发明名称 |
PROCESS FOR PREPARING LITHIUM SALTS OF ANIONIC DYES HAVING PREFERABLY FIBER-REACTIVE GROUPS |
摘要 |
<p>Lithium salts of anionic dyes are prepared by first converting another salt of this anionic dye in aqueous solution or suspension by means of a compound which releases calcium ions into the water-insoluble or sparingly water-soluble calcium salt of the dye, which is separated from the aqueous medium and is then converted to an aqueous suspension by treatment with lithium sulfate or lithium hydrogensulfate or a mixture thereof in an equivalent amount of each or in an excess of up to 10% into its lithium salt.</p> |
申请公布号 |
IN164645(B) |
申请公布日期 |
1989.04.29 |
申请号 |
IN1985CA82819 |
申请日期 |
1985.11.21 |
申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
MEININGER FRITZ;SCHLAFER LUDWIG |
分类号 |
C09B62/02;C09B62/44;C09B69/02;(IPC1-7):C09B45/12 |
主分类号 |
C09B62/02 |
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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