| 摘要 |
A compound of formula (I): wherein k is 1 or 2; Y is-CHCH(CF)or-(CH)C; X is hydrogen,-(CH)nR, or-C(O)[CF(A)]-B-R> wherein B is a divalent radical selected from the group consisting of a covalent bond,-O-and-(CH)-; A is-F or-CF; and each Rf is independently Cto Cperfluohnated linear or branched alkyl, optionally interrupted by one or more oxygens; Ris Ror is a linear or branched alkyl having from about 10 to about 100 carbon atoms, interrupted or substituted by one or more hydrophilic groups selected from the group consisting of-O-,-OH,-NR-,-N(R), and-C(O)NR-, wherein a) the ratio of hydrophilic groups to carbon atoms is from about 1:2 to about 1:10; b) each carbon atom has at most one hydrophilic group bonded to it, and c) covalent bonding between hydrophilic groups is absent; R is hydrogen or a Cto Clinear or branched alkyl; and Ris a linear or branched aliphatic group of from about 10 to about 100 carbon atoms, interrupted by about from about 5 to about 50 ether oxygens, wherein a) the ratio of ether oxygen to carbon atoms is from about 1:2 to about 1:3, b) each carbon atom has at most one ether oxygen atom bonded to it, and c) covalent bonding between ether oxygen atoms is absent; provided that 1) when Y is-(CH)R, Ris R; 2) when X is hydrogen, Y is-CHCH(CF); and 3) when X is-(CH)Rand Y is (CH)R, Ris R.
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