METHOD FOR MANUFACTURING RESIN VARNISH FOR OFFSET PRINTING INK, RESIN VARNISH FOR OFFSET PRINTING INK OBTAINED USING THE METHOD, AND OFFSET PRINTING INK COMPOSITION

摘要

PROBLEM TO BE SOLVED: To provide a method for manufacturing a varnish which has little heat energy loss, protects the resin against becoming a low molecular weight by an ester exchange reaction, and can be realized only by improving a part of an existing varnish-manufacturing apparatus.;SOLUTION: This method for manufacturing the resin varnish for an offset printing ink comprises (1) a step of grinding a solid resin so as to be ≤3 mm of a mean particle diameter, and (2) a step of dissolving the solid resin in an oily component at a temperature of 80-200°C.;COPYRIGHT: (C)2010,JPO&INPIT