Process for the preparation of crystalline sodium silicates

Details Process for the preparation of crystalline sodium silicates Process for the preparation of crystalline sodium silicates

1998-02-23

2000-08-08

Straub, Gary P.

Chemistry: physical processes

Physical processes

Crystallization

23302R, 23302T, 423332, 423333, B01D 900, C01D 130, C01D 3300, C01D 3320, C01D 3332

Patent

active

060995955

ABSTRACT:
The invention relates to a process for the preparation of crystalline sodium silicates having a sheet structure and high .delta. phase content from water glass, which has been prepared hydrothermally, by dehydration of the water glass and subsequent crystallization at elevated temperature, which comprises treating the water glass at temperatures of from 50 to 140.degree. C. prior to dehydration.

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European Search Report.
Alexander Willgallis et al.: "Zur Polymorphie des Na2Si205" Glastechnische Berichte., Apr. 1964, Frankfurt DE Seiten 194-200, XP002066304.

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