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Leather mildew-prevention and antibacterial agent and preparation method thereof

An antifungal and antibacterial agent, leather technology, applied in leather surface treatment, small raw hide/big raw hide/leather/fur treatment, small raw hide/large raw hide/leather skin/fur chemical treatment, etc., can solve the problem of affecting leather quality and appearance , Leather antifungal agents have poor antifungal and antibacterial effects, etc., to achieve the effects of improved extensibility, improved dry rubbing fastness, and good compatibility

Inactive Publication Date: 2019-06-21
汪逸凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a leather anti-mold and anti-bacterial agent and its preparation method in view of the poor anti-mold and anti-bacterial effect of the current leather anti-mold agent, which affects the quality and appearance of leather

Method used

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  • Leather mildew-prevention and antibacterial agent and preparation method thereof

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Experimental program
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preparation example Construction

[0022] The preparation method of the bonding additive is: take casein at a mass ratio of 7~10:1~3:30~40, add hexamethylenetetramine and deionized water, heat up to 65~75°C, stir and mix for 20~30min, add Casein quality 40~60% caprolactam, keep warm at 70~75°C for 1~3h, cool to room temperature, get the cooling product, take the cooling product and add carbamate according to the mass ratio of 10~20:2~5, in 30~ Stir and mix at 40°C for 20-30 minutes to obtain the bonding additive.

[0023] The solvent is: take acetonitrile and add chloroform according to the mass ratio of 1~3:2~5 and mix to obtain.

[0024] The preparation method of antibacterial active agent is:

[0025](1) Take diallylamine and add toluene at a mass ratio of 5~9:10~15, then add hexadecane bromide which is 2~5 times the mass of diallylamine, heat up to 100~110°C and mix for 18 ~24h to obtain the stirred mixture a, take the stirred mixture a according to the mass ratio of 20~30:3~7, add water, adjust the pH to...

Embodiment 1

[0034] The preparation method of the bonding additive is as follows: take casein and add hexamethylenetetramine and deionized water at a mass ratio of 7:1:30, heat up to 65°C and stir and mix for 20 minutes, add caprolactam with 40% of the mass of casein, and mix at 70 Insulate at ℃ for 1h, cool to room temperature to obtain a cooling product, take the cooling product and add carbamate at a mass ratio of 10:2, stir and mix at 30℃ for 20 minutes to obtain a bonding additive.

[0035] The solvent is: take acetonitrile and add chloroform according to the mass ratio of 1~3:2~5 and mix to obtain.

[0036] The preparation method of antibacterial active agent is:

[0037] (1) Take diallylamine and add toluene at a mass ratio of 5:10, then add hexadecane bromide twice the mass of diallylamine, raise the temperature to 100°C and stir and mix for 18 hours to obtain a stirred mixture a. Take the stirred Water was added to mixture a at a mass ratio of 20:3, and the pH was adjusted to 11 ...

Embodiment 2

[0046] The preparation method of the bonding additive is as follows: take casein and add hexamethylenetetramine and deionized water in a mass ratio of 10:3:40, heat up to 75°C and stir and mix for 30 minutes, add caprolactam with 60% of the mass of casein, and mix at 75°C Insulate at ℃ for 3 hours, cool to room temperature to obtain a cooling product, take the cooling product and add carbamate at a mass ratio of 20:5, stir and mix at 40℃ for 30 minutes to obtain a bonding additive.

[0047] The solvent is: take acetonitrile and add chloroform according to the mass ratio of 1~3:2~5 and mix to obtain.

[0048] The preparation method of antibacterial active agent is:

[0049] (1) Take diallylamine and add toluene at a mass ratio of 9:15, then add hexadecane bromide which is 5 times the mass of diallylamine, raise the temperature to 110°C and stir and mix for 24 hours to obtain the stirred mixture a. Take the stirred Water was added to mixture a at a mass ratio of 30:7, and the p...

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Abstract

The invention discloses a leather mildew-prevention and antibacterial agent and a preparation method thereof, and belongs to the field of leather mildew prevention. A bonding additive is prepared fromcasein by modifying with hexamethylenetetramine and the like, so that a mildew preventive can have better compatibility with leather collagen and penetrate into leather more, bonding fastness and dryrubbing fastness are improved, and the mildew preventive can be retained for a long time; a prepared antibacterial active agent improves polymerizability and easy dispersibility of the mildew preventive, and can be uniformly dispersed on the leather surface and firmly combined with the leather, and mildew preventive efficiency is improved; a prepared spreading wax-based additive enables the mildew preventive to form a film and spread on the leather surface by means of lower surface energy, penetrates into the leather to perform moistening, and improves leather hand feeling; on the other hand,water on the leather surface is stopped by a hydrophobic chain introduced by the wax-based additive, the influence of external oxygen and water vapor on leather quality is reduced, and mildew prevention is fundamentally performed. The problem that quality and appearance of leather are affected by poor mildew-prevention and antibacterial effects of current mildew preventives is solved.

Description

technical field [0001] The invention relates to the field of leather anti-mold, in particular to a leather anti-mold and antibacterial agent and a preparation method thereof. Background technique [0002] Leather goods (leather shoes, leather clothes, leather bags, suitcases, etc.) are one of the mass export commodities. Leather (including leather products) is a processed product of natural high molecular compound protein modified by tanning agent. Under certain ambient temperature and humidity, it is very easy to produce mildew and be corroded by mildew microorganisms, thereby reducing its appearance and internal quality , and even spoil leather products. Mildewed leather products cause serious quality problems, making them lose their use value. Molds produce color deposits on leather products, which form stains. The growth of molds makes the dyeing and finishing of leather shoes uneven; molds can also damage leather products. The physical and mechanical properties of lea...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C14C11/00
Inventor 汪逸凡
Owner 汪逸凡
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