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:
Mar. 05, 2024
Filed:
Dec. 21, 2020
Fundación Tecnalia Research & Innovation, Derio-Bizkaia, ES;
Eunate Goiti Ugarte, Derio-Bizkaia, ES;
Marta Ocejo Lopez de Guereña, Derio-Bizkaia, ES;
FUNDACIÓN TECNALIA RESEARCH & INNOVATION, Derio-Bizkaia, ES;
Abstract
The present invention relates to a process for preparing waterglass-based silica aerogels, wherein the process comprises (a) subjecting a certain amount of a vinyltrialcoxysilane to hydrolysis in the presence of water and an inorganic acid under stirring conditions to produce a hydrolyzed vinyltrialcoxysilane solution; (b) treating a waterglass solution with an acidic cationic-exchange resin to produce a silicic acid solution; (c) forming a sol phase by contacting the hydrolyzed vinylalcoxysilane solution with the silicic acid solution; (d) forming a gel phase by adjusting the pH of the sol phase to a value in the range of from 4 to 6; and (e) subjecting the gel phase to supercritical drying to produce an aerogel. The present invention is also related to waterglass-based silica aerogels obtained by the process according to the invention, which are functionalized with vinyl groups.