| 发明名称 |
METHOD OF DIRECT BLUE SUBSTANTIVE DYE PREPARATION |
| 摘要 |
This direct blue substantive dye, on a base of triphenedioxazine, is prepared so that the oxidation cyclisation of the condensation product of chloramine yellow and 4-aminodiphenylamine-2-sulphonic acid by oleum occurs in the presence of iron salts, preferably ferrous sulphate, in a quantity of 0.1 to 10, preferably 1 to 5 % by weight per weight of the used condensation product.
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| 申请公布号 |
CS274142(B1) |
申请公布日期 |
1991.04.11 |
| 申请号 |
CS19890005818 |
申请日期 |
1989.10.13 |
| 申请人 |
JANECEK MIROSLAV ING. CSC.,CS;DVORAK JAN RNDR. CSC.,CS;KOPECNY RUDOLF ING.,CS;JESENSKY MILOS ING.,CS |
发明人 |
JANECEK MIROSLAV ING. CSC.,CS;DVORAK JAN RNDR. CSC.,CS;KOPECNY RUDOLF ING.,CS;JESENSKY MILOS ING.,CS |
| 分类号 |
C09B19/02;(IPC1-7):C09B35/025 |
主分类号 |
C09B19/02 |
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