发明名称 |
Method for the preparation of ultra-pure bisphenol A and the use thereof |
摘要 |
The invention relates to a method for the purification by distillation of p,p-bisphenol A from the melt. The p,p-bisphenol A melt thus obtained is highly heat-stable, stable in storage and colour-stable, is free from high-boiling components and no longer contains any surface-active or non-distillable metal, salt, acid or polymer components and no sulphur-containing components; o,p-BPA and phenol are removed and the low-boiling components are scarcely detectable.
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申请公布号 |
US5696295(A) |
申请公布日期 |
1997.12.09 |
申请号 |
US19950418583 |
申请日期 |
1995.04.06 |
申请人 |
BAYER AG |
发明人 |
WULFF, CLAUS;HALLENBERGER, KASPAR;STEUDE, HEINRICH;MEURER, KURT-PETER;VAN OSSELAER, TONY;HINZ, JUERGEN;QUAEYHAEGENS, FRANK;VAES, JOHAN;HOOFTMAN, IGNACE |
分类号 |
C07C37/74;C07C39/16;C08G64/06;(IPC1-7):C07C37/74;C07C39/12 |
主分类号 |
C07C37/74 |
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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