发明名称 |
Herstellung von Bisphenol-A |
摘要 |
An integrated process for the preparation and recovery of BPA in pure form utilizes a series of steps to crystallize pure BPA of improved color stability and recycle separated impurities to improve overall yields. The principal impurity recycled to the process is o,p-BPA which functions as a color stabilizer in the product and in polycarbonate resins prepared from the BPA. <IMAGE> |
申请公布号 |
DE69709003(D1) |
申请公布日期 |
2002.01.24 |
申请号 |
DE1997609003 |
申请日期 |
1997.09.02 |
申请人 |
GENERAL ELECTRIC CO., SCHENECTADY |
发明人 |
CIPULLO, MICHAEL JOHN |
分类号 |
C07C37/20;C07B61/00;C07C37/74;C07C37/84;C07C37/86;C07C39/16 |
主分类号 |
C07C37/20 |
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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