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Antibacterial and hydrophilic softening finishing agent for cotton fabric and preparation method of softening finishing agent

A soft finishing agent and cotton fabric technology, which is applied in fiber treatment, plant fiber, textiles and papermaking, etc., can solve the problems that cotton fiber is easy to breed bacteria, easy to breed bacteria, cotton fiber is hard, etc., and achieves easy control of the reaction process, excellent Soft touch, good antibacterial effect

Inactive Publication Date: 2018-07-27
SUZHOU YISITE NEW MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because the cotton fiber structure has a certain crystallographic orientation, the cotton fiber itself is hard, in order to obtain good wearing performance, the cotton fabric must be softened; at the same time, the cotton fiber is easy to breed bacteria, making the fabric easy to store and use. Bacteria and even mildew, so antibacterial finishing is required for cotton fabrics
The traditional antibacterial and softening finishing process adopts two-bath method or mixes two kinds of finishing agents and adopts one-bath method for finishing. This process is time-consuming and water-consuming, and it also needs to consider the compatibility between finishing agents
At present, it has not been reported to provide a finishing agent with hydrophilic, soft and antibacterial effects by linking the segments and groups of the two properties on one macromolecule.

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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  • Antibacterial and hydrophilic softening finishing agent for cotton fabric and preparation method of softening finishing agent
  • Antibacterial and hydrophilic softening finishing agent for cotton fabric and preparation method of softening finishing agent
  • Antibacterial and hydrophilic softening finishing agent for cotton fabric and preparation method of softening finishing agent

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] The steps of present embodiment preparation for the antibacterial and hydrophilic softening agent of cotton fabric are as follows:

[0042] 1. Add 50 parts of isophorone diisocyanate and 90 parts of tetrahydrofuran-ethylene oxide copolymerized glycol (number average molecular weight is 1000) after vacuum dehydration into the reaction kettle, then add 15 parts of methyl ethyl ketone, and add 0.08 parts of di Dibutyltin laurate was used as a catalyst, the temperature was raised to 80°C, and N 2 protection, heat preservation and reaction for 3 hours and cooling down to obtain a polyurethane prepolymer.

[0043] 2. Add 50 parts of the polyurethane prepolymer obtained in step 1 and 100 parts of hydroxy polydimethylsiloxane into the reaction kettle, raise the temperature to 90°C, keep the temperature for 8 hours, cool down to 25°C, and take 3 parts of polyhexa Methyleneguanidine hydrochloride was dissolved in 3 parts of dimethyl sulfoxide, added to the reaction kettle, and...

Embodiment 2

[0046]1. Add 50 parts of isophorone diisocyanate and 125 parts of tetrahydrofuran-ethylene oxide copolymerized glycol (number average molecular weight: 1000) after vacuum dehydration into the reaction kettle, then add 20 parts of butanone, and add 0.11 parts of di Dibutyltin laurate was used as a catalyst, the temperature was raised to 75°C, and N 2 After protection and heat preservation reaction for 3.5 hours, the polyurethane prepolymer was obtained by cooling and lowering the temperature.

[0047] 2. Add 50 parts of the polyurethane prepolymer obtained in step 1 and 150 parts of hydroxypolydimethylsiloxane into the reaction kettle, raise the temperature to 95°C, keep the temperature for 7.5 hours, cool down to 30°C, and take 3.5 parts of polyhexa Methyleneguanidine hydrochloride was dissolved in 3.5 parts of dimethyl sulfoxide, added to the reaction kettle, and after 2.5 hours of heat preservation reaction, the solvent was removed by suction filtration for 0.5 hours at 75...

Embodiment 3

[0050] 1. Add 50 parts of isophorone diisocyanate and 150 parts of tetrahydrofuran-ethylene oxide copolymerized glycol (number average molecular weight: 1000) after vacuum dehydration into the reaction kettle, then add 25 parts of butanone, and add 0.15g Dibutyltin dilaurate was used as a catalyst, the temperature was raised to 80°C, and N 2 After protection, heat preservation and reaction for 3 hours, the polyurethane prepolymer was obtained by cooling and lowering the temperature.

[0051] 2. Add 50 parts of the polyurethane prepolymer obtained in step 1 and 200 parts of hydroxy polydimethylsiloxane into the reaction kettle, raise the temperature to 100°C, keep the temperature for 7 hours, cool down to 35°C, and take 4 parts of polyhexa Methyleneguanidine hydrochloride was dissolved in 4 parts of dimethyl sulfoxide, added to the reaction kettle, and after 2 hours of heat preservation reaction, the solvent was removed by suction filtration for 0.5 hours at 80°C and 0.1Mpa t...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Abstract

The invention discloses an antibacterial and hydrophilic softening finishing agent for cotton fabric and a preparation method of the softening finishing agent. Isophorone diisocyanate and tetrahydrofuran-ethylene oxide copolymeric glycol are subjected to a reaction, and a polyurethane prepolymer is prepared; the polyurethane prepolymer reacts with hydroxyl polydimethylsiloxane, polyhexamethyleneguanidine hydrochloride dissolved in dimethylsulfoxide is added, the mixture continuously reacts, and the antibacterial and hydrophilic softening finishing agent for cotton fabric is prepared. The process is simple, the reaction process is convenient to control, the molecule structure of the obtained antibacterial and hydrophilic softening finishing agent contains more polyether segments and organosilicon segments, the antibacterial and hydrophilic softening finishing agent has better hydrophilic and softening effects, besides, polyurethane segments of the tetrahydrofuran-ethylene oxide copolymeric glycol structure in the molecule have good low-temperature elasticity and low-temperature flexibility and can endow the finished fabric with better resilience, polyhexamethyleneguanidine hydrochloride has a batter antibacterial effect and can endow the finished fabric with better antibacterial performance, and the softening finishing agent has good application prospects.

Description

technical field [0001] The invention relates to an antibacterial and hydrophilic softening agent for cotton fabrics and a preparation method thereof, belonging to the technical field of textile dyeing and finishing. Background technique [0002] Cotton fiber belongs to natural cellulose fiber and is a commonly used clothing material. The molecular structure of cotton fiber contains a large number of hydroxyl groups, which makes cotton fabrics have good hydrophilic properties. However, because the cotton fiber structure has a certain crystallographic orientation, the cotton fiber itself is hard, in order to obtain good wearing performance, the cotton fabric must be softened; at the same time, the cotton fiber is easy to breed bacteria, making the fabric easy to store and use. Bacteria can grow and even mildew, so it is necessary to carry out antibacterial finishing on cotton fabrics. The traditional antibacterial and softening finishing process uses a two-bath method or a o...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
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Application Information

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IPC IPC(8): D06M15/568D06M13/188C08G18/10C08G18/48C08G18/64C08G18/75C08G18/61D06M101/06
CPCC08G18/10C08G18/4854C08G18/6415C08G18/755D06M13/188D06M15/568D06M2101/06D06M2200/50C08G18/61
Inventor 易辉徐炜林江郑惠莲周向东李福泉
Owner SUZHOU YISITE NEW MATERIAL TECH
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