发明名称 |
BLUE DYE WITH PARTICULARLY HIGH PURITY AND POSITIVE TRIBOELECTRIC CONTROL EFFECT |
摘要 |
The dye base sulphate of formula (I) is produced with a residual amine conte nt of less than 2000 ppm, as determined by HPLC, by precipitation of the dye base, made by Friedel-Crafts alkylation, substitution and hydrolysis, as the dye base sulphate and a) taken up in water and subjecting to a first steam distillation then filtered and optionally dried at 50 to 180 ~C, b) the pressed cake is treated with water or the optionally dried dye base sulphate is moistened with water, c) subjected to a further steam distillation and filtration and d) dried at 50 to 180 ~C.
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申请公布号 |
CA2500803(A1) |
申请公布日期 |
2004.05.21 |
申请号 |
CA20032500803 |
申请日期 |
2003.10.21 |
申请人 |
CLARIANT GMBH |
发明人 |
MICHEL, EDUARD;BAUR, RUDIGER;MACHOLDT, HANS-TOBIAS;KOHL, NORBERT |
分类号 |
C09B11/12;C09B67/54;C09D5/03;C09D5/06;C09D7/00;C09D11/00;G03G9/09;(IPC1-7):C09D11/00 |
主分类号 |
C09B11/12 |
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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