| 摘要 |
There are described silane anthraquinone 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> in which: R1 is an alkyl group containing up to 4 carbon atoms or a phenyl group; R2 is an alkoxyl group containing up to 4 carbon atoms; 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; r is 1 or 2; and X represents a divalent amino (-NH-) or amido (-NHCO-) residue, linked to the alpha or beta positions of the anthraquinone nucleus when r is 1, or linked to the alpha positions of the anthraquinone nucleus when r is 2, and the anthraquinone nucleus may be substituted by one or more R groups selected from -NH2, -NH-alkyl C1-C4 -NHCO-CH3, -NH-phenyl or -NHCO-phenyl in which the phenyl group is optionally substituted, -OH, -OCH3, O-phenyl, -CH3, -Cl or Br, and -NO2. The composite pigments obtained from said dyes are utilized in paints, air and stove enamels, in the pigmentation of plastics and in printing inks. |
