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US 2013/0274168 A1Published application
High alkaline detergent composition with enhanced scale control
AssigneeEcolab USA Inc.
InventorsCarter M. Silvernail, Erik C. Olson, Elizabeth R. Kiesel
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Abstract
A detergent composition for preventing scale on various surfaces includes a threshold system, a caustic and a surfactant system. The threshold system includes a sulfonate/acrylate copolymer, an acrylate homopolymer and a phosphonoalkane carboxylic acid with a sulfonate/acrylate copolymer to acrylate homopolymer weight ratio of between about 2:1 to about 1:2. The pH of the detergent composition is between about 10 and about 13.
Claims5
A method of removing scale during a wash cycle, the method comprising:
- diluting a detergent concentrate to form a detergent use solution, the detergent concentrate comprising an alkalinity source constituting between about 1% and about 75% by weight of the detergent concentrate;
- a surfactant system constituting between about 0.05% and about 25% by weight of the detergent concentrate;
- and a threshold system constituting between about 0.0005% and about 30% by weight of the detergent concentrate;
- wherein the threshold system comprises a sulfonate/acrylate copolymer, an acrylate homopolymer and a phosphonoalkane carboxylic acid and wherein the phosphonoalkane carboxylic acid constitutes between about 5% to about 30% by weight of the threshold system;
- and wherein the detergent concentrate has a pH of at least about 10;
- and
- contacting a substrate with the detergent use solution.
4 more elements
Dependencies are inferred from the claim text.