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Preparation method of antibacterial hydrophobic complexing agent for polyester fibers

A polyester fiber and compounding agent technology, applied in the preparation of organic compounds, fiber types, fiber treatment, etc., can solve the problems of poor light stability, non-persistent antibacterial effect, environmental pollution, etc., and achieve easy high-temperature processing and good dispersibility. , the effect of low price

Inactive Publication Date: 2015-04-08
HANGZHOU BEST CHEM FIBER
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Silver-based antibacterial agents are easy to oxidize and have poor light stability. After long-term use, the oxidized products will turn black, and the heavy metal ions released during use will continue to increase, which will easily pollute the environment.
Natural organic antibacterial agents have poor heat resistance, and the antibacterial effect is not durable

Method used

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  • Preparation method of antibacterial hydrophobic complexing agent for polyester fibers
  • Preparation method of antibacterial hydrophobic complexing agent for polyester fibers
  • Preparation method of antibacterial hydrophobic complexing agent for polyester fibers

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Embodiment 1: the synthesis of carboxypolysiloxane

[0034] Take 604.125g (4.5mol) of methyldiethoxysilane, 216.18g (3mol) of acrylic acid, and 0.082g of platinum dioxide into a three-neck flask with a stirrer, stir evenly at room temperature, raise the temperature to 85°C, and react for 23h End; suction filtration, vacuum distillation to remove impurities and low boilers, then vacuum dry at 55°C for 24 hours to obtain a carboxyl organosilicon intermediate; take half of the mass of this intermediate and slowly add it dropwise to excess sulfuric acid with a volume fraction of 40% In the solution, the dropping speed is strictly controlled. After the dropping is completed, the reaction is completed at 23°C for 2 hours; repeated washing with distilled water until the pH value of the lotion is 7, suction filtration, and vacuum drying at 55°C for 24 hours to obtain carboxypolysiloxane alkyl;

[0035] Characterization method:

[0036] Fourier Transform Infrared Spectroscopy:...

Embodiment 2

[0046] Embodiment 2: the synthesis of monoguanidine compound

[0047] Take 404.265g (1.5mol) of octadecylamine and 108.09g (1.8mol) of glacial acetic acid in a three-necked flask with a stirrer, mix well and then raise the temperature to 110°C, stir and add 94.5g (water pump) dropwise under air pump ( 2.25mol) cyanamide, maintain the reaction temperature at 110°C; after the dropwise addition, continue the reaction for 30 minutes, stop heating, and cool; add 2 times the volume of water, heat to dissolve, adjust the pH value to about 10 with sodium hydroxide, and let stand After separating the upper layer substance, dissolve it with 2 times the volume of water, heat it in a water bath, prepare an acetic acid solution with a mass fraction of 36% with glacial acetic acid to adjust the pH value of the system to 7, leave it to separate the product, and dry it in vacuum after rotary evaporation; Obtain monoguanidine base compound with ethanol recrystallization;

[0048] Characteriza...

Embodiment 3

[0054] Embodiment 3: condensation reaction of carboxypolysiloxane and monoguanidine compound

[0055] The carboxyl content of carboxypolysiloxane measured by acid-base titration is 7.60 mmol / g;

[0056] Take 131.58g carboxypolysiloxane, 404.3g (1.3mol) monoguanidine compound, 286.57g (1.69mol) 6-chloro-1-hydroxybenzotriazole (6-Cl-HOBt) In the there-necked flask, add a certain amount of ethyl acetate to dissolve, cool down to 1°C; slowly dropwise add ethyl acetate solution containing 157.86g (1.56mol) of triethylamine (the concentration of triethylamine is 2.5mmol / 10ml), naturally Warming up to room temperature, stirring for 12 hours, filtering, washing with ethyl acetate and evaporating the ethyl acetate under reduced pressure to obtain an antibacterial and hydrophobic composite agent for polyester fibers.

[0057] Characterization method:

[0058] Fourier Transform Infrared Spectroscopy: The liquid sample is directly dropped on the transparent salt sheet, and the solid sam...

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Abstract

The invention discloses a preparation method of an antibacterial hydrophobic complexing agent for polyester fibers, belonging to the field of an antibacterial agent synthetic technology. The preparation method comprises the following steps of: synthesizing carboxylpolysiloxane, wherein the carboxylpolysiloxane is generated from a hydrogen-containing saline and an acrylic acid; preparing a monoguanidyl compound, wherein the monoguanidyl compound is obtained from cyanamide and alkylamine; and carrying out condensation reaction of carboxylpolysiloxane and the monoguanidyl compound so as to obtain the antibacterial hydrophobic complexing agent. According to the invention, polysiloxane with functions of dewatering, decontaminating and the like and groups with antibacterial functions are introduced to a high polymer long chain through a way of copolymerization, so that the preparation method of the antibacterial hydrophobic complexing agent for the polyester fibers has the advantages of high efficiency, broad spectrum, good dispersibility, cheap price and the like, is free from volatility, can be easily processed at high temperature, is easy to store.

Description

technical field [0001] The invention belongs to the technical field of antibacterial agent synthesis, and in particular relates to a preparation method of an antibacterial and hydrophobic composite agent for polyester fibers. Background technique [0002] Silicone softener, used in fabric finishing can not only improve the softness, elasticity and smoothness of the fiber matrix, but also endow the fabric with good hydrophobicity and detergency, and the light-colored or white fabric treated with it has good whiteness , and has a hemp-like feel, so it is unique in the stylized finishing of fabrics. [0003] At present, there are many kinds of antibacterial agents, mainly including five categories, inorganic antibacterial agents, organic antibacterial agents, inorganic and organic composite antibacterial agents, natural antibacterial agents, and polymer antibacterial agents. Silver-based antibacterial agents are easy to oxidize and have poor light stability. After long-term us...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G77/388C08G77/14C08G77/08C07C277/08D06M15/643D06M101/32
Inventor 魏燕琼徐红波秦丹王莉君於俊杰丁益萍李明刚邵建农孙志超王华平王朝生李建武高旭东
Owner HANGZHOU BEST CHEM FIBER
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