Sterically hindered amine light stabilizer with antibacterial function and preparation method thereof

A technology of light stabilizer and hindered amine, which is applied in the field of hindered amine light stabilizer and its preparation, can solve the problems of lack of successful examples, and achieve simple and easy reaction method, good antibacterial performance and good light stability performance Effect

Active Publication Date: 2020-06-19
YANTAI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During this research process, researchers paid more attention to the development of compound additives, and less attention was paid to the research and development of multifunctional high-efficiency additives formed by bonding different functional groups in the same molecule, and successful examples were even scarcer.

Method used

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  • Sterically hindered amine light stabilizer with antibacterial function and preparation method thereof
  • Sterically hindered amine light stabilizer with antibacterial function and preparation method thereof
  • Sterically hindered amine light stabilizer with antibacterial function and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A preparation method of a hindered amine light stabilizer with antibacterial function, the synthesis reaction formula is as follows:

[0026]

[0027] The preparation steps are as follows:

[0028] (1) Dissolve 2.75g of phosphorus trichloride in 50mL of dichloromethane solution, add it to a 250mL four-neck flask, add 6.90g of triethylamine, and slowly add 7.69g of 1- Chloro-2,2,6,6-tetramethylpiperidinol in dichloromethane (60 mL), after 4 hours of dropwise addition, keep at 15°C for 3 hours;

[0029] (2) Add 3.75g of a dichloromethane solution (30mL) of 1-methoxy-2,2,6,6-tetramethylpiperidinol dropwise to the reaction system of step (1), and raise the temperature after the addition is completed React at 30°C for 3h;

[0030] (3) The reaction system was washed three times with 100 mL of deionized water, and the organic phase was evaporated to remove the solvent under reduced pressure to obtain a yellow solid, which was washed with 30 mL of absolute ethanol and filt...

Embodiment 2

[0033] A hindered amine light stabilizer with antibacterial function, the structural formula is as follows:

[0034]

[0035] The preparation steps are as follows:

[0036] (1) Dissolve 2.75g of phosphorus trichloride in 50mL of dichloromethane solution, add it to a 250mL four-neck flask, then add 10mL of pyridine, slowly add 7.49g of 1-propoxyl dropwise to the reaction flask under stirring at 15°C Dichloromethane solution (50 mL) of 2,2,6,6-tetramethylpiperidinol, after 3 hours of dropwise addition, keep at 15°C for 3 hours;

[0037] (2) Add 3.83g of 1-chloro-2,2,6,6-tetramethylpiperidinol in dichloromethane solution (30mL) dropwise to the reaction system of step (1), and raise the temperature to 30 ℃ reaction 4h;

[0038] (3) The reaction system was washed three times with 100 mL of deionized water, and the organic phase was evaporated to remove the solvent under reduced pressure to obtain a yellow solid, which was washed with 30 mL of absolute ethanol and then suction-...

Embodiment 3

[0041] A preparation method of a hindered amine light stabilizer with antibacterial function, the preparation reaction formula is as follows:

[0042]

[0043] The preparation steps are as follows:

[0044] (1) Dissolve 2.75g of phosphorus trichloride in 50mL of dichloromethane solution, add it to a 250mL four-necked flask, then add 6.9g of triethylamine, slowly add 9.44g of 1 -Bromo-2,2,6,6-tetramethylpiperidinol in dichloromethane (50 mL), after 3 hours of dropwise addition, keep at 15°C for 3 hours;

[0045] (2) Add 5.11g of 1-cyclohexyloxy-2,2,6,6-tetramethylpiperidinol in dichloromethane solution (30mL) dropwise to the reaction system of step (1). Raise the temperature to 30°C for 4 hours;

[0046] (3) The reaction system was washed three times with 100 mL deionized water, and the organic phase was evaporated to remove the solvent under reduced pressure to obtain a light yellow solid, which was washed with 30 mL of absolute ethanol and filtered with suction, and the ...

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Abstract

The invention belongs to the field of polymer material assistants, and particularly relates to a sterically hindered amine light stabilizer with an antibacterial function and a preparation method thereof. According to the method, phosphorus trichloride with relatively high reaction activity is used as a functional group bonding reaction starting raw material, by the simple and easy reaction method, the novel multifunctional stabilizer series compounds of alkoxy sterically hindered amine with photoaging resistance and N-halogenated sterically hindered amine with antibacterial performance are obtained, N-halogenated sterically hindered amine groups and alkoxy sterically hindered amine groups are bonded by utilizing phosphite ester structures in molecules, and two different functional groupsin the molecules show a positive synergistic effect, show good light stability and also show good antibacterial performances.

Description

technical field [0001] The invention belongs to the field of polymer material additives, in particular to a hindered amine light stabilizer with antibacterial function and a preparation method thereof. Background technique [0002] In order to improve the performance of molecular materials and extend the service life, various additives need to be added to polymer materials. Usually, polymer material additives need to be compounded or added in batches during the processing of polymer materials during use, and the overall process is very complicated. [0003] Among them, the light stabilizer refers to the auxiliary agent that can inhibit or slow down the addition of polymer materials due to photooxidation. The hindered amine light stabilizer is a kind of light stabilizer with excellent performance. Due to its excellent performance, hindered amines have become the mainstream of light stabilizers. [0004] Studies have shown that different functional groups may exhibit better...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07F9/59A01N57/16A01P1/00C08K5/52C08L23/06C08L23/12
CPCC07F9/59A01N57/16C08K5/52C08L2201/08C08L23/06C08L23/12
Inventor 曾涛李林
Owner YANTAI UNIV
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