The present invention relates to a polyurethane, which is particularly suitable as binder for a printing ink, which is obtainable by reacting:
a) a polyol component including:
i) at least one polytetramethylene glycol,
ii) at least one diol having a molecular weight of not more than 200 g/mol being different from polytetramethylene glycol,
iii) at least one trivalent or higher-valent alcohol having a molecular weight of not more than 6000 g/mol,
b) an isocyanate component including at least one organic diisocyanate compound and
c) at least one di-functional amine compound and at least one mono-functional amine compound.
本发明涉及一种聚
氨酯,它特别适用于作为印刷油墨的粘合剂,可通过反应获得:
a) 多元醇成分,包括
i) 至少一种聚四亚甲基
乙二醇、
至少一种二元醇,其分子量不大于 200 克/摩尔,与聚
四亚甲基二醇不同、
iii) 至少一种分子量不超过 6000 克/摩尔的三价或高价醇、
b)
异氰酸酯成分,包括至少一种有机二
异氰酸酯化合物和
c) 至少一种二官能胺化合物和至少一种单官能胺化合物。