| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide non-water based pigment ink being stable relative to storage in an open system and excellent in delivery stability when it is used in an inkjet recording system. <P>SOLUTION: In the non-water based pigment ink containing a pigment, a pigment dispersing agent and a non-water based solvent, the pigment dispersing agent is an acrylic polymer containing an alkyl (meth)acrylate (M1) having a ≥12C alkyl group, a (meth)acrylic acid derivative (M2) having an amino group, and a (meth)acrylic acid derivative (M3) having an aromatic ring or a polycyclic aliphatic ring as a constitution monomer. In the non-water based pigment ink, of the whole constitution monomer, 75-85 mol% of the monomer (M1) is contained, 7-10 mol% of the monomer (M2) is contained and 8-16 mol% of the monomer (M3) is contained. <P>COPYRIGHT: (C)2009,JPO&INPIT |
