| 摘要 |
NEW MATERIAL:Disazo compounds of formula I, wherein M is H, alkali metal; R<1> is H, methyl; Y is -COCH3, -COC2H5, -SO2CH3, etc.; X is halogen, a group of formula II; R<2>, R<3> are each H, methyl, methoxy, -SO3M; R<4> is H, methyl, ethyl; n is 0, 1. USE:Disazo dyes which can dye cellulosic fibers such as cotton, flax, etc. under pH and dyeing conditions under which polyester fibers can be dyed, and can easily dye mixed fabrics of cellulosic fibers and polyester fibers. PREPARATION:1mol of a dye of formula III (wherein X<1> is halogen) is condensed with 1mol of a dye of formula IV. The resulting disazo compd. is reacted with a compd. of formula VI in an equimolar ratio to obtain the disazo compd. of formula I, where X is a group of formula II.
|
