| 摘要 |
PURPOSE:To produce the title pigment having excellent heat resistance, moldability and migration resistance, by adding a metal alkoxide to an org. pigment, crushing the mixture in a wet process and hydrolyzing the metal alkoxide. CONSTITUTION:100-500wt% metal alkoxide (e.g., zirconium tetrabutoxide) or mixture thereof with a solvent (e.g., an alcohol) is added to an org. pigment such as monoazo, disazo, phthalocyanine, etc. Crushing is initiated in a wet process. Water is added thereto and the wet-process crushing is done for 24-200hr to hydrolyze the metal alkoxide, thus forming a film of 0.1-10wt% metal oxide on the surface of the pigment.
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