Bleach compositions

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C - Chemistry, Metallurgy

07

F

260/355, 8/87, 2

C07F 15/02 (2006.01) C11D 3/39 (2006.01) C11D 3/395 (2006.01)

Patent

CA 1238049

Abstract A bleach auxiliary for use as a peroxygen bleach catalyst comprising a water-soluble complex of iron and a multi-dentate ligand-forming chelating agent having defined bleach catalytic activity and hydrolytic and oxidative stability. The chelating agent is preferably a hyoroxycarboxylic acid havlng the general formula I R[CnH2n-m(0H)m]CO2H I wherein R is CH2OH, CHO or CO2H, n is from 4 to 8 and m is from 3 to n, or a salt, lactone, ether, acid ester or boric ester thereof. Bleach and laundry compositions containing the complex are also disclosed.

452939

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