Detergent powders and process for their preparation

Compositions – Water-softening or purifying or scale-inhibiting agents

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Details

252174, 25217425, 252540, C11D 310

Patent

active

051512084

ABSTRACT:
Detergent powders built with sodium carbonate and having improved flow properties are prepared by a process in which a selected acid, for example, succinic acid or alkylbenzene sulphonic acid, is added to a slurry in order to transform sodium carbonate into needle-like crystals of sodium sedquicarbonate, and the slurry is then dried, preferably spray-dried, to form a powder.

REFERENCES:
patent: 4274975 (1981-06-01), Corkill et al.
patent: 4368134 (1983-01-01), Kaeser
patent: 4460491 (1984-07-01), Liem
patent: 4861503 (1989-08-01), Hollingsworth et al.
patent: 4923628 (1990-05-01), Appel et al.

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