Process for preparing hydrophobic silicon dioxide

Details Process for preparing hydrophobic silicon dioxide Process for preparing hydrophobic silicon dioxide

1974-08-23

1976-04-27

Shaver, Paul F.

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

2604488AS, C07F 704, C07F 708, C07F 710, C07F 718

Patent

active

039534871

ABSTRACT:
Process for preparing hydrophobic SiO.sub.2 by reacting solid SiO.sub.2 of finest particle size with organosilicon compounds while subjecting the reaction mixture to a mechanical impact treatment which will at the same time result in a comminution of the SiO.sub.2 particles as well as of their aggregates, said process comprising incorporation to the reaction mixture, in addition to the water adsorbed by the SiO.sub.2, an amount of 0.3 to 3% by weight of water calculated on the weight of the SiO.sub.2.

REFERENCES:
patent: 2802850 (1957-08-01), Wetzel

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