Fluorine-containing urethanes represented by the general formula:
[Rf-A1-Z-X1-OC(=O)NH-]m I [-NHC(=O)O-Y1]n [-NHC(=O)O-((ClCH2-)X2O)a-R1]k (1)
wherein I is a group derived from a polyisocyanate by removal of the isocyanato groups; Rf is perfluoroalkyl of 1 to 21 carbon atoms; A1 is a direct bond or an organic group of 1 to 21 carbon atoms; Z is -S- or -SO2-; X1 is a divalent, straight-chain or branched, C1-5 aliphatic group which may have at least one hydroxyl group; X2 is a trivalent, straight-chain or branched, C2-5 aliphatic group; Y1 is a monovalent organic group which is optionally hydroxylated; and R1 is hydrogen or alkyl of 1 to 10 carbon atoms.
由通式表示的含
氟聚
氨酯:
[Rf-A1-Z-X1-OC(=O)NH-]m I [-NHC(=O)O-Y1]n [-NHC(=O)O-((ClCH2-)X2O)a-R1]k (1)
其中,I 是通过去除
异氰酸酯基团从多
异氰酸酯衍生的基团;Rf 是 1 至 21 个碳原子的
全氟烷基;A1 是直接键或 1 至 21 个碳原子的有机基团;Z 是 -S- 或 -SO2-;X1 是二价、直链或支链、C1-5 脂肪族基团,可带有至少一个羟基;X2 是三价、直链或支链、C2-5 脂肪族基团;Y1 是一价有机基团,可选择羟化;R1 是氢或 1 至 10 个碳原子的烷基。