| 摘要 |
Fluorine-containing urethanes represented by the general formula: <?in-line-formulae description="In-line Formulae" end="lead"?>[Rf-A<SUP>1</SUP>-Z-X<SUP>1</SUP>-OC(-O)NH-]<SUB>m</SUB>I[-NHC(-O)O-Y<SUP>1</SUP>]<SUB>n</SUB>[-NHC(-O)O-(ClCH<SUB>2</SUB>-)X<SUP>2</SUP>O)<SUB>a</SUB>-R<SUP>1</SUP>]<SUB>k </SUB> (1) <?in-line-formulae description="In-line Formulae" end="tail"?> wherein I is a group derived from a polyisocyanate by removal of the isocyanato groups; Rf is perfluoroalkyl of 1 to 21 carbon atoms; A<SUP>1 </SUP>is a direct bond or an organic group of 1 to 21 carbon atoms; Z is -S- or -SO<SUB>2</SUB>-; X<SUP>1 </SUP>is a divalent, straight-chain or branched, C<SUB>1-5 </SUB>aliphatic group which may have at least one hydroxyl group; X<SUP>2 </SUP>is a trivalent, straight-chain or branched, C<SUB>2-5 </SUB>aliphatic group; Y<SUP>1 </SUP>is a monovalent organic group which is optionally hydroxylated; and R<SUP>1 </SUP>is hydrogen or alkyl of 1 to 10 carbon atoms.
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