Title:
PREPARATION METHOD FOR BIS(2,4,6-TRIMETHYLBENZOYL)PHENYLPHOSPHINE OXIDE
Document Type and Number:
WIPO Patent Application WO/2022/088569
Kind Code:
A1
Abstract:
A preparation method for bis(2,4,6-trimethylbenzoyl)phenylphosphine oxide. In the preparation method, a specific ether compound is added as a complexing agent in the reaction of sodium sand and phenylphosphine dichloride. The addition of the complexing agent can effectively inhibit the formation of phenylphosphine sodium polyphosphide and promote the generation of phenylphosphine sodium, and no phenylphosphine hydrogen process is required, thereby reducing the process cost, and improving the safety of process procedures. In addition, since the complexing agent is a polar aprotic solvent, and is used in a small amount, the preparation method can reduce the content of organic matters in wastewater as compared with a conventional method of using a protic solvent as an activating agent or a proton source, and thus has certain environmental benefits and saves costs.
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Inventors:
ZHAO GUOFENG (CN)
ZHANG QI (CN)
MAO GUIHONG (CN)
ZHANG JIANFENG (CN)
WU RUI (CN)
ZHANG QI (CN)
MAO GUIHONG (CN)
ZHANG JIANFENG (CN)
WU RUI (CN)
Application Number:
PCT/CN2021/078581
Publication Date:
May 05, 2022
Filing Date:
March 02, 2021
Export Citation:
Assignee:
TIANJIN JIURI NEW MAT CO LTD (CN)
International Classes:
C07F9/53
Foreign References:
| CN112159429A | 2021-01-01 | |||
| CN112175005A | 2021-01-05 | |||
| CN112094296A | 2020-12-18 | |||
| CN1823077A | 2006-08-23 | |||
| CN1486986A | 2004-04-07 | |||
| CN110734461A | 2020-01-31 | |||
| CN103288873A | 2013-09-11 | |||
| CN105348322A | 2016-02-24 | |||
| CN1328564A | 2001-12-26 |
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