A finishing agent for improving leather resistance to low-temperature drying environment

A technology of low temperature resistance and finishing agent, which is applied in the field of finishing agent to improve leather resistance to low temperature and drying environment, to achieve the effect of improving water retention, enhancing water retention and fluidity, and avoiding cracking

Inactive Publication Date: 2019-06-11
安徽乐踏鞋业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a finishing agent for improving leather resistance to low-temperature drying environment in view of the existing problems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A finishing agent for improving leather resistance to low-temperature drying environment, comprising the following raw materials in parts by weight: 16 parts of acrylic resin, 8 parts of hydroxyethyl methylcellulose, 2.5 parts of thionyl chloride, 1 part of organometallic compound, and fatty amines 0.6 parts of curing agent, 5 parts of nano silicon dioxide, 5 parts of glycidyl methacrylate, 1.5 parts of isophorone diisocyanate, 16 parts of methyl acrylate;

[0015] (1) Stir the hydroxyethyl methylcellulose, methyl acrylate and thionyl chloride at a temperature of 78°C for 35 minutes, then keep it warm for 2 hours, and store the mixed solution A at room temperature for later use;

[0016] (2) Dissolve glycidyl methacrylate in anhydrous ethanol equivalent to 2 times its weight, then add nano silicon dioxide, heat up to 92°C, stir for 6 minutes at a speed of 700 r / min, and finish at 80 ℃ for 1 hour, then lower the temperature to 50 ℃, adjust the pH value to 5.8, keep the t...

Embodiment 2

[0022] A finishing agent for improving leather resistance to low-temperature drying environments, comprising the following raw materials in parts by weight: 14 parts of acrylic resin, 10 parts of hydroxyethyl methylcellulose, 2 parts of thionyl chloride, 1.2 parts of organic metal compounds, fatty amines 0.4 parts of curing agent, 7 parts of nano silicon dioxide, 3 parts of glycidyl methacrylate, 2 parts of isophorone diisocyanate, 14 parts of methyl acrylate;

[0023] (1) Stir hydroxyethyl methylcellulose, methyl acrylate and thionyl chloride at a temperature of 75°C for 40 minutes, then keep it warm for 2 hours, and store the mixed solution A at room temperature for later use;

[0024] (2) Dissolve glycidyl methacrylate in anhydrous ethanol equivalent to 2 times its weight, then add nano silicon dioxide, heat up to 95°C, stir for 5 minutes at a speed of 800 r / min, and finish at 80 ℃ for 1 hour, then lower the temperature to 50 ℃, adjust the pH value to 5.6, keep the temperat...

Embodiment 3

[0028] A finishing agent for improving leather resistance to low-temperature drying environment, comprising the following raw materials in parts by weight: 18 parts of acrylic resin, 7 parts of hydroxyethyl methylcellulose, 3 parts of thionyl chloride, 0.8 parts of organometallic compounds, and fatty amines 0.8 parts of curing agent, 4 parts of nano silicon dioxide, 6 parts of glycidyl methacrylate, 1 part of isophorone diisocyanate, 17 parts of methyl acrylate;

[0029] (1) Stir hydroxyethyl methylcellulose, methyl acrylate and thionyl chloride at a temperature of 80°C for 30 minutes, then keep it warm for 1.5 hours, and store the mixed solution A at room temperature for later use;

[0030] (2) Dissolve glycidyl methacrylate in anhydrous ethanol equivalent to 2 times its weight, then add nano-silica, heat up to 90°C, stir at 600 rpm for 8 minutes, and finish at 80 ℃ for 1 hour, then lower the temperature to 50 ℃, adjust the pH value to 6, keep the temperature for 2 hours, coo...

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Abstract

The invention specifically relates to a finishing agent for improving the resistance of leather to a low-temperature dry environment, belonging to the technical field of leather finishing. The finishing agent comprises the following raw materials: acrylic resin, hydroxyethylmethyl cellulose, thionyl chloride, an organometallic compound, a fatty amine curing agent, nano-silica, glycidyl methacrylate, isophorone diisocyanate and methyl acrylate. Compared with the prior art, the finishing g agent has the advantages that the finishing agent can effectively prevent cracks under cold and dry conditions; and after a dermal surface is uniformly coated by a film formed by the finishing agent, surface performance of a dermal material is improved while good air permeability of the dermal material is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of leather finishing, and in particular relates to a finishing agent for improving leather resistance to low-temperature drying environments. Background technique [0002] As an important clothing material, leather has been widely used. One of the important reasons is that it has good permeability. Permeability is an important factor affecting the grade of leather and the wearing comfort of its products. It affects the permeability of leather. There are many factors, among which finishing has a great influence on the permeability of leather. Good finishing can give leather a certain gloss and aesthetics, correct dyeing unevenness, improve tiny defects on the grain surface, and improve its performance , the existing technology has achieved certain results by studying the stability, water resistance, solvent resistance, dry and wet rubbing resistance of the coating agent after use, but the existing treatment i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D133/00C09D101/08C09D101/28
CPCC08K2201/011C09D101/08C09D101/284C08L33/00C08K9/04C08K3/36C08K5/29
Inventor 陈献军
Owner 安徽乐踏鞋业有限公司
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