Fluorine-containing block copolymer and preparation method and application thereof

A technology of block copolymers and copolymers, applied in textiles, papermaking, fiber treatment, etc., can solve the problems of insufficient oil repellency, low decontamination and solubility of antifouling processing agents, etc., and achieve good decontamination , Excellent oil repellency effect

Active Publication Date: 2014-04-02
太仓中化环保化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] When a methacrylic comonomer with a perfluoroalkyl group having less than 8 carbon atoms is used, the antifouling agent may have insufficient oil repellency, or may have sufficient oil repellency but poor detergency and solubility

Method used

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  • Fluorine-containing block copolymer and preparation method and application thereof
  • Fluorine-containing block copolymer and preparation method and application thereof
  • Fluorine-containing block copolymer and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] In a 500ml four-necked flask, 100g of methoxypolyethylene glycol (EO10mol) monomethacrylate, 100g of dipropylene glycol monomethyl ether, 0.5g of ethyl α-bromoacetate, N,N,N', N,'N''-pentamethyldiethylenetriamine 1.0g, cuprous bromide 0.8g, nitrogen replacement, the oxygen content dropped to below 100ppm, the temperature was raised to 80°C, and after 6 hours of reaction, passed The conversion rate detected by gas chromatography was greater than 98%, and then 10g of hydroxyethyl methacrylate and 10g of N,N-dimethylaminoethyl methacrylate were injected into the system. After 3 hours of reaction, the conversion rate was detected by gas chromatography to be greater than 98%. , and then inject 100g of perfluorohexylethyl methacrylate (6FMA) into the system. After 20 hours of reaction, the conversion rate was detected by gas chromatography to be greater than 99%. Air was introduced, the temperature was lowered, and the reaction was terminated. The product was passed through an...

Embodiment 2～6

[0045] According to the monomer composition and proportion shown in the table, the same steps as in Example 1 were repeated to finally obtain a solution with a solid content of 20%, and the composition of the copolymer is shown in Table 3.

[0046] table 3

[0047]

Embodiment 2～6 and comparative example 1～6

[0060] The fluorine-containing block copolymer solutions were respectively replaced with the substances obtained in Examples 2-6 and Comparative Examples 1-6. In addition, the treatment liquid was prepared according to the same steps as in Test Example 1, cloth treatment was carried out, and the removal rate was measured. Stain and oil repellency. The results are shown in Table 4.

[0061] Table 4

[0062]

[0063]

[0064] Note: Numbers A to B in the table indicate the performance between A and B; HL10 and HL20 indicate after washing 10 times and 20 times respectively.

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Abstract

The invention relates to a fluorine-containing block copolymer and a preparation method and application thereof. The weight-average molecular weight of the polymer is 5,000-100,000, and the polymer is prepared by polymerizing 15-65wt% of monomer A, 10-80wt% of monomer B, 0.5-15wt% of monomer C and 0.5-10wt% of monomer D in an atom transfer radical polymerization (ATRP) way. Compared with the traditional fluorine-containing random copolymer obtained by common free radical polymerization, the fluorine-containing block copolymer with fewer than 8 carbon atom in perfluoroalkyl group and synthesized in an ATRP way integrates the characteristics of oil repellency, antifouling property, decontamination and good solubility when used as an antifouling agent and a decontamination agent; moreover, under the condition of the same dosage of perfluoroalkyl group, better oil repellency can be obtained.

Description

technical field [0001] The invention relates to a fluorine-containing block copolymer, a preparation method and application thereof. Background technique [0002] As an antifouling agent that imparts oil repellency and antifouling properties to fabric fibers and the like, and that easily removes stains adhering to fibers by washing, etc., it is known that such antifouling agents are generally composed of acrylate-based monofluorocarbons having a perfluoroalkyl group. The body is obtained by copolymerization with a compound containing a hydrophilic group. [0003] However, most of the polyfluoroalkyl groups used in these processing agents have a carbon number of 8 or more. Considering the impact on the environment, the carbon number of the perfluoroalkyl group in the compound with a perfluoroalkyl group is preferably less than 8. 8. [0004] When a methacrylic comonomer with a perfluoroalkyl group having less than 8 carbon atoms is used, the antifouling finishing agent has ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F293/00C08F220/28C08F220/34C08F220/22C08F6/08D06M15/277
Inventor 顾子旭陈俊梁成锋李全义李进
Owner 太仓中化环保化工有限公司
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