Iron-zirconium-aluminum compound tanning agent and preparation method thereof

A technology of compounding tanning agents and tanning agents, applied in the field of leather chemicals, can solve the problems of heavy metal chromium pollution and low cost, and achieve the effect of low production cost, low cost, and elimination of rough grain surface of crust leather

Active Publication Date: 2014-09-17
绵竹市金坤化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to provide a kind of iron-zirconium-aluminum complex tanning agent in view of the deficiencies in the prior art, adopt this tanning agent to tan leather, can realize chromium-free tanning, solve the problem of heavy metal chromium in the leather industry from the source Pollution problem, at the same time, the cost of this product is low, th

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Dissolve 10 parts of ferric sulfate and 10 parts of zirconium sulfate in 15 parts of water respectively, mix them in a reactor equipped with a stirrer, a thermometer and a condenser, start the stirring device, raise the temperature to 25°C, react for 1 hour, add 5 3 parts of aluminum sulfate, raise the temperature to 60°C, add dropwise 3 parts of organic auxiliary acrylic acid dissolved in 10 parts of water, dropwise for 30 minutes, and react for 40 minutes. After the specified time, use baking soda or dilute sulfuric acid solution to adjust the pH value to 2.0, stop the reaction, cool to room temperature, and let stand for aging for 1 day. The aged iron-zirconium-aluminum complex tanning solution is spray-dried, the inlet temperature is 220°C, the outlet temperature is 80°C, and the iron-zirconium-aluminum complex tanning agent can be obtained after drying.

Embodiment 2

[0035]Dissolve 12 parts of ferric sulfate and 15 parts of zirconium sulfate in 20 parts of water respectively, mix them in a reactor equipped with a stirrer, a thermometer and a condenser, start the stirring device, raise the temperature to 30°C, react for 1 hour, add 8 part of aluminum sulfate, raise the temperature to 60°C, add dropwise 5 parts of organic additive small molecule sodium polyacrylate dissolved in 10 parts of water, add dropwise for 50 minutes, react for 1 hour, after the specified time, add baking soda or dilute sulfuric acid The pH value of the solution was adjusted to 2.0, the reaction was stopped, cooled to room temperature, and left to mature for 2 days. The aged iron-zirconium-aluminum complex tanning solution is spray-dried, the inlet temperature is 250°C, the outlet temperature is 90°C, and the iron-zirconium-aluminum complex tanning agent can be obtained after drying.

Embodiment 3

[0037] Dissolve 13 parts of ferric sulfate and 20 parts of zirconium sulfate in 25 parts of water respectively, mix them in a reaction kettle with a stirrer, thermometer and condenser, start the stirring device, raise the temperature to 35°C, react for 1.5 hours, and add 11 parts of aluminum sulfate, raise the temperature to 70°C, add dropwise 7 parts of organic additive melamine dissolved in 10 parts of water, dropwise for 40 minutes, react for 1.5 hours, adjust with baking soda or dilute sulfuric acid solution after the specified time When the pH value reached 2.0, the reaction was stopped, cooled to room temperature, and left to mature for 3 days. The aged iron-zirconium-aluminum complex tanning solution is spray-dried, the inlet temperature is 220°C, the outlet temperature is 80°C, and the iron-zirconium-aluminum complex tanning agent can be obtained after drying.

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PUM

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Abstract

The invention discloses an iron-zirconium-aluminum compound tanning agent and a preparation method thereof. The iron-zirconium-aluminum compound tanning agent has the characteristics of relatively low cost, simple preparation method, excellent tanning property, no heavy metal chromium and no formaldehyde; the compound tanning agent comprises the following components: ferric sulfate, aluminum sulfate, zirconium sulfate and organic auxiliaries; the pH value (10% aqueous solution) of the compound tanning agent is 2.0, and the turbid pH value of the compound tanning agent is greater than 4.5; the tanning property of the tanning agent is excellent; a shrinkage temperature of the finished leather is higher than 90 DEG C, and the physical and mechanical properties of the finished leather comply with the industry standards; the sensory properties of the finished leather are comparable with those of the chrome tanned leather, and the finished leather is resistant to water washing and aging; the iron-zirconium-aluminum compound tanning agent can be applied to a main tanning or retanning step, and is suitable for the production of various leathers and furs.

Description

technical field [0001] The invention relates to an iron-zirconium-aluminum complex tanning agent and a preparation method thereof, belonging to the field of leather chemicals. Background technique [0002] In the 21st century, with the improvement of people's living standards, leather products have become a part of people's daily life. In 2012 alone, my country's leather industry completed a total industrial output value of 1,055.6 billion yuan, with exports reaching 76.09 billion U.S. dollars and a total profit of 68.052 billion yuan, my country has become a world-recognized leather production and trade power. [0003] Tanning is the key to the leather production process. The quality of the tanning agent in tanning directly determines the quality of the finished leather. Chrome tanning agent is widely used in the leather industry because of its excellent tanning performance, simple operation and low cost. However, the use of chrome tanning agents is severely restricted at t...

Claims

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Application Information

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IPC IPC(8): C14C3/04
Inventor 但卫华李峰但年华
Owner 绵竹市金坤化工有限公司
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