Detergent additives and detergent compositions containing them

C - Chemistry – Metallurgy – 11 – D

Patent

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C11D 3/08 (2006.01) C11D 3/12 (2006.01) C11D 3/20 (2006.01) C11D 3/33 (2006.01)

Patent

CA 1197156

ABSTRACT A builder system for detergent compositions comprises 25 to 97% by weight of an aluminosilicate cation-exchange material such as Zeolite A and 3 to 75% by weight, in total, of an organic precipitant builder having a polyvalent anion, for example, an alkyl or alkenyl malonate or succinate, and an organic sequestrant such as a nitrilotriacetate. The ratio of precipitant to sequestrant is 10:1 to 1:10. The builder mix is advantageously used in detergent compositions containing less than 10% inorganic phosphate, and gives good results in zero-phosphate compositions.

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