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US 11,952,556 B2Granted
Detergent composition comprising phosphinosuccinic acid adducts and methods of use
AssigneeEcolab USA Inc.
InventorsCarter M. Silvernail, Erik C. Olson
Life of this patent
Estimating the term…
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 hard 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.
Claims20
A solid detergent composition comprising:
- from about 0.01 wt-% to about 40 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;
- and
- from about 10 wt-% to about 80 wt-% of an alkalinity source comprising an alkali metal hydroxide, carbonate, metasilicate, and/or silicate,
- wherein a use solution of the solid detergent composition has a pH greater than about 9;
- and
- wherein the composition does not contain a bleaching agent.
3 more elements
A solid detergent composition comprising:
- from about 0.01 wt-% to about 40 wt-% of a phosphinosuccinic acid derivative comprising a phosphinosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;
- an alkalinity source comprising an alkali metal hydroxide, carbonate, metasilicate, and/or silicate;
- and
- a surfactant,
- wherein a use solution of the solid detergent composition has a pH between about 9 and 12.5;
- and
- wherein the composition does not contain a bleaching agent.
4 more elements
Dependencies are inferred from the claim text.