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US 5,162,060 AGranted
Polymer-modified cements with improved chemical resistance
AssigneeRohm and Haas Company
InventorsCharles W. Bredow, Frederick J. Schindler
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AssigneeRohm and Haas Company
InventorsCharles W. Bredow, Frederick J. Schindler
Estimating the term…
A coating composition is used for coating or overlaying Portland cement concrete or metal. The composition includes a synthetic polymer latex having ureido functional groups, an amine-functional epoxy curing agent, a liquid epoxy resin, and a hydraulic cement. The coating composition has superior thermal shock resistance and low cost in comparison with epoxy/amine-type polymer concrete, and excellent strength development and chemical resistance in comparison with conventional latex-based cementitious compositions. The coating composition can be mixed from a pair of storage-stable components; a dry mix including the hydraulic cement and the epoxy resin, and optionally larger size aggregate, and a wet mix including the polymer latex and the amine curing agent. The two components can be mixed on site to give a fluid coating composition having a good 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 polymer-modified cementitious composition having improved chemical resistance, the composition comprising:
A curable latex composition for use in preparing a composition including hydraulic cement for coating or overlaying Portland cement concrete, the curable latex composition comprising:
A two-component composition for use in preparing a coating composition for coating or overlaying Portland cement concrete, the composition comprising:
A process for protecting a Portland cement concrete surface, the process comprising:
An article formed from Portland cement concrete and having a protective coating formed on at least a portion of the surface of the article, the protective coating being formed from a composition comprising:
Dependencies are inferred from the claim text.