28-03-2013 дата публикации
Номер: US20130078880A1
Принадлежит:
Disclosed is a fluorine-containing polymer prepared by polymerizing: (I) a polyfluoroalkyl group-containing (meth)acrylate, in the presence of: (II) an isocyanate compound blocked with a pyrazole compound or a malonate ester. A water- and oil-repellent composition containing the fluorine-containing polymer can impart the excellent water- and oil-repellency, and excellent durability thereof to substrates. 1. A fluorine-containing polymer prepared by polymerizing:(I) a polyfluoroalkyl group-containing (meth)acrylate,in the presence of:(II) an isocyanate compound blocked with at least one blocking agent selected from the group consisting of a pyrazole compound and a malonate ester compound.2. The polymer according to claim 1 , wherein the polyfluoroalkyl group-containing (meth)acrylate (I) is a compound of the formula:{'br': None, 'sub': '2', 'CH═C(—X)—C(═O)—Y—Z—Rf\u2003\u2003(I)'}wherein X is a hydrogen atom or a methyl group;Y is —O— or —NH—;{'sub': 2', '2', '2', '2', '2', '2', 'm', '2', '2', 'n', '2', 'm', '2', 'n, 'sup': 1', '1', '1', '1, 'Z is a direct bond, an aliphatic group having 1 to 10 carbon atoms, an aromatic or cycloaliphatic group having 6 to 18 carbon atoms, a —CHCHN(R)SO— group (wherein Ris an alkyl group having 1 to 4 carbon atoms), a —CHCH(OZ) CH— group (wherein Zis a hydrogen atom or an acetyl group, a —(CH)—SO—(CH)— group, or a —(CH)—S—(CH)— group (wherein m is from 1 to 10 and n is from 0 to 10; and'}Rf is a linear or branched fluoroalkyl group having 1 to 21 carbon atoms.3. The polymer according to claim 2 , wherein the Rf group in the polyfluoroalkyl group-containing (meth)acrylate (I) has 1 to 6 carbon atoms.4. The polymer according to claim 2 , wherein the Rf group in the polyfluoroalkyl group-containing (meth)acrylate (I) is a perfluoroalkyl group.7. The polymer according to claim 1 , further comprising an organosiloxane.8. The polymer according to claim 7 , prepared by polymerizing a monomer comprising the polyfluoroalkyl group-containing ( ...
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