In lithographic inks containing colorant, binder resin and reactive diluent, the diluent comprises oxidatively curable ester prepared by reaction of drying oil fatty acid with hydroxyl-containing, addition polymerizable compounds, such as reaction product of polyol with addition polymerizable acid, hydroxyalkyl ester of such acid, hydroxyalkyl vinyl sulfide or hydroxyalkyl vinyl ether. The curable ester may also be prepared by reaction of addition polymerizable acid with hydroxyl-containing reaction product of polyol with drying oil fatty acid. Transesterifiable esters can be used instead of the acids. Preferred drying oil acids are derived from tung oil, linseed oil, safflower oil, soybean oil or dehydrated castor oil. The curable ester preferably comprises acryloxy alkyl or methacryloxy alkyl drying oil fatty acid ester.
在含有
着色剂、粘合剂
树脂和活性稀释剂的平版印刷油墨中,稀释剂包括通过干燥油脂酸与含羟基的可加成聚合化合物(如多元醇与可加成聚合酸的反应产物、此类酸的羟烷基酯、羟烷基
乙烯基硫醚或羟烷基
乙烯基醚)反应制备的氧化可固化酯。固化酯也可以通过可加成聚合酸与多元醇与干燥油
脂肪酸的含羟基反应产物反应制备。也可以使用可酯化的酯来代替酸。首选的干燥
油酸来自桐油、亚麻籽油、红花油、大豆油或脱
水蓖麻油。固化酯最好包括
丙烯酰氧基烷基或甲基
丙烯酰氧基烷基干燥油
脂肪酸酯。