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
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[0040] Example 1:
[0041] 1, N -(3-Triethoxysilylpropyl)- N′ -( N -heptylurea- N″ -Ethyl)succinamide synthesis
[0042] (1) N- (3 - Synthesis of triethoxysilylpropyl)-carboxypropylformamide
[0043] 22.1 g of 3-aminopropyltriethoxysilane (APTES), 100 g of tetrahydrofuran (THF) and 10 g of succinic anhydride were added to a 1000 mL three-necked flask, and the reaction was carried out 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 - Triethoxysilylpropyl)-carboxypropylcarboxamide. 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 =4.6 Hz, 9H, -C H 3 ), 1.41-1.46 (m, J =5.0 Hz, 2H, CH 2 -C H 2 -CH 2 -...
Example Embodiment
[0056] Example 2:
[0057] 1, N -(3-Trimethoxysilylpropyl)- N′ -( N -heptylurea- N″ -Ethyl)succinamide synthesis
[0058] (1) N- (3 - Synthesis of trimethoxysilylpropyl)-carboxypropylformamide
[0059] 16.8 g of 3-aminopropyltrimethoxysilane (APTMS), 150 g of tetrahydrofuran (THF) and 10 g of succinic anhydride were added to a 500 mL three-necked flask, and the reaction was carried out 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)-carboxypropylcarboxamide. 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-necked flask N- (3 - Trimethoxysilylpropyl)-carbo...
Example Embodiment
[0069] Example 3:
[0070] 1, N -(3-Triethoxysilylpropyl)- N′ -( N -Dodecyl Urea- N″ -Ethyl)succinamide synthesis
[0071]In the 500 mL three-necked flask, add the obtained in Example 1 N -(3-Triethoxysilylpropyl)- N′ - 7.26 g of aminoethyl-succinamide and 50 g of dehydrated acetone, react at 45 °C, add 0.1 g of dibutyltin dilaurate (DBTDL) dropwise, and slowly add 6.18 g of dodecyl isocyanate in 80 g of acetone solution ( The dropwise addition was completed in 30 min), and the reaction was refluxed for 2 h. Decompression to remove acetone to get light yellow grease N -(3-Triethoxysilylpropyl)- N′ -( N -Dodecyl 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 the antibacterial finishing and antibacterial performance test in Example 1, it was measured that th...
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