| 摘要 |
Polyfluorocarboxylic acids of formula Rf(CH2)n-C(R)(R')(COOM) (I) and salts of these. The polyfluorocarboxylic acids and salts have the formula (I) in which RF = a perfluorinated group, linear or branched, with 4-18 C: n = 2, 3 or 11; M = H, Na or K; R = 1-18 C alkyl, aryl or aralkyl, any of which may be substituted, allyl, methallyl or propargyl, a polyoxyethylated group, a 2-oxoalkyl group R"COCH2- (R" = biphenyl substituted with a 1-10 C alkyl, an aralkyl group or a nitrile function), COOH, a perfluorinated group RF(CH2)2NHC(O)CH2- or a group RF(CH2)nCR'(COOM)-(CH2)m-2- (m-2 = 4,5,6,8,10,11,12 or 14 and n = 2, 3 or 11); R' = H or COOM (M = as above) . The optional substituents on the alkyl, aryl, or aralkyl groups are e.g. OH, SH, oxo or carboxylic groups. An independent claim refers to a method of production of the compounds (I) starting with saponification of the corresponding ester compounds. A further independent claim refers to the use of the compounds (I) as intermediates in the synthesis of surfactants and in the preparation of vesicular systems.
|
