DISAZO PIGMENT AND PRINTING INK COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a disazo pigment composition excellent in transparency and concentration when it is used in a printing ink and having a reddish hue.

SOLUTION: This disazo pigment produced by coupling a tetrazo component produced from 3.3'-dichlorobenzidine as a raw material and a coupler component is characterized by comprising as the coupling components, acetoacetoanilides represented by a specific structural formula and barbituric acids. Provided is further a disazo pigment characterized in that the acetoacetoanilides are a mixture of acetoacetoanilide and acetoacetoanilides containing a polar group.

COPYRIGHT: (C)2009,JPO&INPIT