BINDER FOR PRINTING INK AND PRINTING INK COMPOSITION CONTAINING THE SAME

摘要

A printing ink binder which has excellent adhesion to films of various plastics such as polyesters,nylons,and polyolefins as ink−receiving matters and is suitable especially for printing inks based on a nonaromatic solvent;and a printing ink composition containing the printing ink binder.The printing ink binder comprises a polyurethane containing at least 50 wt.% high−molecular diol which is a polyester diol obtained from a 2,2−dialkyl−1,3−propanediol(A),a dibasic acid ingredient(B),and a lactone(C).