Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1989-04-28
1991-07-09
Lieberman, Paul
Compositions
Water-softening or purifying or scale-inhibiting agents
25217413, 25217414, 25217421, 252559, 252DIG1, C11D 1100, C11D 166, C11D 312, C11D 1706
Patent
active
050303791
ABSTRACT:
A process for the preparation of a free-flowing detergent powder comprises the steps of (i) mixing a detergent base powder with finely divided zeolite in a weight ratio of the zeolite (hydrated basis) to the base powder of from 0.13:1 to 0.40:1, whereby the small zeolite particles are adhered to the outer surface of the larger base powder particles, and (ii) spraying a liquid composition comprising nonionic surfactant onto the mixture formed in step (i), at a weight ratio of nonionic surfactant to alkali metal aluminosilicate of at least 0.25:1. This improves flow properties, increases bulk density, and improves dispensing in an automatic washing machine.
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Knight Peter C.
Taylor Thomas
Beadles-Hay A.
Farrell J. J.
Lever Brothers Company Division of Conopco, Inc.
Lieberman Paul
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