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. 01, 2015
Filed:
Jul. 29, 2011
LI Liu, Beijing, CN;
Fa Zhong Zhang, Beijing, CN;
Ying Yan Mao, Beijing, CN;
Yan LI, Beijing, CN;
Shui HU, Beijing, CN;
Shi Peng Wen, Beijing, CN;
LI Qun Zhang, Beijing, CN;
Li Liu, Beijing, CN;
Fa zhong Zhang, Beijing, CN;
Ying yan Mao, Beijing, CN;
Yan Li, Beijing, CN;
Shui Hu, Beijing, CN;
Shi peng Wen, Beijing, CN;
Li qun Zhang, Beijing, CN;
Beijing University of Chemical Technology, Beijing, CN;
Abstract
The invention relates to a method for preparing silica modified by a silane coupling agent. The method comprises the following steps: preparing a kind of coupling agent sol solution by mixing the solvent, water, catalyst and coupling agent; uniformly dispersing silica into the sol solution by means of ultrasonic dispersion or shear dispersion to achieve a turbid solution with uniform dispersion and ideal particle size; and then stirring the turbid solution at a constant speed to make the coupling agent sol reacting with silica to prepare highly hydrophobic silica modified by the coupling agent through controlling the temperature and reaction time. The coupling agent sol solution is obtained by a sol-gel process and silica is uniformly dispersed in the coupling agent sol solution through combined action of various dynamic means to ensure the sufficient reaction between silica and coupling agent, thus to obtain silica modified by the coupling agent.