Method for the production of a suds-stabilized silicone-containi

Details Method for the production of a suds-stabilized silicone-containi Method for the production of a suds-stabilized silicone-containi

1982-06-09

1983-12-06

Kittle, John E.

Compositions

Water-softening or purifying or scale-inhibiting agents

10628713, 252173, 25217415, 25217421, 4272133, C11D 312, C11D 936, C11D 1102, C11D 1700

Patent

active

044192606

ABSTRACT:
In the production of a spray-dried detergent containing a silicone/silica mixture as an antifoaming agent, the aqueous silicone-free detergent slurry (A) is combined in the range of the spray nozzle or in the pressure line leading to the spray nozzle under conditions whereby substantial mixing is avoided in order to avoid loss of the antifoaming action, with an aqueous dispersion (B) which contains the liquid antifoaming silicone agent, which is present in a particle size of from 0.5 to 40 .mu.m, as well as a film-forming, high-molecular-weight polymer which is soluble or swellable in water, and which is suitable for the formation of microcapsules, preferably a cellulose ether. The microcapsules are formed during the combination of the mixture (A) with the dispersion (B) at the time of spraying, or in the dispersion itself, if electrolyte salts were added to the latter before spraying.

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