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Preparation technology of ving/polymer/modified montmorillonoid nano composite tanoing agent

A vinyl polymer, compound tanning agent technology, applied in animal husbandry, chemical treatment of small raw hides/large raw hides/leather hides/furs, applications, etc., to achieve good water vapor permeability, high exhaustion rate, and obvious thickening. Effect

Inactive Publication Date: 2004-12-22
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there are no related reports on the introduction of polymer-based montmorillonite nanocomposites into the field of leather tanning.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] Embodiment 1,1) hexadecyltrimethylammonium bromide modified montmorillonite: first montmorillonite is added to deionized water with a mass percentage of 5%, stirring makes montmorillonite form a uniform colloidal liquid, Ultrasonic treatment for 60 minutes, then add cetyltrimethylammonium bromide measured at 90mmol / 100g montmorillonite; stir at 90°C for 2 hours, and finally use ultrasonic treatment for 30 minutes again to obtain hexadecyl trimethylammonium bromide Trimethyl ammonium bromide modified montmorillonite;

[0019] 2) Preparation of vinyl polymer: first, acrylic acid, acrylonitrile, ethyl acrylate and isopropanol are mixed and dissolved in deionized water to make acrylic acid containing 8% by mass, 12% acrylonitrile, 1% A mixed solution of ethyl acrylate and 1% isopropanol, add half of the mixed solution into deionized water with a total mass of 78% of the mixed solution. , 10% of the total mass of acrylonitrile and isopropanol is 10% water-soluble initiator ...

Embodiment 2

[0022]Embodiment 2: 1) hexadecyltrimethylammonium bromide modified montmorillonite: first montmorillonite is added to deionized water with a mass percentage of 15%, stirring makes montmorillonite form a uniform colloidal liquid, Treat with ultrasonic wave for 45 minutes, then add hexadecyltrimethylammonium bromide measured by 110mmol / 100g montmorillonite; stir at 70°C for 3 hours, and finally treat with ultrasonic wave for 55 minutes again, which is hexadecyl trimethylammonium bromide Trimethyl ammonium bromide modified montmorillonite;

[0023] 2) Preparation of vinyl polymer: first, acrylic acid, acrylonitrile, ethyl acrylate and isopropanol are mixed and dissolved in deionized water to make acrylic acid containing 12% by mass, 10% acrylonitrile, 1.2% A mixed solution of ethyl acrylate and 1.8% isopropanol, add half of the mixed solution into deionized water with 75% of the total mass of the mixed solution. The concentration of 8% of the total mass of acrylonitrile and isop...

Embodiment 3

[0026] Embodiment 3: 1) hexadecyltrimethylammonium bromide modified montmorillonite: first montmorillonite is added to deionized water with 8% mass percentage, stirring makes montmorillonite form a uniform colloidal liquid, Treat with ultrasonic wave for 30 minutes, then add cetyltrimethylammonium bromide measured at 100mmol / 100g montmorillonite; stir at 85°C for 4 hours, and finally treat with ultrasonic wave for 40 minutes again, which is hexadecyl Trimethyl ammonium bromide modified montmorillonite;

[0027] 2) Preparation of vinyl polymer: first, acrylic acid, acrylonitrile, ethyl acrylate and isopropanol are mixed and dissolved in deionized water to make acrylic acid containing 9% by mass, 11% acrylonitrile, 1.5% A mixed solution of ethyl acrylate and 4% isopropanol, add half of the mixed solution into deionized water with a total mass of 74.5% of the mixed solution. , 4% of the total mass of acrylonitrile and isopropanol is a 10% water-soluble initiator ammonium persulf...

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PUM

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Abstract

A process for preparing the nano-class composite tanning agent includes using ammonium hexadecane bromide to modify Na-base montmorillonite, using vinyl monomer (acrylic acid, acrylonitrile, or ethyl acrylate) to prepare vinyl polymer, and combounding them together by solution stripping-adsorption method. Its advantages are high effect on raising the shrinking temp of sheep leather to 76 deg.C and increasing leather thickness, and high air and moisture permeability of leather.

Description

technical field [0001] The invention relates to a preparation process of a nano-composite material capable of tanning raw hides, in particular to a preparation process of a vinyl polymer / modified montmorillonite nano-composite tanning agent. Background technique [0002] The leather industry is closely related to human life and the development of the national economy. Over the past two decades, the rapid development of the leather industry in China has not only brought us wealth, but also allowed us to see shocking figures: my country's leather industry discharges about 70 million tons of wastewater annually (including 14,000 tons of sulfide, chromium 38,000 tons of salt, 210,000 tons of suspended solids, COD Cr 350,000 tons, BOD S 940,000 tons), about 700,000 tons of protein solid waste (see Liu Bailing, Zhang Mingrang. Research on Green Chemistry in Realizing the Ecology of my country's Leather Industry. Beijing Leather. 2000(22): 50-52). Among these pollutants, chromium...

Claims

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Application Information

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IPC IPC(8): C08F2/44C08F20/00C08K9/04C14C3/22
Inventor 马建中储芸杨宗邃陈新江吕斌鲍艳吕庆强刘凌云
Owner SHAANXI UNIV OF SCI & TECH
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