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Nano-composite fatliquor based on alkyl glycoside and nano-silver synergistic anti-mold and preparation method thereof

A technology of alkyl glycoside and nanocomposite, which is applied in the fields of small hide/big hide/leather/fur treatment, leather impregnation, animal husbandry, etc. It can solve the problems of poor long-term effect, poor combination, serious environmental pollution, etc., and achieve excellent performance , raw materials are cheap, and the effect of enhancing mildew resistance

Active Publication Date: 2019-02-01
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the main solution for tanners is to directly add antifungal agents to the fatliquoring agent, or to add antifungal agents during the fatliquoring process, but these two methods generally have poor combination, poor long-term effect, and serious environmental pollution and other defects (FarhanaM., Elisabeth G., Rais A., et al. Environmental deterioration and human health: natural and anthropogenic determinants[M]. London / New York: SpringerDordrecht Heidelberg; Peng Huijuan, Sang Jun, Yu Lingyun, etc. Leather anticorrosion Anti-mildew chemicals and their environmental risk analysis [J]. China Leather, 2014, 43 (15): 48-50)

Method used

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  • Nano-composite fatliquor based on alkyl glycoside and nano-silver synergistic anti-mold and preparation method thereof
  • Nano-composite fatliquor based on alkyl glycoside and nano-silver synergistic anti-mold and preparation method thereof

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preparation example Construction

[0022] The preparation method of the nano composite fatliquoring agent based on alkyl glucoside and nano-silver synergistic anti-mildew that the present invention relates to comprises the following steps:

[0023] Step 1: Prepare nano silver-alkyl glycoside solution:

[0024] Take the volume fraction as 10 parts and the molar volume fraction as 0.01 mol L -1 Silver nitrate solution is placed in a beaker, and the volume fraction is 10-20 parts under the condition of magnetic stirring, and the molar volume fraction is 0.01 mol L -1 Alkyl glucoside, after fully mixing evenly, slowly add 25-35 parts by volume, and the molar volume fraction is 0.02 mol L -1 Sodium borohydride solution, react in an ice bath for 30-60 minutes to obtain a stable nano-silver-alkyl glycoside solution;

[0025] Step 2: Prepare polyhydroxy soybean lecithin fatliquor:

[0026] Take 45-50 parts by mass of soybean lecithin in a three-necked flask, then add 1-1.5 parts by mass of 1-allyloxy-2,3-propylene o...

Embodiment 1

[0030] Take 0.01 mol L of 10 parts by volume -1 Silver nitrate solution was placed in a beaker, and 0.01 mol L of 10 parts by volume was added under magnetic stirring -1Alkyl glucoside, after fully mixing evenly, slowly add 0.02 mol L of 27 parts by volume -1 Sodium borohydride solution was reacted in an ice bath for 30 minutes to obtain a stable nano silver-alkyl glycoside solution.

[0031] Take 46 parts by mass of soybean lecithin in a three-necked flask, then add 1.2 parts by mass of 1-allyloxy-2,3-propylene oxide, raise the temperature to 50°C, and react at constant temperature for 3 hours; then add mass 1.8 parts of formic acid, 0.48 parts of concentrated sulfuric acid, and 25 parts by mass of hydrogen peroxide were slowly added dropwise into a three-necked flask, and the temperature was raised to 60°C for 4 hours; using ammonia water as a pH regulator, the pH was adjusted to 7.5, drop 24 parts by mass of 40% sodium bisulfite solution, raise the temperature of the syst...

Embodiment 2

[0034] Take 0.01 mol L of 10 parts by volume -1 Silver nitrate solution was placed in a beaker, and 20 parts by volume of 0.01 mol L was added under the condition of magnetic stirring -1 Alkyl glucoside, after fully mixing evenly, slowly add 0.02 mol L of 35 parts by volume -1 Sodium borohydride solution was reacted in an ice bath for 60 minutes to obtain a stable nano silver-alkyl glycoside solution.

[0035] Take 50 parts by mass of soybean lecithin in a three-necked flask, add 1.5 parts by mass of 1-allyloxy-2,3-propylene oxide, raise the temperature to 50°C, and react at constant temperature for 3 hours; then add mass 2.2 parts of formic acid, 0.48 parts of concentrated sulfuric acid, and 26 parts by mass of hydrogen peroxide were slowly added dropwise into a three-necked flask, and the temperature was raised to 60°C for 4 hours; using ammonia water as a pH regulator, the pH was adjusted to 7.5, dropwise add 25 parts by mass of 40% sodium bisulfite solution, raise the te...

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Abstract

The invention relates to a nano composite fatliquoring agent based on alkyl glycoside and nano silver synergistically preventing mildew and a preparation method thereof. Fatliquor and fatliquored leather products have the disadvantage of being prone to mildew. The present invention adds alkyl glucoside and sodium borohydride solution to ice bath in silver nitrate solution, and reacts to obtain nanometer silver-alkyl glycoside solution; adds 1-allyloxy-2,3-propylene oxide to soybean lecithin, and then Add formic acid, concentrated sulfuric acid, drop hydrogen peroxide; adjust the pH, add dropwise sodium bisulfite solution to obtain polyhydroxy soybean lecithin fatliquor, add nano-silver-alkyl glycoside solution to prepare mildew-proof nano-composite fatliquor agent. The multi-modified soybean lecithin of the present invention can reduce the number of unsaturated bonds on the oil matrix, and inhibit the growth and reproduction of mold from the structure; combined with the performance of inorganic and organic anti-mold materials, the alkyl glycoside and nano-silver in the obtained composite fatliquoring agent It shows a good synergistic anti-mildew effect, and further enhances the anti-mildew property of the nanocomposite fatliquoring agent.

Description

technical field [0001] The invention relates to a nanocomposite fatliquoring agent, in particular to a nanocomposite fatliquoring agent based on alkyl glycosides and nano silver synergistically preventing mildew and a preparation method thereof. Background technique [0002] Leather industry is one of the traditional industries in our country and has a long history. However, during the use, transportation and storage of leather products, mildew will appear, which will affect the appearance and performance of the finished leather. There are two main reasons for leather mildew: on the one hand, since the main component of animal skins used in tanning is collagen, animal skins are easily contaminated by microorganisms during storage (Sharma P., Sharma K. D.. Utilization of fatliquors by fungi[J]. Defense Science Journal, 1980, 30(2): 93-94; 2010, 39 (11): 22-24), the modified skin collagen has been denatured into a cross-linked protein that is not easy to mold. On the other h...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C14C9/02
CPCC14C9/02
Inventor 马建中高建静吕斌
Owner SHAANXI UNIV OF SCI & TECH
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