Process for manufacture of detergent powders

Details Process for manufacture of detergent powders Process for manufacture of detergent powders

C - Chemistry, Metallurgy

11

D

134/3.1

C11D 3/066 (2006.01) C11D 1/72 (2006.01) C11D 3/20 (2006.01) C11D 3/60 (2006.01) C11D 11/02 (2006.01)

Patent

CA 1087475

ABSTRACT OF THE DISCLOSURE The invention relates to the preparation of spray-dried powders of low bulk density. Fabric washing powders containing nonionic surfactants as the major or sole detergent-active species have unacceptably high natural bulk densities (about 0.6 g/l). It has been found that the incorporation of certain alkenyl succinate salts into the crutcher slurry can reduce the bulk density of the resultant spray-dried powder. There is also a need for absorbents of low bulk density for manufacturing nonionic-surfactant based powders by dry-mixing routes and it has been found that suitable absorbents can be prepared by adding alkenyl succinate to a slurry of the chosen ingredients and spray-drying.

291768

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