Preparation of hydrophobic silicon dioxide

Details Preparation of hydrophobic silicon dioxide Preparation of hydrophobic silicon dioxide

1978-11-30

1980-03-04

Vertiz, O. R.

Compositions: coating or plastic

Materials or ingredients

Miscellaneous

427220, 428405, 260 4215, 423275, C09C 312, C04B 3144

Patent

active

041915879

ABSTRACT:
This invention relates to a process for preparing hydrophobic silicon dioxide which comprises treating silicon dioxide having a surface area of at least 50 m.sup.2 /g with an organosilicon compound containing from 2 to 4 silicon atoms per molecule, in which at least 2 hydrocarbon radicals are bonded to each silicon atom, and any silicon valences which are not satisfied by hydrocarbon radicals are satisfied by siloxane oxygen atoms and at least one tin compound containing Sn-bonded halogen and/or organic radicals.

REFERENCES:
patent: 3132961 (1964-05-01), Pierpoint et al.
patent: 3677784 (1972-07-01), Nitzsche et al.
patent: 3931262 (1976-01-01), Wirth et al.
patent: 3948676 (1976-04-01), Laufer
patent: 4005254 (1977-01-01), Mackenzie, Jr.
patent: 4007050 (1977-02-01), Laufer et al.
patent: 4068024 (1978-01-01), Laufer

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