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Patent Searching and Data


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.

Inventors:
JIANG QI (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:
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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)
International Classes:
C07C209/84
Foreign References:
CN109160876A2019-01-08
CN103102273A2013-05-15
CN104610061A2015-05-13
CN109251143A2019-01-22
JPH06173054A1994-06-21
CN103979497A2014-08-13
CN1669616A2005-09-21
CN103412065A2013-11-27
GB774789A1957-05-15
Attorney, Agent or Firm:
WU, FENG & ZHANG (CN)
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