Laundry compositions

Details Laundry compositions Laundry compositions

C - Chemistry, Metallurgy

11

D

8/87, 134/5.3

C11D 3/39 (2006.01)

Patent

CA 1194654

LAUNDRY COMPOSITIONS ABSTRACT Laundry bleaching and detergent compositions comprising a peroxygen bleaching agent and a catalyst system therefor, the catalyst system comprising a heavy metal cation of defined bleach catalytic activity, particularly copper, iron or manganese cations, an auxiliary metal cation having little or no bleach catalytic activity, particularly zinc or aluminium cations, and a sequestrant having defined stability constants for the catalytic and auxiliary metal cations, particularly ethylenediaminetetraacetic acid, ethylenediaminetetra(methylenephosphonic acid) and water- soluble salts thereof. The laundry bleaching and detergent compositions deliver improved bleach performance, parti- cularly at medium to high wash temperatures. Catalyst compositions for peroxygen bleaching agents are also disclosed.

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