| 摘要 |
NEW MATERIAL:Monoazo compounds of formula I (wherein A is a group of formula II or III; R1, R2 are each H, methyl, ethyl, methoxy, ethoxy, acetylamino, ureido; X1, X2 are H, Cl, methyl, methoxy, carboxyl, sulfo group). EXAMPLE:A compound of formula IV. USE:Dyes which dye cellulosic fibers highly deep yellow with excellent fastness to chlorine, light and perspiration. PREPARATION:2-Aminonaphthalene-4,6,8-trisulfonic acid is diazotized and then coupled with a compd. of formula V (wherein A is as defined above) to obtain a monoazo compd. of formula VI (wherein A is as defined above). The monoazo compd. is primarily condensed with cyanuric chloride to obtain a dichlorotriazinyl compd. which is then condensed with an aniline compd. of formula VII(wherein X1, X2 are as defined above) to obtain the dye of formula I .
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