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A polyamide antibacterial agent, a preparing method and applications thereof

An antibacterial agent and polyamide technology, which is applied in the field of preparation, antibacterial finishing of fabrics, and polyamide antibacterial agents, can solve the problems of antibacterial activity and durability, and achieve superior comprehensive finishing performance, convenient dispersion, and easy access to raw materials Effect

Active Publication Date: 2014-09-10
JIANGSU HUAJIA SILK +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The problem to be solved by the present invention is to overcome the deficiencies in the antibacterial activity and durability of the haloamine antibacterial agents existing in the prior art, and to provide a polyamide antibacterial agent with high antibacterial efficiency, long-lasting bactericidal function, and superior comprehensive performance and its preparation method, and used as an antibacterial finishing agent, applied to fabric antibacterial finishing

Method used

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  • A polyamide antibacterial agent, a preparing method and applications thereof
  • A polyamide antibacterial agent, a preparing method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] 1, N -(3-Triethoxysilylpropyl)- N′ -( N -Heptylurea- N″ -Ethyl)succinamide Synthesis

[0042] (1) N- (3 - Synthesis of triethoxysilylpropyl)-carboxypropyl formamide

[0043] 22.1 g of 3-aminopropyltriethoxysilane (APTES), 100 g of tetrahydrofuran (THF) and 10 g of succinic anhydride were added into a 1000 mL three-necked flask, under nitrogen protection, and reacted at room temperature for 18 h. Wash with methanol, filter to remove a small amount of solid impurities, and remove the solvent to obtain a colorless, transparent and viscous compound N- (3 - Triethoxysilylpropyl)-carboxypropyl formamide. FTIR (cm -1 ): 3367 (NH), 3293 (OH), 2974 (CH 3 ), 2932 (CH 2 ), 2886 (CH 2 ), 1730 (CO, acid), 1648 (CO, amidⅠ), 1553 (NH, amideⅡ), 1080 (Si-O-Et). 1 H NMR (ppm) (400 MHz, DMSO-d 6 ): δ 0.56 (t, J =4.8 Hz, 2H, Si-C H 2 -), 1.16 (t, J =4.6Hz, 9H, -C H 3 ), 1.41-1.46 (m, J =5.0 Hz, 2H, CH 2 -C H 2 -CH 2 -), 2.29 (t, J =6.6 Hz, 2H, CO-C H 2 )...

Embodiment 2

[0057] 1, N -(3-Trimethoxysilylpropyl)- N′ -( N -Heptylurea- N″ -Ethyl)succinamide Synthesis

[0058] (1) N- (3 - Synthesis of trimethoxysilylpropyl)-carboxypropyl formamide

[0059] Add 16.8 g of 3-aminopropyltrimethoxysilane (APTMS), 150 g of tetrahydrofuran (THF) and 10 g of succinic anhydride into a 500 mL three-necked flask, and react at room temperature for 18 h under nitrogen protection. Wash with methanol, filter to remove a small amount of solid impurities, and remove the solvent to obtain a colorless, transparent and viscous compound N- (3 - Trimethoxysilylpropyl)-carboxypropyl formamide. FTIR (cm -1 ): 3366 (NH), 3293 (OH), 2977 (CH 3 ), 2930~2888 (CH 2 ), 1731 (-C=O, acid), 1649 (-C=O, amidⅠ), 1553 (NH, amideⅡ), 1081 (Si-O-Et).

[0060] (2) N -(3-Trimethoxysilylpropyl)- N′ - Synthesis of aminoethyl-succinamide

[0061] Add 27.5 g to a 500 mL three-neck flask N- (3 - Trimethoxysilylpropyl)-carboxypropyl formamide and 150 g tetrahydrofuran, unde...

Embodiment 3

[0070] 1, N -(3-Triethoxysilylpropyl)- N′ -( N -Lauryl urea- N″ -Ethyl)succinamide Synthesis

[0071]In the 500 mL three-necked flask, add the obtained in embodiment 1 N -(3-Triethoxysilylpropyl)- N′ -Aminoethyl-succinamide 7.26 g and 50 g dehydration acetone, react at 45 ℃, add 0.1 g dibutyltin dilaurate (DBTDL) dropwise, slowly add 6.18 g dodecyl isocyanate in 80 g acetone solution ( 30 min dropwise), reflux for 2 h. Acetone was removed under reduced pressure to obtain light yellow oily substance N -(3-Triethoxysilylpropyl)- N′ -( N -Lauryl urea- N″ - ethyl) succinamide. FTIR (cm -1 ): 3335~3329 (NH), 2920~2856 (CH 2 ), 1698 (CO, amidⅠ), 1625 (CO, carbamido), 1542 (NH, amideⅡ), 1079 (Si-O-Et).

[0072] The molecular structure of the product is as follows:

[0073] .

[0074] According to antibacterial finishing and antibacterial property test in embodiment 1, record antibacterial cotton fabric to Gram-negative bacteria escherichia coli Escherichia coli...

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Abstract

The invention discloses a polyamide antibacterial agent, a preparing method and applications thereof. According to the polyamide antibacterial agent and the preparing method, an aminoalkyl silane coupling agent is adopted as a raw material and reacted with succinic anhydride to obtain N-(trialkoxysilanyl)-carboxypropyl methanamide, then carboxyl is reacted with ethylenediamine to obtain N-(trialkoxysilanyl)-N'-aminoethyl-succinamide with two acylamino groups, the primary amino and isocyanate are reacted into arbamido so as to obtain N-(trialkoxysilanyl)-N'-(N'''-alkyl urea-N''-ethyl)succinimide, and the product is aliphatic polyamide with a linear structure. By introduction of a plurality of nitrogen-hydrogen bonds (N-H) into the molecular structure, N-H can be halogenated to obtain a plurality of nitrogen-halogen bonds (N-X) on the fiber surface when the polyamide is used for fabric finishing, and the polyamide can have good antibacterial effects when the concentration is low. In addition, the three alkoxysilanyl active groups in the polyamide silane structure can be reacted with the fiber surface, thus providing water washing tolerance, durability, and excellent comprehensive finishing properties.

Description

technical field [0001] The invention relates to an antibacterial agent, a preparation method and application thereof, in particular to a polyamide antibacterial agent, a preparation method and application to antibacterial finishing of fabrics. Background technique [0002] Commonly used textile antibacterial agents mainly include quaternary ammonium salts, quaternary phosphonium salts, metals and their oxides, chitosan and haloamine antibacterial agents, etc. Most of the antibacterial agents have some shortcomings or deficiencies, such as washability, Poor stability, certain toxicity, etc., which greatly restrict their application. Quaternary ammonium antibacterial agents have disadvantages such as low bactericidal efficiency, bacteria resistance, and difficult degradation; most metals and their oxides are highly toxic to the body and the environment. Although chitosan and its derivatives are environmentally friendly, their antibacterial properties are greatly affected by t...

Claims

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Application Information

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IPC IPC(8): C07F7/18A01N55/10A01P1/00D06M13/513D06M101/06
Inventor 李战雄吴林臧雄蔡露
Owner JIANGSU HUAJIA SILK
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