Compositions – Compositions containing a single chemical reactant or plural... – Organic reactant
Patent
1985-06-28
1987-04-28
Lieberman, Paul
Compositions
Compositions containing a single chemical reactant or plural...
Organic reactant
252109, 252135, 252156, 252174, 25217416, 25217421, 25217422, 25217425, 252DIG1, 252DIG17, 159 404, B01J 204, C11D 3075, C11D 1102, C11D 1706
Patent
active
046612815
ABSTRACT:
A free-flowing washing powder of low specific gravity (powder density 300 to 500 g/l) and containing large quantities of nonionic surfactants is produced by spray-drying an aqueous suspension containing on the spray-dried basis (A) from 15 to 30% by weight of nonionic tensides, (B) from 8 to 18% by weight of sodium silicate, (C) from 25 to 55% by weight of finely crystalline zeolite, (D) from 0 to 25% by weight of sodium tripolyphosphate, (E) no more than 3% by weight of soap and synthetic anionic tensides, and from 35 to 50% by weight of water. The suspension, which has a temperature of from 75.degree. C. to 90.degree. C., is sprayed through nozzles into a drying zone under a pressure of from 35 to 100 bar. The drying gas flowing in countercurrent has an entry temperature of from 160.degree. C. to 240.degree. C. and an exit temperature of from 80.degree. C. to 95.degree. C. The spray-dried product contains from 9 to 16% by weight of water which is removable at a drying temperature of 130.degree. C.
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Layman, Patricia L., "For Detergent Producers, the Question is, Which?" Chemical Week, Jul. 23, 1980.
Reuter Herbert
Seiter Wolfgang
Wegener Ingo
Grandmaison Real J.
Henkel Kommanditgesellschaft auf Aktien
Lieberman Paul
Millson Jr. Henry E.
Skaling L.
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