Process for manufacture of detergent powders

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

1977-11-25

1979-02-20

Willis, Jr., P.E.

Compositions

Compositions containing a single chemical reactant or plural...

Organic reactant

252 89R, 252527, 252546, 252DIG1, C11D 3075, C11D 183, C11D 1102

Patent

active

041406508

ABSTRACT:
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.

REFERENCES:
patent: 3579453 (1971-05-01), Dupre et al.
patent: 3741913 (1973-06-01), Waag
patent: 3844969 (1974-10-01), Griffiths et al.
patent: 3849327 (1974-11-01), DiSalvo et al.
patent: 3962149 (1976-06-01), Chirash et al.

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