Xerogels and process for their preparation

Details Xerogels and process for their preparation Xerogels and process for their preparation

1996-06-20

1998-08-18

Bos, Steven

Chemistry of inorganic compounds

Silicon or compound thereof

Oxygen containing

C01B 3312

Patent

active

057955565

ABSTRACT:
Xerogels and a process for their preparation involving acidifying an aqueous waterglass solution, polycondensing the resulting silica by addition of a base, removing most of the water from the gel by washing the gel with an organic solvent, reacting the resulting gel with a silylation agent and then drying the silylated gel under subcritical conditions.

REFERENCES:
patent: 3652215 (1972-03-01), Aboutboul et al.
patent: 3652216 (1972-03-01), Krekeler et al.
patent: 3794713 (1974-02-01), Aboutboul et al.
patent: 3819811 (1974-06-01), Aboutboul et al.
patent: 4943425 (1990-07-01), Su et al.
patent: 5647962 (1997-07-01), Jansen et al.

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