Detergent powder compositions containing sodium perborate...

Details Detergent powder compositions containing sodium perborate... Detergent powder compositions containing sodium perborate...

C - Chemistry, Metallurgy

11

D

134/5.4

C11D 3/39 (2006.01)

Patent

CA 1236371

Abstract Improved detergent powder compositions containing at least a detergent-active material, a detergency builder and sodium perborate monohydrate, and method of making such compositions are disclosed, the improvement being that a sodium perborate monohydrate is used which has physical characteristics of specific surface area (SA in m2/g) and pore volume (PV in cm3/g) such that the formula (SA + 31.25 PV - 16.25) is greater than zero. The detergent powder compositions comprising said specific perborate monohydrate have less tendency to caking during storage under high humidity climatic con- ditions and have the further advantage of maintaining their quick bleach delivery in solution owing to said perborate monohydrate which retains its rapid rate of dissolution despite water-uptake during storage.

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