Hard surface cleaning compositions comprising phosphinosuccinic acid adducts and methods of use
First Claim
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1. A detergent composition comprising:
- a phosphinosuccinic acid derivative comprising a phosphonosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts;
a water soluble polymer selected from the group consisting of a polycarboxylic acid and hydrophobically modified polycarboxylic acid; and
from 60-90 wt % of an alkalinity source comprising an alkali metal hydroxide, metasilicate, and/or silicate,wherein a use solution of the detergent composition has a pH between about 10 and 13.5;
wherein the detergent composition does not contain an alkali metal carbonate and reduces the formation, precipitation, and/or deposition of hard water scale;
wherein the use solution of the detergent composition comprises about 1,000-4,000 ppm of the alkalinity source, from about 1 ppm to about 500 ppm of the water soluble polymer, and about 0.1-400 ppm of the phosphinosuccinic acid derivative; and
the composition has more of the alkalinity source in weight percentage than of the phosphonosuccinic acid derivative.
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Abstract
Methods employing detergent compositions effective for reducing hard water scale and accumulation on hard surfaces, namely within food, beverage and pharmaceutical applications are disclosed. The detergent compositions employ phosphinosuccinic acid adducts in combination with an alkalinity source and optionally polymers, surfactants and/or oxidizers, providing alkaline compositions having a pH between about 10 and 13.5.
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Citations
17 Claims
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1. A detergent composition comprising:
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a phosphinosuccinic acid derivative comprising a phosphonosuccinic acid and mono-, bis- and oligomeric phosphinosuccinic acid adducts; a water soluble polymer selected from the group consisting of a polycarboxylic acid and hydrophobically modified polycarboxylic acid; and from 60-90 wt % of an alkalinity source comprising an alkali metal hydroxide, metasilicate, and/or silicate, wherein a use solution of the detergent composition has a pH between about 10 and 13.5; wherein the detergent composition does not contain an alkali metal carbonate and reduces the formation, precipitation, and/or deposition of hard water scale; wherein the use solution of the detergent composition comprises about 1,000-4,000 ppm of the alkalinity source, from about 1 ppm to about 500 ppm of the water soluble polymer, and about 0.1-400 ppm of the phosphinosuccinic acid derivative; and the composition has more of the alkalinity source in weight percentage than of the phosphonosuccinic acid derivative. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17)
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Specification