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US 11,306,276 B2Granted
Detergent composition containing a tetrapolymer
AssigneeEcolab USA Inc.
InventorsKelly Anne Rightmire, Carter M. Silvernail
Life of this patent
Estimating the term…
Abstract
Detergent compositions effective for controlling hard water scale accumulation are described herein. In particular, the compositions combine a tetrapolymer with an alkaline composition to effectively prevent or remove calcium carbonate scale formations. Methods of employing the detergent compositions and of preventing scale accumulation are provided for use in alkaline warewash and other applications.
Claims20
A scale inhibiting detergent composition comprising:
- one or more sources of alkalinity;
- one or more surfactants;
- and
- a scale inhibiting polymer consisting of a maleic acid tetrapolymer, and optionally one or more polycarboxylic acid homopolymers.
1 more element
A scale inhibiting detergent composition comprising:
- between about 5 wt.% to about 80 wt.% of one or more sources of alkalinity;
- between about 5 wt.% to about 50 wt.% of a nonionic surfactant;
- and
- a scale inhibiting polymer consisting of a maleic acid tetrapolymer and optionally one or more polycarboxylic acid homopolymers, wherein the composition comprises between about 1 wt.% to about 15 wt.% of the maleic acid tetrapolymer, and wherein the maleic acid tetrapolymer includes over 50% maleic acid, up to about 5% of maleic anhydride, up to about 50% of acrylic acid, and up to about 50% of a 2-carbon alkane group.
1 more element
A method of preventing scale formation on a surface comprising:
- providing a scale inhibiting composition comprising one or more sources of alkalinity;
- one or more water conditioning agents;
- and a scale inhibiting polymer;
- and
- contacting the scale inhibiting composition with a surface,
- wherein the scale inhibiting polymer is a maleic acid tetrapolymer, and
- wherein the water conditioning agents are phosphates, phosphonates, aminocarboxylic acids, inorganic water conditioning agents, polycarboxylic acids, polycarboxylic acid homopolymers, or a combination thereof.
4 more elements
Dependencies are inferred from the claim text.