High alkaline warewash detergent with enhanced scale control and soil dispersion
AssigneeEcolab USA Inc.
InventorsDAVID DOTZAUER, TIMOTHY MEIER, CARTER M. SILVERNAIL, JOHN MANSERGH
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Abstract
Detergent compositions and methods of preparing and using the detergent compositions are disclosed. The detergent compositions comprise a polymer system comprising at least one polycarboxylic acid polymer, copolymer, or terpolymer, an alkalinity source comprising an alkali metal carbonate, a nonionic surfactant and water. The detergent compositions are suitable at alkaline pH and reduce or prevent scale formation, improve soil dispersion, and provide effective detergency.
Claims19
A concentrated detergent comprising:
- a polymer system comprising at least one polycarboxylic acid polymer, copolymer, or terpolymer;
- an alkalinity source comprising an alkali metal carbonate;
- a nonionic surfactant;
- and
- water;
- wherein said detergent has an alkaline pH.
A concentrated warewash detergent comprising:
- between about 0 wt. % and about 15 wt. % of a polymer system comprising at least one polymaleic acid homopolymer, at least one polyacrylic acid copolymer, and at least one maleic anhydride/olefin copolymer;
- between about 50 wt. % and about 99 wt. % of an alkali metal carbonate;
- between about 0 wt. % and about 15 wt. % of a nonionic surfactant;
- and
- water;
- wherein said detergent has a pH between about 7 and about 14 and wherein the at least one polymaleic acid homopolymer, at least one polyacrylic acid copolymer, and at least one maleic anhydride/olefin copolymer are in a ratio of between about 1:1:1 and about 3:3:1.
The method of claim 14, wherein said warewash detergent is substantially free of phosphorus.
Dependencies are inferred from the claim text.