Patents

Phosphate-Free Auto Dishwasher Detergent

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By: TOM BRANNA

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US Patent No. 8,551,930 B2; Henkel AG & Co. KGaA, Duesseldorf, has patented a phosphate-free automatic dishwashing agent. It is comprised of a copolymer comprising at least one mono- or polyunsaturated carboxylic acid monomer,  at least one mono- or polyunsaturated sulfonic acid monomer, and at least one additional nonionic monomer; an acrylic acid homopolymer; and at least one builder. The weight ratio of copolymer to homopolymer is between 10:1 and 1:3....

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