete-like material including the step of applying, to the surface of the concrete-like material a coating of the aqueous coating composition of the invention. Also disclosed is an article of manufacture which includes a concrete-like material having applied thereto a coating as described above. The aqueous coating composition surprisingly meets the relevant ASTM and other standards for concrete curing without employing any hazardous materials and/or volatile organic compounds.

Claims14

Dependent claims

A method of reducing the loss of water vapor from a material which undergoes a hydration reaction during its hardening period comprising:

applying to the surface of an uncured material which undergoes a hydration reaction a coating of an aqueous composition comprising polyvinyl alcohol, a hydrocarbon wax, and the balance of water, said hydrocarbon wax and polyvinyl alcohol being present in a ratio of 3:1 to 35:1, said coating being applied at an application rate of 1.0-10.0 m2/liter;
and
allowing said coating to remain in place at least until said material is fully hardened.

Dependencies are inferred from the claim text.

Liquid sealant composition and method of using same

Life of this patent

Liquid sealant composition and method of using same

Life of this patent

Abstract

Claims14