Drying and gas or vapor contact with solids – Process – Freeze-drying
Patent
1988-12-08
1990-08-21
Nucker, Christine M.
Drying and gas or vapor contact with solids
Process
Freeze-drying
23303, 423332, 423333, C01B 3302
Patent
active
049503103
ABSTRACT:
X-ray crystalline sodium silicates having a sheet structure and an SiO.sub.2 :Na.sub.2 O molar ratio of 1.9 to 3.5 are prepared by dissolving an X-ray crystalline sodium silicate having a sheet structure and an SiO.sub.2 /Na.sub.2 O molar ratio of 1.9:1 to 3.5:1 in water and evaporating the solution at temperatures of 20.degree. to 445.degree. C.
For the preparation of detergents or cleaners, a mixture of surfactants and builders, which may also contain fillers, bleaching agents, bleach activators and enzymes, is made into a paste with water, mixed with an X-ray crystalline sheet sodium silicate having an SiO.sub.2 /Na.sub.2 O molar ratio of 1.9:1 to 3.5:1, mixed thoroughly and then spray-dried.
REFERENCES:
patent: 4166039 (1979-08-01), Wise
patent: 4478735 (1984-10-01), Yazaki et al.
patent: 4524010 (1985-06-01), Reuter et al.
patent: 4585642 (1986-04-01), Rieck
patent: 4632815 (1986-12-01), Valyocsik
patent: 4664839 (1987-05-01), Rieck
patent: 4737306 (1988-04-01), Wichelhaus et al.
A. Willgallis et al., Glastechn. Ber. 37, 194-200 (1964).
Gmelins Handbuch der Anorganischen Chemie, 8th Ed., Part C ("Phosphorus"), System No. 16, Vergal Chemie, Weinheim, 1965, p. 259.
K. Beneke et al., Am. Minerol., 62, 763-771 (1977).
Gohla Werner
Ott Willy
Rieck Hans-Peter
Schott Martin
Hoechst Aktiengesellschaft
Nucker Christine M.
Steffe Eric
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