发明名称 |
Process for the production of dustfree granules of dyes and optical brighteners |
摘要 |
Described is a process for the production of solid dustfree preparations of water-soluble dyes and optical brighteners, which process comprises subjecting the pulverulent dyes or optical brighteners, together with a melt or a solution of ethylene carbonate or propylene carbonate, to a dynamic treatment. The preparations obtained have in particular the advantage that the dust-binding effect is retained undiminished over a long period of time, and that they are completely soluble when used in aqueous baths of dyes or optical brighteners.
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申请公布号 |
US4227880(A) |
申请公布日期 |
1980.10.14 |
申请号 |
US19780896417 |
申请日期 |
1978.04.14 |
申请人 |
CIBA-GEIGY CORPORATION |
发明人 |
HOHENEGGER, HELMUT;BAUMANN, HANSPETER;BUECHEL, URS |
分类号 |
C09B67/42;C09B67/00;(IPC1-7):D06P1/64;C09K11/02 |
主分类号 |
C09B67/42 |
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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