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A kind of antibacterial water-based polyurethane adhesive and preparation method thereof

A water-based polyurethane and adhesive technology, applied in the direction of polyurea/polyurethane adhesives, adhesives, adhesive types, etc., can solve the problems of increased volume of antibacterial active ingredients, reduced antibacterial effect, and increased difficulty of antibacterial active ingredients

Active Publication Date: 2021-04-23
福建华夏蓝新材料科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The antibacterial active ingredient is embedded into the polymer chain through chemical reaction, and the volume of the antibacterial active ingredient increases, which increases the difficulty of the antibacterial active ingredient entering the inside of bacteria, fungi or viruses, resulting in reduced antibacterial effect, or even basically no effect

Method used

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  • A kind of antibacterial water-based polyurethane adhesive and preparation method thereof
  • A kind of antibacterial water-based polyurethane adhesive and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] (1) Add 1 mol of polyoxyethylene ether-50 (PEG-10) and 0.02 mol of 2,2-dimethylolpropionic acid into the reaction kettle, heat up to 120°C, vacuumize to remove moisture, and reach the weight ratio of moisture 0.03%; cool down to 45°C, add 2.02 mol of hexamethylene diisocyanate to the system, and raise the temperature to 100°C, react for 0.5 hours and cool down to 40°C to obtain an isocyanate prepolymer;

[0030] (2) Add 2100g methyl ethyl ketone to the isocyanate prepolymer to reduce the viscosity of the system, then add 2 mol hydroxypropyl methacrylate, raise the temperature to 100°C, react for 2 hours and then cool down to 40°C;

[0031] (3) Dissolve 2 mol of maleimide and 0.1 mol of azobisisobutyronitrile in 450 g of butanone, and slowly add it dropwise to the system prepared in step (2), keep the temperature at 80°C for 0.5 hours, then cool down to 3°C; Slowly add 3200g of 10% bromobutanone solution dropwise, control the dropwise temperature <10°C, raise the tempera...

Embodiment 2

[0035](1) Add 1 mol of polyoxypropylene ether-30 (PPG-30) and 0.1 mol of 2,2-dimethylolpropionic acid into the reaction kettle, heat up to 150°C, vacuumize to remove moisture, and reach the weight ratio of moisture 0.07%; cool down to 40°C, add 2 mol 2,4-toluene diisocyanate to the system, and raise the temperature to 60°C, react for 8 hours and cool down to 40°C to obtain an isocyanate prepolymer;

[0036] (2) Add 2800g methyl ethyl ketone to the isocyanate prepolymer to reduce the viscosity of the system, then add 1.8 mol hydroxypropyl acrylate, heat up to 90°C, react for 7 hours and cool down to 40°C;

[0037] (3) Dissolve 1.8 mol of maleimide and 0.08 mol of azobisisobutyronitrile in 500 g of butanone, and slowly add it dropwise to the system prepared in step (2), keep the temperature at 55°C for 6 hours, then cool down to 0°C; Slowly add 870g of 10% bromobutanone solution dropwise, control the dropwise temperature <10°C, raise the temperature to 25°C, and stir for 2 hours...

Embodiment 3

[0041] (1) Add 1 mol of polyoxyethylene-20-polyoxypropylene-20 copolymer (PEG-20-co-PPG-20) and 0.08 mol of 2,2-dimethylolbutyric acid into the reactor, and heat up to 150 ℃, vacuumize to remove moisture until the weight ratio of moisture is 0.09%; cool down to 50°C, add 1.5 mol diphenylmethane diisocyanate to the system, and raise the temperature to 70°C, react for 3 hours and then cool down to 40°C to obtain isocyanate pre- Polymer;

[0042] (2) Add 2500g methyl ethyl ketone to the isocyanate prepolymer to reduce the viscosity of the system, then add 0.84 mol hydroxyethyl acrylate, raise the temperature to 70°C, and cool down to 40°C after 16 hours of reaction;

[0043] (3) Dissolve 0.84 mol of maleimide and 0.03 mol of azobisisobutyronitrile in 250 g of butanone, and slowly add it dropwise to the system prepared in step (2), keep the temperature at 55°C for 6 hours, then cool down to 0°C; Slowly add 400g of 10% bromobutanone solution dropwise, control the dropwise temperat...

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PUM

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Abstract

The invention discloses an antibacterial water-based polyurethane adhesive, which contains a water-based polyurethane dispersion with a brominated imide structure as a main component, and also discloses a preparation method of the antibacterial water-based polyurethane adhesive. The antibacterial water-based polyurethane adhesive disclosed by the present invention contains a brominated imide structure, which makes the form of imide anion more stable, so that the N-Br bond is easily attacked and broken, forming a stable imide anion structure and bromide cation; bromine Positive ions and water form hypobromous acid with strong oxidation ability, so the bactericidal ability is excellent; the antibacterial water-based polyurethane adhesive disclosed by the present invention has high bonding strength, good heat resistance and hydrolysis resistance, good stability, good uniformity, and bactericidal strong ability.

Description

technical field [0001] The invention relates to an antibacterial water-based polyurethane adhesive and a preparation method thereof. Background technique [0002] Due to the rapid advancement of technology, more and more synthetic materials are used in the modern shoemaking industry. Due to their own characteristics, some materials have insufficient air permeability, which can easily cause sweat to be discharged out of the shoes in time, creating a suitable living space for the reproduction of bacteria and fungi, which can easily lead to the occurrence of diseases such as athlete's foot and seriously affect people's health. [0003] Technologists have paid attention to this problem, and existing researches on antibacterial adhesives have been reported. CN109675088A Add tea extract, guayule extract and other plant source extracts as antibacterial components in the synthesis process of acrylate pressure-sensitive adhesives, with stable properties, wide sources, low cost and g...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09J175/14C08G18/67C08G18/48C08G18/66C08G18/34
CPCC08G18/348C08G18/48C08G18/4833C08G18/4837C08G18/6692C08G18/672C09J175/14
Inventor 邱元进饶长贵陈国栋
Owner 福建华夏蓝新材料科技有限公司
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