| 摘要 |
There are described silane acetoacetarylide dyes, composite pigments obtainable therefrom by grafting onto an inorganic substrate or support, and processes for preparing the same. The dyes have the general formula: <CHEM> wherein R, R1 and R2, which may be the same or different from one another, are a hydrogen atom, an alkyl or an alkoxyl group having up to 4 carbon atoms, a halogen, a nitro group, an acetyl(-COCH3) group, or a carbamoyl (-CONH2) group; n is 3, 4 or 5: q is 0 or 1; p and m are integers such that, when q is 0, p is 3 and m is 0, 1, 2 or 3, and when q is 1, p is 2 and m is 0, 1 or 2; R3 is an alkyl group having up to 4 carbon atoms or a phenyl group; and R4 is an alkoxy group having up to 4 carbon atoms. The composite pigments obtained from said dyes are utilized in paints, air and stove enamels, in the pigmentation of plastics and in printing inks. |
