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Antibacterial coating with phosphatase response function, functional material with antibacterial coating and preparation method of functional material

A technology of antibacterial coatings and functional materials, applied in coatings, antifouling/underwater coatings, chemical instruments and methods, etc., can solve the problems of reducing the sterilization effect, improve hydrophilicity, easy operation, prevent bacteria and The effect of pollutant adhesion

Active Publication Date: 2021-12-17
WEIGAO HLDG +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, actively attacking surfaces often suffers from problems related to the accumulation of dead bacteria and debris, which not only shields the functional groups, thereby reducing the bactericidal effect, but also acts as a conditioning film to provide nutrients for subsequent bacterial adhesion, resulting in immunity. reaction or inflammation

Method used

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  • Antibacterial coating with phosphatase response function, functional material with antibacterial coating and preparation method of functional material
  • Antibacterial coating with phosphatase response function, functional material with antibacterial coating and preparation method of functional material
  • Antibacterial coating with phosphatase response function, functional material with antibacterial coating and preparation method of functional material

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preparation example Construction

[0165] The present invention also provides a method for preparing a functional material with an antibacterial coating described in any one of the above technical solutions, characterized in that it comprises the following steps:

[0166] 1) will have R 1 The hydroxybenzophenone derivative monomer with the H structure, the pH regulator, the catalyst and the epoxyhaloalkane having the structure of formula (III) are mixed and reacted, and the first intermediate is obtained after precipitation;

[0167]

[0168] Wherein, X is selected from Cl, Br or I;

[0169] 2) reacting the first intermediate obtained in the above steps, the monomer having the structure of formula (IV), the pH adjustment solution and the first solvent again to obtain the second intermediate;

[0170]

[0171] 3) After continuing to react the second intermediate, phosphorus trichloride, organic base and second solvent obtained in the above steps, a zwitterionic polymer having a structure shown in formula ...

Embodiment 1

[0280] a. Mix 4g of 3-hydroxymethylbenzophenone, 5.2g of potassium carbonate, 0.3g of tetrabutylammonium bromide and 9.25g of epichlorohydrin in a flask and react in an oil bath at 110°C for 24h. After the reaction The product of the product was diluted with 100mL ethyl acetate, and the product was extracted three times with 50mL saturated brine, the organic phase was collected and dried with anhydrous sodium sulfate, and the solvent was spin-dried by a rotary evaporator to obtain a yellow oily product;

[0281] b. 3 g of the product of step a and 6.42 g of N,N-dimethylhexylamine were dissolved in 50 mL of methanol, and 2.5 mL of hydrochloric acid-dioxane solution with a concentration of 2 mol / L was added dropwise to the solution, and reacted at 80°C for 9 hours The product was evaporated to dryness by rotary evaporation, and the product was purified with a chromatographic silica gel column, and the purified product was collected;

[0282] c. The product of step b is dissolved...

Embodiment 2

[0286] a. Dissolve 3.8 g of 3-bromobenzophenone and 2.5 g of N-ethylethanolamine in 50 mL of dimethyl sulfoxide solution, and heat at 80° C. for 12 h. Then use 200mL of n-hexane to precipitate the product, then wash the product with 50mL of n-hexane for 3 times and then dry it in vacuum for 12h;

[0287] b. Dissolve 3.5 g of the product in step a and 6.8 g of bromododecane in 70 mL of dimethyl sulfoxide, and react at 60° C. for 8 h. Precipitate the product with 300mL ether, wash with 50mL ether several times after centrifugation, and dry in vacuum for 12h.

[0288] c. Dissolve 3 g of the product of step b in 70 mL of methanol, add dropwise 0.022 mL of phosphorus trichloride and 0.05 mL of pyridine, react at room temperature for 5 h, and remove the solvent by rotary evaporation, wash the product with saturated saline, and finally use a chromatographic silica gel column to Product purification.

[0289] d. Dissolve 1 g of the zwitterionic small molecule prepared in step c in a...

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Abstract

The invention provides an antibacterial coating. The antibacterial coating comprises a zwitterionic polymer with a structure as shown in a formula (I) or a formula (II). The micromolecular zwitterionic polymer designed by the invention can conform to the development process of bacteria. Anions carried by initial phosphate radicals of photoreaction micromolecules and cations carried by quaternary ammonium salt form a zwitterionic surface, and when the surface of the material is infected by bacteria, the surface of the material at the beginning is a passive defensive surface, and the function of resisting bacterial adhesion is achieved. Once phosphatase produced by metabolism due to growth and reproduction of bacteria can easily cause release of phosphate radicals on the surface, the surface is immediately converted into a cationic sterilization surface. The surface not only effectively prevents the initial adhesion of bacteria, but also has good biocompatibility to the organism, and more importantly, when the initial defensiveness is broken through, the surface can be converted into an excellent sterilization surface. The preparation process is simpler, low in equipment requirement, easy to operate and high in feasibility.

Description

technical field [0001] The invention belongs to the field of antibacterial medical devices, and relates to an antibacterial coating, a functional material with an antibacterial coating and a preparation method thereof, in particular to an antibacterial coating with a phosphatase response function, and an antibacterial coating with a phosphatase response function functional materials and their preparation methods. Background technique [0002] Bacteria are ubiquitous in the environment and in the human body, and pathogenic bacteria that cause human diseases pose a serious threat to public health. The most common bacterial-derived diseases are foodborne diseases, urinary tract infections, sexually transmitted infections, and nosocomial infections. The adhesion, growth and reproduction of bacteria on the surface of materials, and even the formation of biofilms are the main reasons for the failure of implantation of medical materials. Similarly, the adhesion, proliferation and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D5/14C08J7/06C07F9/09C08L83/04C08L27/18
CPCC09D5/14C08J7/06C07F9/091C08J2383/04C08J2327/18Y02A50/30
Inventor 闫顺杰张桢焱周容涛栾世方万雪孙振龙张晶张帅殷敬华
Owner WEIGAO HLDG