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:
Feb. 25, 2025
Filed:
Aug. 09, 2022
Guangzhou Huifu Research Institute Co., Ltd., Guangdong, CN;
Hubei Huifu Nanomaterial Co., Ltd., Hubei, CN;
Xianjian Duan, Guangdong, CN;
Chunlei Wu, Guangdong, CN;
Yuelin Wang, Guangdong, CN;
Shiyu Xu, Guangdong, CN;
Chenggang Wang, Hubei, CN;
GUANGZHOU HUIFU RESEARCH INSTITUTE CO., LTD., Guangdong, CN;
HUBEI HUIFU NANOMATERIAL CO., LTD., Hubei, CN;
Abstract
The present disclosure relates to a combined treatment method for surface modification of fumed silica, which comprises the following steps: (1) two sets of modification devices are used to jointly treat fumed silica; the fumed silica is modified with a modifier in the reaction furnace of each set of modification devices to obtain two groups of modified fumed silica and exhaust gas respectively; (2) the exhaust gas obtained in step (1) is separated respectively to obtain unreacted modifier and by-products, and the obtained by-products are input into the reaction furnace of the other set of modification devices as reaction assistants to participate in the modification reaction; and the obtained unreacted modifiers are returned to the reaction furnace of the original modification device for repeated use.