Spray-dried particles contg. zeolite for detergent use - contg. bentonite, builder and little or no soluble silicate

摘要

Spray-dried particles ("beads") for use as or in detergent compsns. comprise (a) 5-60 wt.% of a water-softening aluminosilicate; (b) 2-40 wt.% of bentonite contg. sufficient moisture to facilitate its dispersion so as to inhibit deposition of the aluminosilicate on linen during washing; (c) 5-60 wt.% of one or more water-soluble builders; (d) 0-30 wt.% of a water-soluble synthetic organic detergent; and (e) 0-5 wt.% of a water-soluble silicate. The particles pref. have a bulk density of 0.2-0.9 (esp. 0.2-0.8) g/cc and a particle size of 0.149-2.00 mm. Component (a) is pref. a hydrated A zeolite with an H2O content of 15-25 wt.% and a Ca exchange capacity of 200-400 meq/g. The particles are free-flowing and have a reduced tendency to deposit solids owing to the fact that they contain bentonite and little or no soluble silicate. -