Title:
A PROCESS FOR PREPARATION OF POLYMETHYLENE POLYPHENYL POLYAMINE
Document Type and Number:
WIPO Patent Application WO/2008/122148
Kind Code:
A1
Abstract:
A process for preparation of polymethylene polyphenyl polyamine comprises the following steps: a. mixing and reacting aniline and hydrochloric acid to obtain aniline hydrochloride; b. feeding the aniline hydrochloride to recycle tube and mixing said aniline hydrochloride with the recycling liquid from condensating agitating kettle, then cooling the obtained mixture by heat exchanger; c. feeding the cooled mixture and formaldehyde solution to super-gravitational rotating bed reactor separately, and then mixing and conducting pre-condensating reaction; d. feeding the feed discharged from super-gravitational rotating bed reactor to condensatingagitating kettle to conduct pre-condensating reaction and molecular rearrangement reaction; feeding a part of reaction mixture discharged from condensating agitating kettle to recycle tube as recycling liquid, and discharging another part of reaction mixture as product.
Inventors:
DING JIANSHENG (CN)
CHEN JIANFENG (CN)
ZHANG HONGKE (CN)
ZOU HAIKUI (CN)
HUA WEIQI (CN)
ZHANG PENGYUAN (CN)
SUN SHUCHANG (CN)
CHU GUANGWEN (CN)
XU LIMIN (CN)
CHEN JIANFENG (CN)
ZHANG HONGKE (CN)
ZOU HAIKUI (CN)
HUA WEIQI (CN)
ZHANG PENGYUAN (CN)
SUN SHUCHANG (CN)
CHU GUANGWEN (CN)
XU LIMIN (CN)
Application Number:
PCT/CN2007/001121
Publication Date:
October 16, 2008
Filing Date:
April 06, 2007
Export Citation:
Assignee:
NINGO WANHUA POLYURETHANES CO (CN)
UNIV BEIJING CHEMICAL (CN)
DING JIANSHENG (CN)
CHEN JIANFENG (CN)
ZHANG HONGKE (CN)
ZOU HAIKUI (CN)
HUA WEIQI (CN)
ZHANG PENGYUAN (CN)
SUN SHUCHANG (CN)
CHU GUANGWEN (CN)
XU LIMIN (CN)
UNIV BEIJING CHEMICAL (CN)
DING JIANSHENG (CN)
CHEN JIANFENG (CN)
ZHANG HONGKE (CN)
ZOU HAIKUI (CN)
HUA WEIQI (CN)
ZHANG PENGYUAN (CN)
SUN SHUCHANG (CN)
CHU GUANGWEN (CN)
XU LIMIN (CN)
International Classes:
C07C209/18; C07C211/55; C08G12/08
Foreign References:
| CN1765875A | 2006-05-03 | |||
| CN1507940A | 2004-06-30 | |||
| US6720455B2 | 2004-04-13 | |||
| US6673970B1 | 2004-01-06 | |||
| US3517062A | 1970-06-23 | |||
| US3260751A | 1966-07-12 | |||
| CN95107423A | ||||
| CN92100093A | ||||
| CN91109225A | ||||
| CN95105343A |
Other References:
JIANFENG CHEN ET AL.: "The high gravity technology and its application - a new generation of reaction and separation tcchnology", CHEMICAL INDUSTRY PRESS
Attorney, Agent or Firm:
BOSS & YOUNG PATENT AND TRADEMARK LAW OFFICE (Tower A Bldg. No.1 GT International Center,Jia 3 Yongandongli, Jianguomenwai Avenue,Chaoyang District, Beijing 2, CN)
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