Detergent powder production

Details Detergent powder production Detergent powder production

C - Chemistry, Metallurgy

11

D

134/3.1

C11D 1/66 (2006.01) C11D 1/52 (2006.01) C11D 1/72 (2006.01) C11D 1/86 (2006.01) C11D 3/00 (2006.01) C11D 3/02 (2006.01) C11D 11/02 (2006.01)

Patent

CA 1044982

ABSTRACT OF THE DISCLOSURE In a process of manufacturing a spray-dried detergent powder having a high proportion of its detergent-active material in the form of a nonionic surfactant, the tendency of this powder to autoxidise can be counteracted by incorporating into the slurry (a) an alkaline material in an amount equivalent to at least 5% by weight of sodium oxide and (b) from 1/2 to 6% by weight of an alkanolamide. The weights are based on the weight of the spray-dried powder. An example of a suitable alkaline material is alkaline sodium silicate.

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