| 摘要 |
A composition of formula I <?in-line-formulae description="In-line Formulae" end="lead"?>[Rf(CH2)m(O)n]x-A <?in-line-formulae description="In-line Formulae" end="tail"?> wherein R<SUB>f </SUB>is a straight or branched perfluoroalkyl group having from about 2 to about 20 carbon atoms, or a mixture thereof, m is a positive integer equal to or greater than 3, n is 0 or 1, x is 1 to about 3, A is -P(O)(OR<SUP>1</SUP>)<SUB>y</SUB>(OM<SUP>+</SUP>)<SUB>3-y-x</SUB>, -C(O)CH(SO<SUB>3</SUB><SUP>-</SUP>M<SUP>+</SUP>)CH<SUB>2</SUB>C(O)-, -(CH<SUB>2</SUB>CH<SUB>2</SUB>O)<SUB>d</SUB>(CH<SUB>2</SUB>CHR<SUP>2</SUP>O)<SUB>e</SUB>R<SUP>3</SUP>, or -SO<SUB>2</SUB>B, M<SUP>+</SUP> is an alkali metal ion, NH<SUB>4</SUB><SUP>+</SUP>, or NH<SUB>2</SUB><SUP>+</SUP>(CH<SUB>2</SUB>CH<SUB>2</SUB>OH)<SUB>2</SUB>, B is N(R<SUP>2</SUP>)<SUB>2 </SUB>or N(CH<SUB>2</SUB>CH<SUB>3</SUB>)(CH<SUB>2</SUB>CH<SUB>2</SUB>OH), R<SUP>1 </SUP>is C<SUB>1 </SUB>to C<SUB>3 </SUB>alkyl, R<SUP>2 </SUP>is C<SUB>1 </SUB>to C<SUB>4 </SUB>alkyl, R<SUP>3 </SUP>is H or CH<SUP>3</SUP>, y is 0 to about 1, d is 0 to about 16, e is 0 to about 16, provided that (d+e) is from about 3 to about 16 is disclosed.
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