发明名称 |
Process for the neutralization of residual acid species in crude dihydric phenols |
摘要 |
The present invention relates to a method of neutralizing residual acid species in crude dihydric phenol comprising the step of introducing a thermally stable organic base selected from the group consisting of tetraalkyl phosphonium hydroxides, tetraorganophosphonium carboxylic acid salts, or a mixture thereof into the crude dihydric phenol.
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申请公布号 |
US2002143134(A1) |
申请公布日期 |
2002.10.03 |
申请号 |
US20020683866 |
申请日期 |
2002.02.25 |
申请人 |
SMIGELSKI PAUL MICHAEL;BURNELL TIMOTHY BRYDON;MCCLOSKEY PATRICK JOSEPH |
发明人 |
SMIGELSKI PAUL MICHAEL;BURNELL TIMOTHY BRYDON;MCCLOSKEY PATRICK JOSEPH |
分类号 |
C07C29/94;C07C37/86;C07C39/16;(IPC1-7):C08G64/00 |
主分类号 |
C07C29/94 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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