| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To prepare a printing ink superior to the conventional pigment yellow 74 in transparency and density. <P>SOLUTION: The pigment yellow 74 is characterized in that it is obtained by coupling a coupler component comprising 2-methoxyacetoacetoanilide with a diazo component prepared by diazotizing 2-methoxy-4-nitroaniline and an aniline derivative represented by formula (1) [wherein Z's may be the same or different and are each a CONR<SB>1</SB>R<SB>2</SB>, an SO<SB>2</SB>NR<SB>1</SB>R<SB>2</SB>, a CONH(CH<SB>2</SB>)kNR<SB>1</SB>R<SB>2</SB>, an SO<SB>2</SB>NH(CH<SB>2</SB>)kNR<SB>1</SB>R<SB>2</SB>(wherein R<SB>1</SB>and R<SB>2</SB>are each independently H or an alkyl, or may be combined together to form a cyclic structure; and (k) is an integer of 1 to 4), COOH or SO<SB>3</SB>H; (s) is an integer of 1 or 2; Q's may be the same or different and are each R<SB>3</SB>, OR<SB>3</SB>(wherein R<SB>3</SB>is H or an alkyl), or NO<SB>2</SB>; and (t) is an integer of 0 to 2], in an amount of 0.1-10 mol% based on the 2-methoxy-4-nitroaniline. <P>COPYRIGHT: (C)2003,JPO</p> |
