| 摘要 |
NEW MATERIAL:Monoazo compounds of formula I wherein A is a group of formula I or II; R is alkyl, alkyloxyalkyl, alkyloxyalkyl, phenyloxyalkyl, benzyl; R' is H, alkyl, allyloxyalkyl, alkyloxyalkyl, phenyloxyalkyl, benzyl, cyanomethyl, allyloxycarbonylmethyl, etc.; the sum of carbon atoms of R and R' is 6-16. USE:Dyes which dye mixed fabrics and fiber blends of polyester fibers with natural fibers such as cotton, silk and wool yellow. They can achieve sufficient resist-printability and dischargeability by the use of a small quantity of an alkali, have an excellent effect of preventing fiber strength from being lowered and are excellent in fastness and dyeability. PREPARATION:A compd. of formula IV is diazotized and then coupled with a coupling component of the formula H-A to obtain the desired compd.
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