| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a method for producing a ground azo pigment having excellent dispersibility. <P>SOLUTION: The method for producing the ground azo pigment comprises a grinding step of kneading a mixture of at least one of an azo pigment shown by general formula (1) (wherein Z is a bivalent group derived from a 5- to 8-membered nitrogen-containing heterocycle; Y<SB>1</SB>, Y<SB>2</SB>, R<SB>11</SB>and R<SB>12</SB>are each a hydrogen atom or a substituent independently; G<SB>1</SB>and G<SB>2</SB>are each an alkyl group or the like; and W<SB>1</SB>and W<SB>2</SB>are each an alkoxy group or the like independently), a tautomer of the azo pigment, their salts and their hydrates, water-soluble inorganic salt and a water-soluble organic solvent. <P>COPYRIGHT: (C)2010,JPO&INPIT |
