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:
Jun. 16, 2020
Filed:
Mar. 30, 2018
Petrochina Company Limited, Beijing, CN;
Jianhui Luo, Beijing, CN;
Bo Jiang, Beijing, CN;
Lipeng He, Beijing, CN;
Pingmei Wang, Beijing, CN;
Baoliang Peng, Beijing, CN;
Jie Yang, Beijing, CN;
Bin Ding, Beijing, CN;
Yuanyang Li, Beijing, CN;
Xiangfei Geng, Beijing, CN;
PetroChina Company Limited, Beijing, CN;
Abstract
The present invention provides a nano-silica dispersion having amphiphilic properties and a double-particle structure and its production method. The production method comprises: producing a lipophilically modified nano-silica alcosol which is denoted as a first reaction solution by adding a silane coupling agent containing a lipophilic group to a nano-silica alcosol as a raw material; producing a hydrophilically modified nano-silica alcosol which is denoted as a second reaction solution by adding a silane coupling agent containing a hydrophilic group into a nano-silica alcosol as a raw material; producing the nano-silica dispersion having amphiphilic properties and a double-particle structure by adding 3-aminopropyltriethoxysilane to the first reaction solution, stirring, then mixing the resultant with the second reaction solution. The present invention further provides a nano-silica dispersion having amphiphilic properties and a double-particle structure produced by the above production method. It has both hydrophilic and lipophilic properties, and has the double-particle structure, with a particle size of less than 100 nm. The production process is simple and low in cost.