The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 05, 2017
Filed:
Apr. 14, 2016
Richard M. Laine, Ann Arbor, MI (US);
Joseph C. Furgal, Ypsilanti, MI (US);
Vera Popova, Ann Arbor, MI (US);
Eongyu Yi, Ann Arbor, MI (US);
Richard M. Laine, Ann Arbor, MI (US);
Joseph C. Furgal, Ypsilanti, MI (US);
Vera Popova, Ann Arbor, MI (US);
Eongyu Yi, Ann Arbor, MI (US);
Other;
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 SiCl.