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Nitrogen halamine type antibacterial polyurethane material as well as preparation method and application thereof

A polyurethane material, nitrogen halamine type technology, used in polyurea/polyurethane coatings, textiles and papermaking, antifouling/underwater coatings, etc., can solve the problems of low efficiency, non-persistent and unstable nitrogen halamine type compounds, etc. , to achieve the effect of low cytotoxicity, low price and easy availability, and increased stability

Pending Publication Date: 2022-02-15
ANHUI UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a nitrogen halide type antibacterial polyurethane material and its preparation method and application, to solve the problems of non-durable, unstable and inefficient performance of nitrogen halide type compounds in the prior art

Method used

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  • Nitrogen halamine type antibacterial polyurethane material as well as preparation method and application thereof
  • Nitrogen halamine type antibacterial polyurethane material as well as preparation method and application thereof
  • Nitrogen halamine type antibacterial polyurethane material as well as preparation method and application thereof

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preparation example Construction

[0036] The present invention also provides a preparation method of nitrogen halide type antibacterial polyurethane material, comprising the following steps:

[0037] S1. Add 10 to 20 parts of guanidine salt, 1 to 5 parts of 2-acetylbutyrolactone, 4 to 11 parts of triethylamine and 15 to 29 parts of absolute ethanol in parts by weight and stir in the reactor for 30 to 60 minutes. React at 70-80°C for 24-48 hours, cool down to room temperature, and rinse with ethanol to obtain nitrogen haloamine precursor A, whose structural formula is:

[0038]

[0039] S2. Add 20 to 30 parts of polyol, 4 to 8 parts of diisocyanate, and 5 to 12 parts of N,N-dimethylformamide into another reactor, and then add 0.002 to 0.004 parts of catalyst. React at ~85°C for 2 to 4 hours to prepare prefabricated material B;

[0040] S3. Add 18-26 parts of N,N-dimethylformamide, 0.4-1.0 parts of chain extender and 0.1-0.6 parts of nitrogen halide to the preform B prepared in S2. The amine precursor A is ...

Embodiment 1

[0048] This embodiment provides a nitrogen halide type antibacterial polyurethane material that can be used in fields such as toy coatings, textile coatings, and medical devices, which is prepared by the following process:

[0049] S1. Add 10 parts of guanidinium carbonate, 2 parts of 2-acetylbutyrolactone, 4 parts of triethylamine, and 20 parts of absolute ethanol into the reactor in parts by weight and stir for 30 minutes, then react at 78°C for 24 hours, After cooling down to room temperature, after rinsing with ethanol, the nitrogen haloamine precursor A is obtained;

[0050]S2. Add 20 parts of polyether N220, 5 parts of aliphatic diisocyanate IPDI, and 7 parts of N,N-dimethylformamide DMF into another reactor, and add 0.002 parts of catalyst to it, and in a nitrogen atmosphere React at 80°C for 2 hours to prepare preform B;

[0051] S3. Add 20 parts of N,N-dimethylformamide DMF, 0.8 parts of chain extender BDO and 0.15 parts of nitrogen haloamine precursor dried under va...

Embodiment 2

[0055] This embodiment provides a nitrogen halide type antibacterial polyurethane material that can be used in fields such as toy coatings, textile coatings, and medical devices, which is prepared by the following process:

[0056] S1. Add 10 parts of guanidinium carbonate, 2 parts of 2-acetylbutyrolactone, 4 parts of triethylamine, and 20 parts of absolute ethanol into the reactor in parts by weight and stir for 30 minutes, then react at 78°C for 24 hours, After cooling down to room temperature, after rinsing with ethanol, the nitrogen haloamine precursor A is obtained;

[0057] S2. Add 20 parts of polyether N220, 5 parts of aliphatic diisocyanate IPDI, and 7 parts of N,N-dimethylformamide DMF into another reactor, and add 0.002 parts of catalyst to it, and in a nitrogen atmosphere React at 80°C for 2 hours to prepare preform B;

[0058] S3. Add 20 parts of N,N-dimethylformamide DMF, 0.8 part of chain extender BDO and 0.2 part of nitrogen haloamine precursor dried under vacu...

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Abstract

The invention discloses a nitrogen halamine type antibacterial polyurethane material as well as a preparation method and application thereof, and relates to the field of polyurethane compositions. The method comprises the following steps: firstly, synthesizing a nitrogen halamine precursor by taking guanidine salt and 2-acetylbutyrolactone as main raw materials; further, then using the polyol and isophorone diisocyanate, as main raw materials, to prepare a prepolymer; then introducing a prepared nitrogen halamine precursor which serves as a chain extender at the same time, preparing the nitrogen halamine type polyurethane emulsion, enabling the emulsion to form a film, and carrying out chlorination on the prepared film through a sodium hypochlorite solution or a domestic bleaching agent, so as to obtain the polyurethane material with antibacterial performance. The synthetic process is simple, the antibacterial performance can be enhanced through repeated chlorination in practical application, and practical production and use are facilitated; wherein the adhesive film is high in strength and excellent in adhesive force; and the chlorinated coating film has good and lasting antibacterial performance, and has great application prospects in the fields of antibacterial textile fabrics, toy coatings and medical appliances.

Description

technical field [0001] The invention relates to the field of polyurethane compositions, in particular to a nitrogen halide type antibacterial polyurethane. Background technique [0002] Polyurethane (PU) has been widely used in children's toys, yoga mats, furniture, medical aerospace, aerospace flight, military and other fields. Unfortunately, like most polymers, polyurethane materials are inevitably subject to microbial contamination. Contact with infants can cause cross-contamination, cross-infection, or spread bacterial disease. Therefore, in recent years, the research and development of antibacterial and environmentally friendly materials have attracted more and more attention. [0003] With the deepening of research, different antibacterial substances have been synthesized by different methods and introduced into polymer materials to achieve certain antibacterial effects. [0004] Among the many potential antibacterial substances, nitrogen haloamine-type compounds a...

Claims

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Application Information

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IPC IPC(8): C08G18/66C08G18/48C08G18/10C08G18/32C08G18/83C09D175/08C09D5/14D06N3/14
CPCC08G18/48C08G18/10C08G18/6674C08G18/831C09D175/08C09D5/14D06N3/14D06N2203/068C08G18/3848C08G18/3206
Inventor 杨建军彭盼盼吴庆云吴明元张建安刘久逸
Owner ANHUI UNIVERSITY
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