| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a novel copolymer having excellent pigment dispersion performance, particularly, a novel copolymer which can be used as a pigment dispersant capable of attaining higher brightness and higher contrast of green pigment particularly in a color filter. <P>SOLUTION: The novel copolymer contains: a block chain (A) including a repeating unit having tertiary amino group; and a block chain (B) including a repeating unit represented by formula (I) (wherein R<SP POS="POST">1</SP>represents hydrogen atom or 1-3C alkyl, R<SP POS="POST">2</SP>and R<SP POS="POST">3</SP>each independently represent hydrogen atom or 1-6C alkyl, Q represents oxygen-containing heterocyclic group which may have alkyl as a substituent or 2-20C alkenyl, and n represents an integer of 0-6), and has an amine value of 80 mgKOH/g or more and 250 mgKOH/g or less. <P>COPYRIGHT: (C)2013,JPO&INPIT |
