Water-based composites with superior cure in thick films, and chemical and shock resistance
First Claim
1. A coating composition for use in coating or overlaying Portland cement concrete or metal, the composition comprising:
- (a) a synthetic polymer latex;
(b) an amine-functional epoxy curing agent, the epoxy curing agent being soluble or dispersible in water;
(c) a silane selected from the class consisting of epoxy-functional silanes and amine-functional silanes;
(d) a liquid epoxy resin; and
(e) filler having a fine particle size.
1 Assignment
0 Petitions
Accused Products
Abstract
A coating composition is used for coating or overlaying Portland cement concrete or metal. The composition includes a synthetic polymer latex, an amine-functional epoxy curing agent, an epoxy-functional or amine-functional silane, a liquid epoxy resin, and a filler having a fine particle size. The coating composition has superior crack resistance and low cost in comparison with epoxy/amine-type polymer concrete, and excellent strength development, chemical resistance, and rapid cure in thick films in comparison with latex-based cementitious compositions. The coating composition can be mixed from a pair of storage-stable components; a dry mix including the fine particle size filler and the epoxy resin, and optionally larger size aggregate, and a wet mix including the polymer latex, the silane, and the amine curing agent. The two components can be mixed on site to give a fluid coating composition having a long pot life and low viscosity, which rapidly develops strength, and ultimately develops high compressive strength, thermal shock resistance, and resistance to chemical attack, especially attack by aqueous acids.
-
Citations
20 Claims
-
1. A coating composition for use in coating or overlaying Portland cement concrete or metal, the composition comprising:
-
(a) a synthetic polymer latex; (b) an amine-functional epoxy curing agent, the epoxy curing agent being soluble or dispersible in water; (c) a silane selected from the class consisting of epoxy-functional silanes and amine-functional silanes; (d) a liquid epoxy resin; and (e) filler having a fine particle size. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
-
-
17. A curable latex composition for use in preparing a composition for coating or overlaying Portland cement concrete, the curable latex composition comprising:
-
(a) a synthetic polymer latex; (b) an amine-functional epoxy curing agent, the epoxy curing agent being soluble or dispersible in water; and (c) a silane selected from the class consisting of epoxy-functional silanes and amine-functional silanes.
-
-
18. A two-component composition for use in coating or overlaying Portland cement concrete, the composition comprising:
-
(a) a first component including; (1) a synthetic polymer latex; (2) an amine-functional epoxy curing agent, the epoxy curing agent being soluble or dispersible in water; and (3) a silane selected from the class consisting of epoxy-functional silanes and amine-functional silanes; and (b) a second component including; (1) a liquid epoxy resin; and (2) filler having a fine particle size, the first component and second component being mixed to provide the coating composition.
-
-
19. A process for protecting a Portland cement concrete surface, the process comprising:
-
(a) applying a fluid protective coating composition to the surface, the coating composition comprising; (1) a synthetic polymer latex; (2) an amine-functional epoxy curing agent, the epoxy curing agent being soluble or dispersible in water; (3) a silane selected from the class consisting of epoxy-functional silanes and amine-functional silanes; (4) a liquid epoxy resin; and (5) filler having a fine particle size; and (b) permitting the coating composition to cure to form a protective coating.
-
-
20. A composite comprising a Portland cement concrete substrate and a protective coating, where the protective coating is on a least a portion of the substrate and where the protective coating comprises:
-
(a) a synthetic polymer latex; (b) an amine-functional epoxy curing agent, the epoxy curing agent being soluble or dispersible in water; (c) a silane selected from the class consisting of epoxy-functional silanes and amine-functional silanes; (d) a liquid epoxy resin; and (e) filler having a fine particle size.
-
Specification