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US 2026/0226295 A1Published application
Coating composition
AssigneeRohm and Haas Company
InventorsKimy Yeung, Jeffrey J. Sobczak J. Sobczak
Life of this patent
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Abstract
Dirt pickup resistance and/or color retention of an exterior insulation and finish system (EIFS) with a finish layer having high PVC of inorganic filler and/or pigment can be improved by adding an alkali metal siliconate to the finish layer in an amount effective to improve dirt pickup resistance and/or color retention.
Claims15
An aqueous coating composition comprising:
- a) From 70 to 90 pigment volume concentration of inorganic filler;
- and
- b) An acrylic polymer binder in a concentration effective to bind the filler and other components of the aqueous coating composition to a substrate;
- and
- c) An alkali metal siliconate, in a concentration that is effective to increase the dirt pickup resistance or color retention of the resulting coating;
- and
- d) Water in a quantity sufficient to fully wet the dry ingredients and provide a slurry.
4 more elements
An exterior insulation and finish system, called EIFS, attached to an exterior surface of a structure, which EIFS comprises:
- a) A layer of insulation that comprises a foamed polymer insulation and is adhered directly or indirectly to a substrate that forms the exterior surface of the structure;
- b) A base coat that comprises a fiber mesh embedded in a coating material and is adhered directly or indirectly to the insulation layer;
- and
- c) A finish coat that is adhered directly or indirectly to the base coat and comprises:
- i) From 70 to 90 pigment volume concentration of inorganic filler and/or inorganic pigment;
- ii) An acrylic polymer binder in a concentration effective to bind the filler and other components of the finish coat to a substrate;
- and
- iii) An alkali metal siliconate and/or its reaction products in a concentration that is effective to increase the dirt pickup resistance or color retention of the finish coat.
5 more elements
Dependencies are inferred from the claim text.