Cement resin hybrid paint and coating

A method for applying a hybrid cementitious paint on a substrate, the method comprising:

• providing a dry mix comprising a cement present in an amount of from about 2.50 wt % to about 50.00 wt % and one of a calcareous or a siliceous filler present in an amount of from about 2.50 wt % to about 50.00 wt % of the paint;
• providing a wet mix comprising an acrylic resin aqueous dispersion present in an amount of from about 5.00 wt % to about 75.00 wt % and a fatty acid derivative present in an amount of from about 0.01 wt % to about 10.00 wt % of the paint;
• mixing the dry mix with the wet mix to form a coating composition;
• and
• spray coating the coating composition onto a substrate using a high throughput spraying apparatus to form a wet film having a thickness of 20 mils or less;
• wherein the high throughput spraying apparatus is selected from the group consisting of a high volume low pressure (hvlp) paint sprayer, an air-assisted airless paint sprayer, a piston-pump airless paint sprayer, and combinations thereof, and
• wherein when the wet film is dried at 25° C. and 50% relative humidity, the wet film is configured to form a coating on the substrate characterized by film integrity, as measured according to ASTM D5402, and no staining, as measured according to ASTM D1308.

A hybrid cementitious paint for forming a coating on a substrate, comprising:

• a cement present in an amount of from about 9.0 wt % to about 20.00 wt % of the paint;
• an acrylic resin aqueous dispersion present in an amount of from about 5.00 wt % to about 75.00 wt % of the paint;
• one of a calcareous or a siliceous filler present in an amount of from about 38.0 wt % to about 46.00 wt % of the paint;
• an organosilicon compound present in an amount of from about 0.01 wt % to about 5.00 wt % of the paint, wherein the organosilicon compound is selected from siloxanes, polysiloxanes, alkyl or alkoxy silanes having a short carbon chain of 2-6 carbons, alkyl or alkoxy silanes having a medium carbon chain of 6-12 carbons, alkyl or alkoxy silanes having a long carbon chain of 13-21 carbons, alkyl or alkoxy silanes having a very long carbon chain having more than 21 carbons, glycidoxypropylmethyldiethoxysilane, n-octyl triethoxy silane, amino-functional silanes, vinyl-functional silanes, polyorganosiloxanes having methyl, ethyl, propyl, cyclohexyl, or phenyl groups, and combinations thereof;
• a pigment present in an amount of from about 0.01 wt % to about 2.00 wt % of the paint;
• and
• a thickener present in an amount of from about 0.01 wt % to about 0.05 wt % of the paint, wherein the thickener is selected from clay, cellulose derivatives, galactomannans, microbial polysaccharides, carboxylated acrylic copolymer, and combinations thereof, and
• wherein the hybrid cementitious paint is configured to form a coating characterized by film integrity, as measured according to ASTM D5402, and no staining, as measured according to ASTM D1308, when applied at a wet film thickness of 20 mils or less and dried at 25° C. and 50% relative humidity.