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Title:
MANUFACTURING METHOD OF 1,2-DICHLOROHEXAFLUOROCYCLOPENTENE
Document Type and Number:
WIPO Patent Application WO/2017/181566
Kind Code:
A1
Abstract:
Disclosed is a manufacturing method of 1,2-dichlorohexafluorocyclopentene. The first reaction uses dicyclopendatiene as a starting material and nitrogen gas or another inert gas as a diluting agent in a gas-phase thermal cracking reaction to obtain cyclopentadiene. The second reaction uses cyclopentadiene as a starting material in a liquid-phase chlorination reaction with chlorine gas to obtain 1,2,3,4-tetrachlorocyclopentane. The third reaction uses 1,2,3,4-tetrachlorocyclopentane as a starting material in a gas-phase chlorination and fluorination reaction with hydrogen fluoride and chlorine gas in the presence of a chromium-based catalyst to obtain 1,2-dichlorohexafluorocyclopentene. The method uses easily acquired starting materials and a stable fluorination catalyst, provides a high yield for a target product, and is applicable for large-scale continuous gas-phase production of 1,2-dichlorohexafluorocyclopentene.

Inventors:
QUAN, Hengdao (No.5 Zhongguancun South Road, Haidian District, Beijing 1, 100081, CN)
LIU, Dongpeng (No.5 Zhongguancun South Road, Haidian District, Beijing 1, 100081, CN)
JIA, Xiaoqing (No.5 Zhongguancun South Road, Haidian District, Beijing 1, 100081, CN)
ZHOU, Xiaomeng (No.5 Zhongguancun South Road, Haidian District, Beijing 1, 100081, CN)
Application Number:
CN2016/095975
Publication Date:
October 26, 2017
Filing Date:
August 19, 2016
Export Citation:
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Assignee:
BEIJING YUJI SCIENCE & TECHNOLOGY CO., LTD. (No.5 Zhongguancun South Road, Haidian District, Beijing 1, 100081, CN)
ZEON CORPORATION (6-2 Marunouchi 1-chome, Chiyoda-ku, Tokyo, 100-8246, JP)
International Classes:
C07C17/25; B01J23/30; C07C17/21; C07C23/08
Foreign References:
JP2002241324A2002-08-28
CN101306980A2008-11-19
CN1651137A2005-08-10
CN104907063A2015-09-16
CN103570490A2014-02-12
Attorney, Agent or Firm:
PATENTSINO IP FIRM (Suite 413, Shang Fang Building No.27 Middle Road of North Third Ring Road, Xicheng District, Beijing 9, 100029, CN)
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