| 摘要 |
NEW MATERIAL:An anthraquinone pigment of formula I [R<1> is benzyl or cyclohexyl; R<2> is alkyl, aralkyl, aryl, 5-6-membered cycloalkyl, alkenyl, alkenyloxyalkyl, alkoxy(alkoxy)alkyl, hydroxy(alkoxy)alkyl or hydroxythioalkyl]. EXAMPLE:The compound of formula II. USE:A colorant for heat-sensitive sublimation transfer recording. It has excellent light-resistance, storage stability and sublimation transfer performance. PREPARATION:For example, the compound of formula III is mixed with chlorobenzene and a mixture of pyridine and thionyl chloride by stirring under heating. Excess thionyl chloride is removed from the mixture under reduced pressure and the residual mixture is added with cyclohexanol and stirred under heating. The product is cooled at room temperature, added with methanol, filtered to collect precipitated crystal, washed with water and dried to obtain the objective pigment. |
