| 摘要 |
<p>Disazo compounds of the formula IN WHICH R1 represents a sulphobenzene or sulphonaphthalene radical, B1, B2, E1 and E2 each represents a hydrogen atom, a low molecular alkyl or alkoxy radical, R2 represents a low molecular alkylene radical, X represents a functional radical, and -OR2-X is in the ortho- or para-position to the azo bridge, and process for the preparation of these dyestuffs. These dyestuffs provide natural and synthetic polyamides, e.g. wool and nylon, with dyeings of excellent general fastness properties.</p> |
