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Function additive for improving sanitation performance of superfine fibre chemical leather and preparation method thereof

A technology of hygienic performance and functional additives, applied in the direction of fiber type, fiber treatment, textile and papermaking, etc., can solve the problems of poor hygienic performance of microfiber synthetic leather, and achieve high end group functionality, water vapor permeability and moisture absorption. The effect of improving water vapor permeability and hygroscopicity

Inactive Publication Date: 2009-02-18
SHAANXI UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a functional additive for improving the hygienic performance of ultrafine fiber synthetic leather and its preparation method, so as to solve the problem of poor hygienic performance of ultrafine fiber synthetic leather in the prior art

Method used

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  • Function additive for improving sanitation performance of superfine fibre chemical leather and preparation method thereof
  • Function additive for improving sanitation performance of superfine fibre chemical leather and preparation method thereof

Examples

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Effect test

Embodiment 1

[0021] A functional auxiliary agent for improving the hygienic performance of superfine fiber synthetic leather, which is made by the following preparation method: the preparation method includes the following steps in sequence

[0022] Step 1: Mix diethanolamine and methyl acrylate at a molar ratio of 1:1, add 20 mL of anhydrous methanol as a solvent, stir and react at 35°C for 4 hours, vacuumize the obtained product to remove the solvent, and set aside;

[0023] Step 2: adding 4% p-toluenesulfonic acid to the total mass of reactants for acidic catalysis, and reacting at 120° C. for 3 hours under vacuum (vacuum degree: 0.05 MPa), to prepare hydroxyl-terminated hyperbranched polyamide-ester.

Embodiment 2

[0025] A functional auxiliary agent for improving the hygienic performance of superfine fiber synthetic leather, which is made by the following preparation method: the preparation method includes the following steps in sequence

[0026] Step 1: Mix diisopropanolamine and ethyl acrylate at a molar ratio of 1:1.5, add 30mL of absolute ethanol as a solvent, stir and react at 30°C for 5 hours, transfer the obtained product directly into a vacuum bottle, and pump After removing the solvent in vacuo, set aside:

[0027] Step 2: add concentrated sulfuric acid with 3% of the total mass of the reactants for acidic catalysis, and react under vacuum at 130°C (vacuum degree: 0.1MPa) for 2h to prepare hydroxyl-terminated hyperbranched polyamide-ester.

Embodiment 3

[0029] A functional auxiliary agent for improving the hygienic performance of superfine fiber synthetic leather, which is made by the following preparation method: the preparation method includes the following steps in sequence

[0030] Step 1: Mix diethanolamine and butyl acrylate at a molar ratio of 1:2.5, add 35mL of anhydrous isopropanol as a solvent, stir and react at 40°C for 3 hours, remove the solvent from the obtained product, and set aside:

[0031] Step 2: add dry HCl with 3% of the total mass of the reactants for acidic catalysis, and perform a vacuum (vacuum degree of 0.08 MPa) reaction at 130° C. for 2.5 hours to obtain a hydroxyl-terminated hyperbranched polyamide-ester;

[0032] Step 3: Mix the hydroxyl groups in the hydroxyl-terminated hyperbranched polyamide-ester with maleic anhydride at a molar ratio of 2.1:1, add p-toluenesulfonic acid with a mass percentage of 3%, and stir and react at 180°C for 2.5h That's it.

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Abstract

The invention relates to a method to prepare functional addition agent for synthesizing leather, in particular relates to functional addition agent used for improving the hygienic property of synthesized ultra-thin fiber leather and a preparation method thereof. The invention aims at solving the problem of poor hygienic property of synthesized ultra-thin fiber leather in the prior art; the technical proposal provided by the invention includes that: the functional addition agent used for improving the hygienic property of synthesized ultra-thin fiber leather is prepared through the following steps: firstly, mixing: mixing alcohol amine and acrylate, adding proper amount of low fatty alcohol as solvent, so as to enable the mixture to react, then removing the solvent under decompressed condition for spare use; secondly, catalyzing: adding acid catalyzer for acid catalysis, pumping to vacuum and enabling the mixture to react, thus producing hydroxyl-terminated hyperbranched polyamido ester. Compared with the prior art, the method has the advantages that the product produced through the method is large in degree of functionality and high in reaction activity and can be combined with active groups, with water permeability and moisture absorption capability both improved by 30%.

Description

Technical field: [0001] The invention relates to a preparation method of a functional auxiliary agent for synthetic leather, in particular to a functional auxiliary agent for improving the hygienic performance of superfine fiber synthetic leather and a preparation method thereof. Background technique [0002] Microfiber synthetic leather resembles real leather in structure and performance, and its main features and advantages are as follows: ①It is suitable for large-scale continuous industrial production; ②The formation of bundled ultrafine fibers and continuous network polyurethane structure make it have partial Close to the structure and feel of natural leather; ③Excellent physical and chemical properties. It is superior to natural leather in terms of mechanical strength, water resistance, oil resistance, and weather resistance, and is especially suitable for use in harsh environments and conditions of high strength, high humidity, and large amounts of exercise; ④ Various...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/59C08G69/44C08G69/48D06M101/30
Inventor 王学川强涛涛任龙芳
Owner SHAANXI UNIV OF SCI & TECH
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