Patent · US Active

Synthesis method of alkoxysilanes

US9751899B2 · kind B2 · utility

0Cited by

3References

17Claims

0Family size

Inventors

Richard M. Laine · Ann Arbor, US
Joseph C. Furgal · Ypsilanti, US
Vera Popova · Ann Arbor, US
Eongyu Yi · Ann Arbor, US

Key dates

Filing date	Apr 14, 2016
Grant date	Sep 5, 2017
Priority date	—
Expiry date	Apr 14, 2036

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC07F7/04
WIPO fieldOrganic fine chemistry
WIPO sectorChemistry

Abstract

The direct depolymerization of biogenic and other high surface area silica sources uses both simple and hindered diols to produce alkoxysilanes in one or two steps that can be separated and purified directly from the reaction mixture by distillation, extraction or filtration followed by solution modification and distillation or extraction. The alkoxysilanes can take the form of spirosiloxanes or simple alkoxysilanes or oligomers thereof. Thereafter they can be treated with acid to produce colloidal or precipitated silica or aerosolized and combusted to provide fumed silica without the intervention of SiCl4.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.