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US 10,377,971 B2Granted
Detergent composition comprising phosphinosuccinic acid adducts and methods of use
AssigneeEcolab USA Inc.
InventorsCarter M. Silvernail, Erik C. Olson
Life of this patent
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Abstract
Detergent compositions effective for controlling hard water scale accumulation are disclosed. Detergent compositions employing phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid (PSO) derivatives with alkali metal carbonate and/or alkali metal hydroxide reduce had water scale accumulation on treated surfaces at alkaline conditions between about pH of 9 and 12.5. Methods employing the detergent compositions and preventing hard water scale accumulation are also provided.
Claims14
A method of cleaning while preventing hard water scale accumulation on a treated surface comprising:
- generating a use solution of a detergent composition within a ware washing machine,
- applying the use solution of the detergent composition to a substrate surface,
- wherein the detergent composition comprises between about 0.01 wt-% and about 40 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts and an alkalinity source selected from the group consisting of an alkali metal hydroxide, carbonate, metasilicate, silicate, and combination thereof, and
- wherein the detergent composition is effective for preventing the formation, precipitation and/or deposition of hard water scale on the surface;
- wherein the use solution of the detergent composition has a pH greater than 9;
- and the composition is a detergent composition, contains more of the alkalinity source than the phosphinosuccinic acid derivative in terms of weight percentage, and does not contain a bleaching agent.
3 more elements
Dependencies are inferred from the claim text.