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Masonry-treating agent

Inactive Publication Date: 2007-03-22
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0008] One of objects of the present invention is to provide a treatment agent which imparts both of excellent water- and oil-repellency and excellent soil resistance to a masonry.
[0019] The present invention further provides a method of producing a treated masonry, which comprises applying said composition to a surface of a masonry, and then eliminating the organic solvent.
[0070] The treatment agent can give the water-repellent oil-repellent performance to the masonry surface, since the treatment agent contains the fluorine-containing polymer. The adhesion of a soil to masonry can be prevented, even if the soil is an aqueous soil or is an oily soil. PREFERABLE EMBODIMENTS OF THE INVENTION

Problems solved by technology

These treatments or these treatment agents, however, do not have both of sufficient water repellency and sufficient oil repellency, and cannot impart sufficient soil resistance for a masonry-treatment agent.
However, these have not been practically used as a masonry-treatment agent.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

example 1

[0079] Into a 200 cc four-necked flask equipped with a stirrer, an inert gas inlet, a condenser and a thermometer, 13.0 g of CF3CF2CF2CF2CH2CH2OCOCCl═CH2, 6.5 g of stearyl acrylate, 0.5 g of γ-methacryloxypropyltrimethoxysilane (SZ6030 manufactured by Dow Corning Toray Co., Ltd.) and 113.3 g of tetrachlorohexafluorobutane (S-316 manufactured by Daikin Industries, Ltd.) were charged and heated to 60° C. A solution of t-butyl peroxypivalate (1.5 g) (PERBUTYL PV manufactured by NOF Corp.) in trichloroethane (7.3 g) was added and the polymerization reaction was conducted with stirring at 60° C. for at least 12 hours. A gas chromatography revealed that a polymerization reaction conversion was at least 97%. The resultant polymer solution was diluted with butyl acetate to give a treatment liquid having a solid content of 3%.

[0080] A surface of each of polished natural granite (mined in China, and purchased from Nittai Kogyo Kabushiki-Kaisha) and limestone (purchased from Inax Corp.) was c...

example 2

[0083] Into a 200 cc four-necked flask equipped with a stirrer, an inert gas inlet, a condenser and a thermometer, 16.8 g of CF3CF2CF2CF2CH2CH2OCOCCl═CH2, 2.7 g of stearyl acrylate, 0.5 g of γ-methacryloxypropyltrimethoxysilane (SZ6030 manufactured by Dow Corning Toray Co., Ltd.) and 60 g of butyl acetate were charged and heated to 70° C. Azobisisobutyronitrile (0.15 g) was added and the polymerization reaction was conducted with stirring at 70° C. for at least 12 hours. A gas chromatography revealed that a polymerization reaction conversion was at least 97%. In the same manner as in Example 1, the polymer solution was diluted with butyl acetate to adjust the solid concentration to 3%, the treatment was conducted and the soil resistance test was conducted. The results are shown in Table 1 and Table 2.

example 3

[0084] The polymerization reaction was conducted to give a polymer solution in the same procedure as in Example 1 except that CF3CF2CF2CF2CH2CH2OCOCCl═CH2 was changed to CF3CF2CF2CF2CH2CH2OCOCF═CH2. In the same manner as in Example 1, the polymer solution was diluted with butyl acetate to adjust the solid concentration to 3%, the treatment was conducted and the soil resistance test was conducted. The results are shown in Table 1 and Table 2.

TABLE 1Soil resistance test (granite)Olive OilWaste oilRed wineCoffeeExample 15545Comparative Example 12222Comparative Example 23323Untreated1111Example 25555Example 35445

[0085]

TABLE 2Soil resistance test (limestone)Olive OilWaste oilRed wineCoffeeExample 15445Comparative Example 12222Comparative Example 23223Untreated1111Example 25555Example 35445

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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.

Description

TECHNICAL FIELD [0001] The present invention relates to a fluorine-containing polymer for treating a masonry and a composition for treating a masonry. BACKGROUND ARTS [0002] It is studied that water and oil repellency and soil resistance are imparted by treating a surface of a masonry such as stone with a compound having a fluoroalkyl group (Rf group). [0003] For example, JP-A-57-23662 describes that an acrylate having a Rf group is coated on a concrete and a stone to form a protective film. JP-A-07-109317 discloses a treatment agent comprising a fluorine-containing copolymer comprising a monomer having a Rf group, and a silicone-based vinyl monomer. JP-A-11-507687 discloses a masonry-treatment agent comprising a water-soluble polymer having a Rf group, a carboxyl group, an oxyalkylene group and a silyl group. EP1225187 discloses the treatment of ceramics with a polymer having a silyl group which comprises a Rf group-containing monomer, a fluorine-free monomer and a silyl group-cont...

Claims

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Application Information

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IPC IPC(8): C08F16/24C04B41/48C08F220/24
CPCC08F220/24C04B41/4842
Inventor UEDA, AKIHIKOMAEDA, MASAHIKOFUKUDA, TERUYUKIMASUTANI, TETSUYA
Owner DAIKIN IND LTD
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