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US 2011/0086971 A1Published application
Masonry-treating agent
AssigneeDaikin Industries, Ltd.
InventorsAkihiko UEDA, Masahiko Maeda, Teruyuki Fukuda, Tetsuya Masutani
Life of this patent
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Abstract
A fluoropolymer for masonry treatment produced from (A) a fluoromonomer which has been substituted in the α-position by a X group and is represented by the formula (I): and (B) a monomer having a functional group reactive with active hydrogen. It imparts excellent water- and oil-repellency and unsusceptibility to fouling to masonries.
Claims7
1-6. (canceled)
A method of treating masonry, which comprises applying a composition comprising a fluorine-containing polymer and an organic solvent to a surface of a masonry, and then eliminating the organic solvent,
- wherein the fluorine-containing polymer, comprises:
- (A) repeating units derived from a fluorine-containing monomer of the formula:
- wherein X is a fluorine atom, a chlorine atom, a bromine atom, an iodine atom, a CFX1X2 group (in which X1 and X2 are each a hydrogen atom, a fluorine atom, a chlorine atom, a bromine atom or an iodine atom), a cyano group, a linear or branched fluoroalkyl group having 1 to 20 carbon atoms, a substituted or unsubstituted benzyl or a substituted or unsubstituted phenyl group;
- Y is an aliphatic group having 1 to 10 carbon atoms, an aromatic or cycloaliphatic group having 6 to 10 carbon atoms, a —CH2CH2N(R1)SO2— group (in which R1 is an alkyl group having 1 to 4 carbon atoms) or a —CH2CH(OY1)CH2— group (in which Y1 is a hydrogen atom or an acetyl group);
- and
- Rf is a linear or branched fluoroalkyl or fluoroalkenyl group having 1 to 21 carbon atoms, or a fluoroether group having totally 1 to 200 repeating units selected from the group consisting of the repeating units:
- —C3F6O—, —C2F4O— and —CF2O—, and
- (B) repeating units derived from a monomer having a functional group reactive with active hydrogen.
5 more elements
Dependencies are inferred from the claim text.