基本信息:
- 专利标题: PRODUCTION OF DIARYL CARBONATE
- 申请号:JP15881497 申请日:1997-06-16
- 公开(公告)号:JPH115766A 公开(公告)日:1999-01-12
- 发明人: SUGURO YOSHIO , TSUCHISADA HIDETAKA , EGASHIRA TORU
- 申请人: MITSUBISHI CHEM CORP
- 专利权人: MITSUBISHI CHEM CORP
- 当前专利权人: MITSUBISHI CHEM CORP
- 优先权: JP15881497 1997-06-16
- 主分类号: B01J31/02
- IPC分类号: B01J31/02 ; C07B61/00 ; C07C68/02 ; C07C69/96
摘要:
PROBLEM TO BE SOLVED: To provide a method for producing, while suppressing hydrolysis during purification process, a diaryl carbonate free from hydrolyzing chlorine acting as a polymerization catalyst poisoning substance in the production of an aromatic polycarbonate through melt transesterification. SOLUTION: This method for producing a diaryl carbonate comprises as follows: a reaction mixture containing the diaryl carbonate formed by reaction of an aromatic monohydroxy compound with phosgene or an aryl chloroformate is contacted with an aqueous alkaline solution to effect neutralization to pH 7.0 to 9.5 followed by separation of the mixture into organic phase and aqueous phase, the organic phase being then contacted with warm water to effect separation into aqueous phase and organic phase again, and the objective diaryl carbonate is recovered from the latter organic phase.
公开/授权文献:
- JP4096375B2 Method of manufacturing a diaryl carbonate 公开/授权日:2008-06-04
信息查询:
EspacenetIPC结构图谱:
B | 作业;运输 |
--B01 | 一般的物理或化学的方法或装置 |
----B01J | 化学或物理方法,例如,催化作用、胶体化学;其有关设备 |
------B01J31/00 | 包含氢化物,配位配合物或有机化合物的催化剂 |
--------B01J31/02 | .含有机化合物或金属氢化物 |