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AssigneeRohm and Haas Company
InventorsCharles W. Bredow, Frederick J. Schindler, Charles E. Warburton, Jr.
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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.
A coating composition for use in coating or overlaying Portland cement concrete or metal, the composition comprising:
A curable latex composition for use in preparing a composition for coating or overlaying Portland cement concrete, the curable latex composition comprising:
A two-component composition for use in coating or overlaying Portland cement concrete, the composition comprising:
A process for protecting a Portland cement concrete surface, the process comprising:
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:
Dependencies are inferred from the claim text.