Compositions – Water-softening or purifying or scale-inhibiting agents
Patent
1991-03-26
1992-09-29
Van Le, Hoa
Compositions
Water-softening or purifying or scale-inhibiting agents
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.
Huijben Gregorius J.
Liem Seeng D
Paoli Michele E.
van Kralingen Cornelis G.
Le Hoa Van
Lever Brothers Company Division of Conopco, Inc.
McGowan, Jr. Gerard J.
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