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1. (WO2017181517) MANUFACTURING METHOD OF 1,2-DICHLOROHEXAFLUOROCYCLOPENTENE

Pub. No.:    WO/2017/181517    International Application No.:    PCT/CN2016/086825
Publication Date: Fri Oct 27 01:59:59 CEST 2017 International Filing Date: Fri Jun 24 01:59:59 CEST 2016
IPC: C07C 17/25
C07C 17/21
C07C 23/08
B01J 23/30
B01J 23/28
B01J 23/26
Applicants: BEIJING YUJI SCIENCE & TECHNOLOGY CO., LTD.
北京宇极科技发展有限公司
ZEON CORPORATION
日本瑞翁株式会社
Inventors: QUAN, Hengdao
权恒道
LIU, Dongpeng
刘冬鹏
ZHOU, Xiaomeng
周晓猛
JIA, Xiaoqing
贾晓卿
Title: MANUFACTURING METHOD OF 1,2-DICHLOROHEXAFLUOROCYCLOPENTENE
Abstract:
The present invention relates to a manufacturing method of 1,2-dichlorohexafluorocyclopentene. The manufacturing method of 1,2-dichlorohexafluorocyclopentene comprises the following reaction steps: (1) using cyclopentadiene as a starting material in a liquid-phase reaction with chlorine, and obtaining tetrachlorocyclopentane; and (2) using tetrachlorocyclopentane as a starting material in a gas-phase chlorination and fluorination reaction with hydrogen fluoride and chlorine gas and in the presence of a fluorination catalyst to obtain 1,2-dichlorohexafluorocyclopentene, wherein the fluorination catalyst is a chromium-based catalyst. The technical solution provided in the invention uses an easily acquired raw material. A highly stable fluorination catalyst with high catalytic activity is also used, therefore making the solution applicable in large scale production of 1,2-dichlorohexafluorocyclopentene.