| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a polyurethane binder for printing ink which adheres well to all the kinds of plastic films, exhibits a good processibility after printing, is excellent in aging stability, and is environmentally friendly and a printing ink compsn. contg. the same. SOLUTION: This binder contains. as the main ingredient, a polyurethane resin obtd. by reacting a poly(ethylene-butylene) copolymer having 0.5-2 hydroxyl groups in the molecule and a number average mol.wt. of 1.000-10.000, a high- molecular polyol having a number average mol.wt. of 500-10.000 and both molecular terminals hydroxylated, an org. diisocyanate, and a short-chain glycol and/or a short-chain diamine.</p> |
