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After finishing method for permanently improving hygiene performance of superfine fiber synthetic leather base cloth

A technology of superfine fiber and hygienic performance, which is applied in fiber treatment, biochemical fiber treatment, textiles and papermaking, etc. It can solve the problems of unsatisfactory improvement effect and durability, and achieve poor effect and hygiene. Long-lasting improvement in performance and solution to insufficient durability

Active Publication Date: 2012-10-17
南通鑫唐纺织印染有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The modification of the polyurethane resin film can improve the hygienic performance of the microfiber leather base cloth to a certain extent, but the superfine fibers in the base cloth account for the main part, and the fiber mass in the indefinite island base cloth is about 50%-55% of the base cloth mass. The fixed island type is 60%-70%, so it is the key to after-finish the microfiber to improve its hygienic performance. Neither the improvement effect nor the durability can reach a satisfactory level.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A kind of post-finishing method that can permanently improve the hygienic performance of superfine fiber synthetic leather base cloth, comprising the following steps,

[0015] The first step, pretreatment of the surface of the superfine fiber synthetic leather base cloth: use acid protease with 3% of the mass of the dry base cloth to react with the microfiber synthetic leather base cloth at 45°C for 3 hours to obtain a preliminary functional modification of the surface Microfiber synthetic leather base cloth;

[0016] The second step, hydrolysis of collagen: use alkaline protease with 1% of the collagen content, and hydrolyze the collagen for 30 minutes under the condition of pH 8 and 50°C;

[0017] The third step, the modification of collagen to the superfine fiber synthetic leather base cloth: use 1% glutaraldehyde of the dry state base cloth quality under the condition of pH 6, 40 ℃ and the base cloth after the first step pretreatment And the collagen after the hydr...

Embodiment 2

[0019] A kind of post-finishing method that can permanently improve the hygienic performance of superfine fiber synthetic leather base cloth, comprising the following steps,

[0020] The first step, pretreatment of the surface of the superfine fiber synthetic leather base cloth: use neutral protease with 12% of the dry base cloth mass to react with the microfiber synthetic leather base cloth at 90°C for 1.5h to obtain the preliminary functionalization of the surface Modified microfiber synthetic leather base cloth;

[0021] The second step, collagen hydrolysis: using alkaline protease with 4% collagen content, hydrolyzing collagen for 10 minutes under the conditions of pH 11 and 60°C;

[0022] The third step, the modification of the superfine fiber synthetic leather base cloth by collagen: use the epoxy crosslinking agent EH of 5% of the dry state base cloth quality to be 7.5 under the condition of 90 ℃ and after the first step pretreatment The base cloth and the collagen aft...

Embodiment 3

[0024] A kind of post-finishing method that can permanently improve the hygienic performance of superfine fiber synthetic leather base cloth, comprising the following steps,

[0025] The first step is the pretreatment of the surface of the superfine fiber synthetic leather base cloth: use alkaline protease with 6% of the dry base cloth mass to react with the microfiber synthetic leather base cloth at 70°C for 2 hours to obtain a preliminary functional modification of the surface. Non-toxic microfiber synthetic leather base cloth;

[0026] The second step, collagen hydrolysis: using alkaline protease with 2.5% collagen content, under the conditions of pH 9 and 55°C, hydrolyze the collagen for 20 minutes;

[0027] The third step, the modification of the superfine fiber synthetic leather base cloth by collagen: use the epoxy crosslinking agent EH of 3% of the dry base cloth quality to be 8, 70 ℃ under the condition of pH and after the first step pretreatment The base cloth and t...

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Abstract

The invention relates to an after finishing method for permanently improving the hygiene performance of superfine fiber synthetic leather base cloth, which comprises the following steps of: pretreating the surface of the superfine fiber synthetic leather base cloth by using a treating agent; hydrolyzing collagen by using alkaline protease; and grafting the hydrolyzed collagen to the primarily modified surface of the superfine fiber synthetic leather base cloth by using a crosslinking agent. The surface of the superfine fiber synthetic leather base cloth is covalently modified by collagen macromolecules, the hygiene performance of the superfine fiber synthetic leather base cloth is permanently improved by the collagen, the aim of highly simulating superfine fiber synthetic leather is fulfilled, and the problems of a poor improving effect and low durability in the prior art are solved.

Description

technical field [0001] The invention relates to a method for improving the performance of a superfine fiber synthetic leather base cloth, in particular to a finishing method which can permanently improve the hygienic performance of the superfine fiber synthetic leather base cloth. Background technique [0002] The new generation of polyurethane microfiber synthetic leather is a high-grade synthetic leather based on bundled microfiber and high-performance polyurethane. Mildew and other aspects have very strong advantages, but it also has some obvious disadvantages. It still has a certain gap with natural leather in terms of hygienic performance and taste reproduction. The most prominent shortcoming is the microfiber synthetic leather. The hygienic performance is worse than that of natural leather. According to the data, the water vapor permeability of natural leather is 800mg / (10cm 2 24h) or so, and the water vapor permeability of the microfiber base cloth is 400mg / (10cm 2 ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): D06M16/00C12S11/00D06M11/55D06M15/15D06M13/342D06M13/123D06M13/11C12P21/04
Inventor 王学川任龙芳王沛懿强涛涛
Owner 南通鑫唐纺织印染有限公司
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