Antibacterial waterborne polyurethane and a synthetic method thereof

A technology of water-based polyurethane and antibacterial activity is applied in the field of preparation of water-based polyurethane to achieve the effects of low price, good antibacterial effect and good antibacterial effect.

Active Publication Date: 2017-07-14
QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There are few reports on the antibacterial mechanism of D-glucosamine hydrochloride, but the antibacterial mechanism of its polymer chitosan is relatively clear

Method used

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  • Antibacterial waterborne polyurethane and a synthetic method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 250g of polyoctamethylene glycol adipate into a 1500ml flask, add 150g of butanone, add 108.8g of toluene diisocyanate at 50°C, and stir for 3 hours. 2.5 g of D-glucosamine hydrochloride was added, and the mixture was stirred and reacted at 70° C. for 2 hours. 7.5g of 2,2-dimethylolpropionic acid was added, and the mixture was stirred and reacted at 70°C for 3 hours. The reaction liquid was cooled to 45° C., a certain amount of triethylamine was added, and the mixture was kept stirring for 1 hour. A certain amount of deionized water was added, and emulsified for 1 hour under mechanical stirring to obtain a polyurethane emulsion.

Embodiment 2

[0024] Add 200g of polyoxyethylene diol into a 1500ml flask, add 150g of butanone, add 120g of diphenylmethane diisocyanate at 60°C, and stir for 3 hours. Add 4.7g of D-glucosamine hydrochloride, and keep stirring at 80°C for 2 hours. 18g of 2,2-dimethylolpropionic acid was added, and the mixture was stirred and reacted at 80°C for 3 hours. The reaction solution was cooled to 30° C., a certain amount of triethylamine was added, and the mixture was kept stirring for 1 hour. A certain amount of deionized water was added, and emulsified for 1 hour under mechanical stirring to obtain a polyurethane emulsion.

Embodiment 3

[0026] Add 230g of polyoxypropylene diol into a 1500ml flask, add 150g of butanone, add 110g of xylylene diisocyanate at 70°C, and stir for 3 hours. 11 g of D-glucosamine hydrochloride was added, and the mixture was stirred and reacted at 80° C. for 2 hours. 20g of 2,2-dimethylolpropionic acid was added, and the mixture was stirred and reacted at 80°C for 3 hours. The reaction liquid was cooled to 50° C., a certain amount of triethylamine was added, and the mixture was kept stirring for 1 hour. A certain amount of deionized water was added, and emulsified for 1 hour under mechanical stirring to obtain a polyurethane emulsion.

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Abstract

The invention discloses an antibacterial waterborne polyurethane material and a synthetic method thereof and relates to an antibacterial waterborne polyurethane material and a preparing method thereof. Polyester polyol or polyether polyol, diisocyanate, 2,2-di(hydroxymethyl)butyric acid and D-glucosamine hydrochloride are adopted as basic raw materials. The raw materials are subjected to pre-polymerization, chain extension, neutralization and emulsification to obtain antibacterial waterborne polyurethane. The antibacterial waterborne polyurethane material and the method are characterized in that a certain amount of the D-glucosamine hydrochloride is added in the chain extending stage; and hydroxy in the D-glucosamine hydrochloride molecule reacts with isocyanate groups in a polyurethane prepolymer so as to introduce an antibacterial component into the molecule of the waterborne polyurethane through a chemical bonding manner. Influences of functional additives on mechanical performance of the waterborne polyurethane are avoided, and a good antibacterial effect can be achieved.

Description

technical field [0001] The invention relates to a preparation method of waterborne polyurethane, in particular to a preparation method of waterborne polyurethane with antibacterial function. Background technique [0002] Waterborne polyurethane is widely used in household products, interior decoration, medical equipment, food processing, packaging industry and other fields due to its excellent performance, environment-friendly characteristics and low price. However, during the use and storage of water-based polyurethane products, bacteria are easy to grow and multiply under suitable temperature and humidity conditions, which seriously threatens people's health. Therefore, antibacterial properties have always been the focus of research on this material. [0003] At present, the main method of antibacterial waterborne polyurethane is to add inorganic antibacterial agents to waterborne polyurethane, but because it will affect some mechanical properties of waterborne polyurethan...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G18/66C08G18/42C08G18/48C08G18/12C08G18/34C08G18/32
CPCC08G18/12C08G18/3218C08G18/4238C08G18/4825C08G18/4833C08G18/4854C08G18/348
Inventor 高勇方明章陈炳琪杨力李媛媛汪慧霞肖玉麟
Owner QUANGANG PETROCHEM RES INST OF FUJIAN NORMAL UNIV
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