摘要：【中文】本发明属于油墨印刷技术领域，具体涉及一种耐高温聚氨酯油墨连接料，尤其涉及一种耐高温、耐热封压烫、耐蒸煮性能优异的食品软包装用凹版印刷的聚氨酯油墨连接料，并进一步公开其制备方法。本发明所述耐高温聚氨酯油墨连接料，是以含有氨基甲酸酯结构的聚合物二元醇、聚酯二元醇、二异氰酸酯、二元胺类扩链剂、分子量调节剂以及环氧交联剂为原料经聚合反应得到的聚氨酯聚合物。本发明所述聚氨酯油墨连接料，综合了聚合物二元醇中的氨基甲酸酯结构、二元胺类扩链剂中的硫醚结构和三环氧丙基异氰尿酸酯刚性交联结构的有益效果，使制得的油墨具有耐高温、耐热封压烫、耐蒸煮性能，并保证油墨优良的印刷适应性。 【EN】The invention belongs to the technical field of ink printing, particularly relates to a high-temperature-resistant polyurethane ink binder, and particularly relates to a gravure-printed polyurethane ink binder for food flexible packages, which has excellent high-temperature resistance, heat sealing and pressing resistance and steaming resistance, and further discloses a preparation method of the gravure-printed polyurethane ink binder. The high-temperature-resistant polyurethane ink binder is a polyurethane polymer obtained by polymerization reaction of polymer dihydric alcohol containing a carbamate structure, polyester dihydric alcohol, diisocyanate, a diamine chain extender, a molecular weight regulator and an epoxy cross-linking agent. The polyurethane ink binder provided by the invention integrates the beneficial effects of a carbamate structure in polymer dihydric alcohol, a thioether structure in a diamine chain extender and a rigid cross-linking structure of the tris (glycidyl isocyanurate), so that the prepared ink has the properties of high temperature resistance, heat sealing and pressing resistance and boiling resistance, and the excellent printing adaptability of the ink is ensured.

摘要：【中文】本发明属于凹版油墨印刷技术领域，具体涉及一种耐溶剂稀释型聚氨酯油墨连接料，尤其涉及一种耐溶剂稀释性、耐蒸煮性、抗粘连性能优异的软包装凹版印刷复合油墨用聚氨酯连接料，并进一步公开其制备方法。本发明所述凹版印刷复合油墨用聚氨酯连接料，通过以交联型多元醇和异氰酸酯反应，然后再用交联剂对聚氨酯树脂进行再次交联反应，在聚氨酯合成中引入双交联网状立体结构，不仅限制了分子链的运动，而且使溶剂分子难以渗透，使得聚氨酯树脂的耐溶剂稀释性随着交联度的提高而增强，有效地提高了聚氨酯的耐热性、耐溶剂溶解性、耐溶剂稀释性，适宜于软包装凹版印刷复合油墨的性能要求。 【EN】The invention belongs to the technical field of gravure ink printing, particularly relates to a solvent-resistant diluted polyurethane ink binder, and particularly relates to a polyurethane binder for flexible package gravure printing composite ink with excellent solvent dilution resistance, boiling resistance and blocking resistance, and further discloses a preparation method of the polyurethane binder. According to the polyurethane binder for the gravure printing composite ink, the cross-linked polyol and the isocyanate react, then the cross-linking agent is used for carrying out cross-linking reaction on the polyurethane resin again, and a double cross-linked network-shaped three-dimensional structure is introduced in the polyurethane synthesis, so that the movement of molecular chains is limited, solvent molecules are difficult to permeate, the solvent dilution resistance of the polyurethane resin is enhanced along with the improvement of the cross-linking degree, the heat resistance, the solvent solubility resistance and the solvent dilution resistance of the polyurethane are effectively improved, and the polyurethane binder is suitable for the performance requirements of the flexible package gravure printing composite ink.