发明名称 |
Hydrates of the disodium salt or dipotassium salt of 4,4'-bis(2-sulfostyryl)biphenyl |
摘要 |
The present invention relates to novel hydrates of the disodium salt or dipotassium salt of 4,4'-bis(2-sulfostyryl)biphenyl characterized by their water of hydration content, to the crystal forms associated therewith, characterized by their X-ray diffraction pattern, to processes for the preparation, and to their use for the preparation of concentrated formulations of fluorescent whitening agents.
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申请公布号 |
US5437818(A) |
申请公布日期 |
1995.08.01 |
申请号 |
US19930081597 |
申请日期 |
1993.06.23 |
申请人 |
CIBA-GEIGY CORPORATION |
发明人 |
EHLIS, THOMAS;GEOFFROY, ANDRE;MARTI, ERWIN;ZELGER, JOSEF;FRANKE, KARLHEINZ;BURKHARD, ANDREAS |
分类号 |
C07C303/32;C07C303/42;C07C309/32;C08K5/41;C08K5/42;C11D3/42;C11D7/34;C11D7/54;D06L3/12;(IPC1-7):C09K11/06;C07C309/01 |
主分类号 |
C07C303/32 |
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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