| 摘要 |
NEW MATERIAL:Pyridone monoazo compds. of formula I (wherein X is H, halogen, an alkoxy, an alkylcarbonyl, an alkyloxycarbonyl, an aralkyloxycarbonyl, an alkylsulfonyl, an arylsulfonyl, carbamoyl, sulfamoyl, cyano or the like; R is a 3-4C straight-chain or branched alkyl). USE:Dyes which have excellent dyeing quality and dyeing bath stability and can dye hydrophobic fibers such as polyamide fibers, polyester fibers, etc. clear greenish yellow to orange with excellent fastness to light, wetting, etc. PREPARATION:A compd. of formula II is reacted with a compd. of Z-R (wherein Z is halogen) to obtain the compd. of formula I. Alternatively, an amine of formula III is diazotized and then coupled with a compd. of formula IV to obtain the compd. of formula I.
|
