Title:
PROCESSES FOR PURIFYING ORGANIC AMINES
Document Type and Number:
WIPO Patent Application WO/2022/241690
Kind Code:
A1
Abstract:
It is related to a process for purifying organic amines. The process comprises (a) providing an organic amine to a first vessel(5), the organic amine having a normal boiling point at one bar; (b) filling the first vessel(5) with inert gas; (c) heating the organic amine in the first vessel(5) to a sub-boiling temperature, wherein the sub-boiling temperature is at least 15°C less than the normal boiling point; (d) cooling the vapor from the first vessel(5) in a second vessel (20) to provide a liquid; and (e) contacting the organic amine with a resin polymer matrix, wherein the resin polymer matrix is embedded with an amino compound selected from the group consisting of iminodiacetic acid, aminomethylphosphonic acid or a combination thereof.
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Inventors:
JIANG QI (CN)
OHBA KAORU (JP)
LIU YUJUN (US)
KIM JONGCHEOL (KR)
CHEN XUE (US)
MU LI (CN)
OHBA KAORU (JP)
LIU YUJUN (US)
KIM JONGCHEOL (KR)
CHEN XUE (US)
MU LI (CN)
Application Number:
PCT/CN2021/094704
Publication Date:
November 24, 2022
Filing Date:
May 19, 2021
Export Citation:
Assignee:
DOW GLOBAL TECHNOLOGIES LLC (US)
DOW CHEMICAL KOREA LTD (KR)
JIANG QI (CN)
OHBA KAORU (JP)
LIU YUJUN (US)
KIM JONGCHEOL (KR)
CHEN XUE (US)
MU LI (CN)
DOW CHEMICAL KOREA LTD (KR)
JIANG QI (CN)
OHBA KAORU (JP)
LIU YUJUN (US)
KIM JONGCHEOL (KR)
CHEN XUE (US)
MU LI (CN)
International Classes:
C07C209/84
Foreign References:
CN109160876A | 2019-01-08 | |||
CN103102273A | 2013-05-15 | |||
CN104610061A | 2015-05-13 | |||
CN109251143A | 2019-01-22 | |||
JPH06173054A | 1994-06-21 | |||
CN103979497A | 2014-08-13 | |||
CN1669616A | 2005-09-21 | |||
CN103412065A | 2013-11-27 | |||
GB774789A | 1957-05-15 |
Attorney, Agent or Firm:
WU, FENG & ZHANG (CN)
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