22-05-2014 дата публикации
Номер: US20140142222A1
Provided is a surfactant which has a high surface tension reducing ability and a high solubility in a liquid medium, comprising a fluorine-containing copolymer containing, as essential components, a monomer having a fluoroalkyl group having 1 to 7 carbon atoms, a hydrophilic monomer, and a monomer having an ion donor group. Further provided are a coating composition, an ink composition and a photographic emulsion composition, each comprising the surfactant. 1. A method of lowering the surface tension of a solution , comprising applying a surface active agent comprising a fluorine-containing copolymer to the solution , wherein the fluorine-containing copolymer comprises repeating units derived from the following monomers (a) , (b) and (c): {'br': None, 'sub': '2', 'CH═C(—X)—C(═O)—Y—Z—Rf\u2003\u2003(1)'}, '(a) a fluorine-containing monomer having a fluoroalkyl group, represented by the general formula{'sub': 1', '21', '1', '21, 'sup': 1', '2', '1', '2, 'wherein X represents a hydrogen atom, a linear or branched Cto Calkyl group, a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a CFXXgroup wherein Xand Xare a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom or an iodine atom, a cyano group, a linear or branched Cto Cfluoroalkyl group, a substituted or non-substituted benzyl group, or a substituted or non-substituted phenyl group;'}Y is —O— or —NH—;{'sub': 1', '10', '6', '10, 'Z is a Cto Caliphatic group, a Cto Caromatic or cyclic aliphatic group,'}{'sub': 2', '2', '2', '1', '4, 'sup': 1', '1, 'a —CHCHN(R)SO— group wherein Ris a Cto Calkyl group,'}{'sub': 2', '2, 'sup': 1', '1, 'a —CHCH(OZ) CH— group wherein Zis a hydrogen atom or an acetyl group,'}{'sub': 2', '2', '2', 'n', '2', 'm', '2', 'n, 'a —(CH), —SO—(CH)— group or a —(CH)—S—(CH)— group wherein'}m is an integer from 1 to 10 and n is an integer from 0 to 10, and{'sub': 1', '7, 'Rf is a linear or branched Cto Cfluoroalkyl group,'}(b) a hydrophilic monomer, and(c) a monomer having an ...
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