Water-repellent/oil-repellent composition

A water- and oil-repellent agent, water-based composition technology, applied in other chemical processes, coatings, chemical instruments and methods, etc., can solve the problem of insufficient water- and oil-repellent properties and water resistance, decreased water- and oil-repellent properties, and long-term storage stability. Insufficient stability of inclusions, etc., to achieve excellent water and oil resistance, good long-term storage effect

Inactive Publication Date: 2007-07-25
DAIKIN IND LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] As the prior art of using polymerizable monomers containing short-chain Rf groups, WO03 / 062521 discloses a water and oil repellent composition containing (meth)acrylates with short-chain Rf groups and VCl or VdCl copolymer to improve water resistance, but the water and oil repellency and water resistance of this composition are not sufficient, and its long-term storage stability and stability to inclusions are not sufficient
In addition, WO02 / 083809 and WO04 / 035708 also describe examples of using polymerizable monomers containing short-chain Rf groups, but their water and oil repellency and water resistance are insufficient.
[0011] According to the above-mentioned literature, it is known that in a polymer having polymerized units of acrylates containing Rf groups, if the chain length of the Rf groups becomes shorter, the water and oil repellency decreases.
In addition, in the research of the inventors, it has also been found that if the chain length of the Rf group is simply shortened, the amount of outflow water will increase significantly (decrease in water resistance) in a rainfall durability test such as the Bundesmann test.
[0012] That is to say, in the prior art, an aqueous dispersion of a water- and oil-repellent agent that satisfies the purpose of reducing the environmental load and also satisfies high water resistance cannot be obtained by using an alternative compound having a chemical skeleton structure different from that of a telomer.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0202] Put in 38.1g of C 4 f 9 CH 2 CH 2 OCOC (CH 3 )=CH 2 (hereinafter referred to as 9FMA), 14.6g of stearyl acrylate (hereinafter referred to as StA), 1.2g of N-methylolacrylamide (hereinafter referred to as N-MAM), 0.6g of 3-chloro-methacrylic acid 2-hydroxypropyl ester (hereinafter referred to as CHPMA), 0.8 g of polyoxyethylene-polyoxypropylene alkyl ether (nonionic surfactant, HLB value 12) (EBD-12 manufactured by NOF Corporation), 3.0 g of polyoxyethylene sorbitan monolaurate (HLB value 17) (LT-221 manufactured by NOF Corporation), 1.4 g of cetyltrimethylammonium chloride (STMAC), 16 g of Tris Propylene glycol, 70 g of ion-exchanged water, 0.03 g of dodecyl mercaptan, and 0.12 g of acetic acid. After heating to 60° C. and predispersing with a homomixer, emulsification was performed for 15 minutes with an ultrasonic emulsifier.

[0203] The emulsion was transferred to a 300ml four-necked flask (with a stirrer, condenser, thermometer, and nitrogen inlet tube), and...

Embodiment 2～5、 comparative example 1～6

[0206] It was operated in the same manner as in Example 1, except that the type and amount of the emulsifier were changed as shown in Table 3, thereby obtaining a water and oil repellent composition with a solid content of 30%. Each property was evaluated about the obtained composition. The results are shown in Table 3.

[0207] table 3

[0208] Emulsifier

HLB value

Example

comparative example

1

2

3

4

5

1

2

3

4

5

6

No

Leave

son

type

surface

noodle

live

sex

agent

PP-40R(b1)

LP-20R(b1)

LT-221(b1)

7

9

17

3.0

3.0

3.0

0.8

3.0

0.8

EBD-12(b2)

EBD-9(b2)

EBD-4(b2)

BT-20(b2)

Prolon 204(b2)

BO-20(b2)

BO-50(b2)

BS-20(b2)

12

9

4

16

5

17

...

Embodiment 6

[0222] Put in 32.7g of C 4 f 9 CH 2 CH 2 OCOC (CH 3 )=CH 2 (hereinafter referred to as 9FMA), 20.0g of stearyl acrylate (hereinafter referred to as StA), 1.2g of N-methylolacrylamide (hereinafter referred to as N-MAM), 0.6g of 3-chloro-methacrylic acid 2-hydroxypropyl ester (hereinafter referred to as CHPMA), 0.8 g of polyoxyethylene-polyoxypropylene alkyl ether (nonionic surfactant, HLB value 9) (EBD-9 manufactured by NOF Corporation), 3.0 g of polyoxyethylene sorbitan monolaurate (HLB value 17) (LT-221 manufactured by NOF Corporation), 1.4 g of cetyltrimethylammonium chloride, 16 g of tripropylene glycol, 70 g ion-exchanged water, 0.03g of dodecyl mercaptan, and 0.12g of acetic acid. After heating to 60° C. and predispersing with a homomixer, emulsification was performed for 15 minutes with an ultrasonic emulsifier.

[0223] The emulsion was transferred to a 300ml four-necked flask (with a stirrer, condenser, thermometer, and nitrogen inlet tube), and after nitrogen r...

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Abstract

Disclosed is an aqueous water-repellent / oil-repellent composition containing the following components (A), (B) and (C). Fluorine-containing copolymer (A): a copolymer containing a polymerizable monomer (a1) having a perfluoroalkyl group with 1-6 carbon atoms or a perfluoroalkenyl group wherein the amount of (a1) is not less than 20% by weight relative to the copolymer. Surfactant (B): a surfactant essentially containing a sorbitan ester or an alkylene oxide addition product thereof. Aqueous medium (C): a medium substantially containing water only or water and a water-soluble organic solvent.

Description

technical field [0001] The present invention relates to a water and oil repellent composition, more specifically, to a water and oil repellent composition with excellent water resistance. Background technique [0002] Conventionally, a polymer comprising a polymerizable monomer unit having a polyfluoroalkyl group has been widely used as a water and oil repellent. In order to obtain copolymers containing polyfluoroalkyl groups, polymerization methods such as bulk polymerization, solution polymerization, suspension polymerization, and emulsion polymerization can be used, among which solution polymerization and emulsion polymerization are more commonly used. Among them, in view of the problems on the working environment and the impact on the environment, the aqueous dispersion prepared by emulsion polymerization is more ideal than the solvent dispersion prepared by solution polymerization. [0003] Fiber products treated with water and oil repellents are widely used in daily c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D157/00D06M15/277C09K3/18D06M15/53
Inventor 柏木正人
Owner DAIKIN IND LTD
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