CPC C11D 3/10 (2013.01) [C11D 1/825 (2013.01); C11D 3/044 (2013.01); C11D 3/3707 (2013.01); C11D 3/378 (2013.01); C11D 3/3761 (2013.01); C11D 3/386 (2013.01); C11D 11/0035 (2013.01)] | 18 Claims |
1. An alkaline detergent composition, comprising: 1 wt-% to 80 wt-% of an alkalinity source comprising an alkali metal; and 1-wt % to 15 wt-% of a terpolymer comprising acrylic acid and maleic acid or acrylic acid and itaconic acid; and 2-acrylamido methylpropane sulfonic acid, vinyl sulfonic acid, styrene sulfonic acid, allyl sulfonic acid or methallyl sulfonic acid, wherein a) the alkalinity source comprises an alkali carbonate, an alkali metal hydroxide, or both, and the terpolymer comprises 80 wt-% to less than 85% wt-% acrylic acid, 10% wt-% to 19 wt-% maleic acid, and 1 wt-% to 15 wt-% 2-acrylamido 2-methyl propane sulfonic acid, vinyl sulfonic acid, styrene sulfonic acid, allyl sulfonic acid or methallyl sulfonic acid, b) the alkalinity source comprises an alkali carbonate, an alkali metal hydroxide, or both, and the terpolymer comprises 80 wt-% to 90 wt-% acrylic acid, 5 wt-% to 20% wt-% itaconic acid, and 5% wt-% to 10% wt-% 2-acrylamido 2-methylpropane sulfonic acid, vinyl sulfonic acid, styrene sulfonic acid, allyl sulfonic acid or methallyl sulfonic acid; or c) the alkalinity source comprises an alkali metal hydroxide and the terpolymer comprises 70 wt-% to 80 wt-% acrylic acid, 10 wt-% to 20 wt-% maleic acid and 1 wt-% to 15 wt % 2-acrylamido 2-methylpropane sulfonic acid, vinyl sulfonic acid, styrene sulfonic acid, allyl sulfonic acid or methallyl sulfonic acid, wherein the composition lacks a water soluble silicate, and wherein the terpolymer has a molecular weight of about 1,000 to about 50,000.
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