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Environment-friendly high-efficiency nano antibacterial agent for leather, and preparation method and application thereof

A nano-antibacterial agent and an environment-friendly technology, applied in the field of environment-friendly and high-efficiency nano-antibacterial agent for leather and its preparation, can solve the problems of limited antibacterial effect and weak binding, and achieve the effect of enhancing antibacterial ability and effective combination.

Active Publication Date: 2019-12-03
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the use of such nanoparticles alone for antibacterial leather has limited antibacterial effects due to their weak binding to skin collagen.

Method used

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  • Environment-friendly high-efficiency nano antibacterial agent for leather, and preparation method and application thereof
  • Environment-friendly high-efficiency nano antibacterial agent for leather, and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Take 1 g lithium alginite nanoparticles, add 50 mL of mixed solvent of toluene and absolute ethanol to make it uniformly dispersed, then add 2.0 mmol of aminosilane coupling agent, react at 80 °C for 12 h, and the reaction product Suction filtration, washing with absolute ethanol for several times, drying for 24 h, and grinding to obtain the intermediate product; take 1 g of the intermediate product, add 40 mL of toluene to heat up to 80 °C, add 0.1 g of gallic acid and 0.1 g of 1-(3-di Methylaminopropyl)-3-ethylcarbodiimide hydrochloride, after which the reaction was continued for 12 h, the reaction product was suction-filtered, washed several times with absolute ethanol, dried for 24 h, and ground to obtain a nano-antibacterial agent.

[0027] Add 0.5% tare nano-antibacterial agent to the tanning bath, continue to rotate for 2 hours, then add 0.5% tare formic acid, adjust the bath to pH 3.0, turn for 30 minutes, and wash with water.

Embodiment 2

[0029] Take 5 g lithium algae nanoparticles, add 150 mL of mixed solvent of toluene and absolute ethanol to make it uniformly dispersed, then add 10.0 mmol of aminosilane coupling agent, react at 80 °C for 9~12 h, and The reaction product was filtered with suction, washed several times with absolute ethanol, dried for 24 h, and ground to obtain the intermediate product; take 1 g of the intermediate product, add 40 mL of toluene to raise the temperature to 80 °C, add 0.3 g of gallic acid and 0.1 g of 1-( 3-Dimethylaminopropyl)-3-ethylcarbodiimide hydrochloride, after which the reaction was continued for 12 h, the reaction product was suction filtered, washed several times with absolute ethanol, dried for 24 h, and ground to obtain a nano-antibacterial agent .

[0030] Add 0.5% of tare-weight nano-antibacterial agent to the tanning bath, continue to rotate for 2 hours, then add 0.5% of tare formic acid, adjust the pH of the bath to 3.0, rotate for 30 minutes, and wash with water...

Embodiment 3

[0032]Take 2 g lithium alginite nanoparticles, add 75 mL of mixed solvent of toluene and absolute ethanol to make it uniformly dispersed, then add 4.0 mmol of aminosilane coupling agent, react at 80 °C for 12 h, and the reaction product Suction filtration, washing with absolute ethanol for several times, drying for 24 h, and grinding to obtain the intermediate product; take 1 g of the intermediate product, add 40 mL of toluene to heat up to 80 °C, add 0.3 g of gallic acid and 0.1 g of N-hydroxysuccinyl imine, and then continued to react for 12 h, the reaction product was filtered with suction, washed with absolute ethanol several times, dried for 24 h, and ground to obtain a nano-antibacterial agent.

[0033] Add 1.0% tare nano-antibacterial agent to the tanning bath, continue to rotate for 2 h, then add 0.5% tare formic acid, adjust the bath to pH 3.0, rotate for 30 min, and wash with water.

[0034] Taking untreated leather as a control sample, the antibacterial effect test ...

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Abstract

The invention discloses an environment-friendly high-efficiency nanometer antibacterial agent for leather, and a preparation method and application thereof. The preparation method comprises the following steps: uniformly dispersing synthetic silicate nanoparticles in a certain mixed solvent, modifying the surfaces of the nanoparticles by using an amino silane coupling agent, and carrying out amidation reaction under specific conditions to obtain the nano antibacterial agent with phenolic hydroxyl and hydrophilic carboxyl. According to the preparation method, the adopted raw materials are environmentally friendly and easily avaiable, the prepared environment-friendly high-efficiency nanometer antibacterial agent for leather has long-acting antibacterial property, the antibacterial effect reaches 99% or above, and the nano antibacterial agent is uniformly dispersed and stably combined in a leather matrix and can be used for tanning, retanning, fat liquoring and other leather making procedures.

Description

technical field [0001] The invention belongs to the field of tanning auxiliaries, and relates to an environment-friendly high-efficiency nano antibacterial agent for leather and its preparation method and application. Background technique [0002] Leather, as an industrial product based on natural animal skin collagen through a series of physical operations and chemical modifications, is still a collagen-based material. In the process of tanning, the leather chemicals used (such as fatliquoring agents, fillers, etc.) are mostly nutrients such as fat and protein. This provides rich nutrients for the growth of microorganisms, so that the leather and its products need antibacterial treatment during storage and use, otherwise the quality and appearance of the leather and its products will be affected. Therefore, inhibiting and eliminating the growth and reproduction of harmful microorganisms has always been a key issue in the leather industry. [0003] In recent years, the dev...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C11/00C14C9/02C14C3/02
CPCC14C11/00C14C9/02C14C3/02
Inventor 石佳博米之元崔煜杨娜于博洋马建中
Owner SHAANXI UNIV OF SCI & TECH
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