| 摘要 |
1,251,319. Stilbene-azo dye. FARBENFABRIKEN BAYER A.G. 26 June, 1970 [28 June 1969], No. 31140/70. Heading C4P. The invention comprises the azo dye of formula which is prepared by triazolizing a corresponding o-amino-disazo-stilbene dye. It is used to colour cotton and paper in yellow shades. |
