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:
May. 03, 2022
Filed:
Oct. 10, 2018
Zhejiang University, Zhejiang, CN;
Zhejiang Huangma Technology Co., Ltd., Zhejiang, CN;
Zhirong Chen, Hangzhou, CN;
Hong Yin, Hangzhou, CN;
Xinrong Wang, Shaoxing, CN;
Yifeng Jin, Shaoxing, CN;
Xingjun Zhao, Shaoxing, CN;
Nan Dong, Shaoxing, CN;
Meijun Zhang, Shaoxing, CN;
Yuanrong Yu, Shaoxing, CN;
Yuejiang Zhang, Shaoxing, CN;
ZHEJIANG UNIVERSITY, Hangzhou, CN;
ZHEJIANG HUANGMA TECHNOLOGY CO., LTD., Shaoxing, CN;
Abstract
The present invention relates to a method for preparing 2-methylallyl chloride from 1,2-dichloroisobutane. The method is characterized in that 1,2-dichloroisobutane and a sodium hydroxide aqueous solution are used as raw materials; reactive rectification is performed in a combined rectifying tower to eliminate hydrogen chloride so as to obtain 2-methylallyl chloride. A plate tower is provided at the lower part of the combined rectifying tower; a packing tower is provided at the upper part of the combined rectifying tower; an inner reflux condenser is provided at the top of the combined rectifying tower. The sodium hydroxide aqueous solution is added from a first plate of the plate tower; and 1,2-dichloroisobutane is added from the middle part of the plate tower. The method has the advantages that the raw material 1 and 1,2-dichloroisobutane is fully converted; the selectivity of the 2-methylallyl chloride is high.