RESIN COMPOSITION FOR PRINTING INK, RESIN VARNISH FOR PRINTING INK, METHODS FOR PRODUCING THESE, AND PRINTING INK

摘要

PROBLEM TO BE SOLVED: To provide a resin composition which is used for printing ink, is excellent in the aspect of environments, and has various physical properties equal to those of conventional rosin-modified phenolic resins.;SOLUTION: This resin composition for printing ink is characterized by containing a modified polyester resin (D) obtained by reacting an epoxy compound (B) and further a polyvalent isocyanate (C) with a rosin-based polyester (A) obtained by reacting a rosin compound (a) with at least one (b) selected from the group consisting of fatty acids, aliphatic polybasic acids, aliphatic monoalcohols, aliphatic dialcohols, aliphatic monoamines, aliphatic monoepoxy compounds, and a resin prepared by partially reacting a polymer comprising a carboxylic acid and a polymerizable hydrophobic unsaturated compound with a hydrophobic compound having reactivity with a carboxylic acid in the polymer, a polyol (c), and, optionally, a polar group-containing petroleum resin (d).;COPYRIGHT: (C)2005,JPO&NCIPI