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发明名称
PROCESS FOR THE FRACTIONAL DESUBLIMATION OF DIANHYDRIDE OF 1,2,4,5-BENZENETETRACARBOXYLIC ACID
摘要
申请公布号
DE2860988(D1)
申请公布日期
1981.11.19
申请号
DE19782860988
申请日期
1978.11.20
申请人
CHEMISCHE WERKE HULS AG
发明人
HAFERKORN, HERBERT
分类号
B01D7/02;C07D307/00;C07D493/04;(IPC1-7):C07D493/04
主分类号
B01D7/02
代理机构
代理人
主权项
地址
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