Fluorine-containing polymer and water- and oil-repellent agent

A water- and oil-repellent agent and polymer technology, which can be used in fabrics, textiles, papermaking, and liquid-repellent fibers.

Active Publication Date: 2011-02-23
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is a problem that the water and oil repellency deteriorates when the treatment temperature is lowered

Method used

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  • Fluorine-containing polymer and water- and oil-repellent agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0156] The following examples further illustrate the present invention in detail, but should not be construed as limiting the scope of the present invention.

[0157] Hereinafter, unless otherwise specified, "parts" or "%" are parts by weight or% by weight.

[0158] The test process is as follows:

[0159] Water spray test:

[0160] According to JIS-L-1092, carry out spray water resistance test. The water resistance No. is used to represent the spray water resistance (as shown in Table 1 below). The suffix "+" attached to the numerical value means that the performance is slightly better than the performance indicated by the numerical value.

[0161] Table 1

[0162]

[0163]

[0164] Waterproof test:

[0165] Store the treated cloth in a thermo-hygrostat at a temperature of 21°C and a humidity of 65% for at least 4 hours. The test liquids (isopropanol (IPA), water and their mixtures, as shown in Table 2) also stored at 21°C were used. The test was performed in an air-conditioned roo...

preparation example 1

[0180] CF 3 CF 2 (CF 2 CF 2 ) n CH 2 CH 2 COOCH=CH 2 (Where n is a mixture of compounds of 3, 4 and 5; the average value of n is 3.1) (160g), stearoyl acrylate (26g), cyclohexyl methacrylate (52g), glycidyl methacrylate (2.6g), N-methylolacrylamide (10.9g), 3-chloro-2-hydroxypropyl methacrylate (2.6g), octyl mercaptan (0.1g), (C 16 -C 18 ) Alkyl trimethyl ammonium chloride (20 g), lauryl dimethyl amine oxide (2 g), tripropylene glycol (42 g) and deionized water (480 g) were mixed to obtain a mixture. The mixture was heated to 60°C and emulsified with a high-pressure homogenizer. The obtained milky liquid was placed in a 300 mL flask, and replaced with nitrogen to remove dissolved oxygen. Subsequently, azobisisobutylamidine dihydrochloride (0.5 g) was charged. The polymerization was carried out while stirring at 60°C for 3 hours to produce a copolymer emulsion. The emulsion was diluted with deionized water to produce a fluorine-containing acrylic water and oil repellent (aqueo...

preparation example 2

[0183] CF 3 CF 2 (CF 2 CF 2 ) n CH 2 CH 2 COOCH=CH 2 (Where n is a mixture of compounds of 3, 4 and 5; the average value of n is 3.1) (160g), stearoyl acrylate (26g), cyclohexyl methacrylate (52g), glycidyl methacrylate (2.6g), N-methylol acrylamide (10.9g), 3-chloro-2-hydroxypropyl methacrylate (2.6g), octyl mercaptan (0.05g), (C 16 -C 18 ) Alkyl trimethyl ammonium chloride (20 g), lauryl dimethyl amine oxide (2 g), tripropylene glycol (42 g) and deionized water (480 g) were mixed to obtain a mixture. The mixture was heated to 60°C and emulsified with a high-pressure homogenizer. The obtained milky liquid was placed in a 300 mL flask, and replaced with nitrogen to remove dissolved oxygen. Subsequently, azobisisobutylamidine dihydrochloride (0.5 g) was charged. The polymerization was carried out while stirring at 60°C for 3 hours to produce a copolymer emulsion. The emulsion was diluted with deionized water to produce a fluorine-containing acrylic water and oil repellent (aqu...

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PUM

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Abstract

A water- and oil-repellent agent is an aqueous emulsion containing a fluorine-containing polymer. The fluorine-containing polymer comprises (a) a fluorine-containing monomer, and (b) a crosslinkable monomer, wherein the monomers (a) and (b) are polymerized in the presence of a chain transfer agent to produce the fluorine-containing polymer.

Description

[0001] Cross reference of related applications [0002] This application claims the priority of U.S. Provisional Application No. 61 / 040,567 filed on March 28, 2008 in accordance with 35 U.S.C. §119(e), the entire contents of which are incorporated herein for reference. Technical field [0003] The present invention relates to fluoropolymers and water and oil repellents. Background technique [0004] Fluoropolymers are widely used in the treatment of fabrics with water and oil resistance and water pressure resistance. JP-A-50-003438 and JP-A-63-090588 disclose a fluoropolymer that provides water and oil repellency. It is desirable to lower the treatment temperature as much as possible so that the fabric can be treated with fluoropolymers with less energy and lower cost. However, there is a problem that the water and oil repellency deteriorates when the processing temperature is lowered. Summary of the invention [0005] Technical problems to be solved by the present invention [000...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/295C08F214/06C08F220/24
CPCC08F214/186D06M15/233D06M15/3562D06M15/227C08F214/18D06M15/29D06M2200/11D06M15/347D06M15/285D06M15/277D06M2200/12C08F220/24D06M15/248D06M15/263Y10T442/2172
Inventor 仲村尚子薄谷光宏原良辅
Owner DAIKIN IND LTD
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