Preparation method of positive ion reaction type environment-friendly fabric stiffening agent

A cationic and reactive technology, applied in the field of textile manufacturing, can solve problems such as low efficiency and waste of energy, and achieve the effects of improving production efficiency, simplifying production processes, and saving energy

Active Publication Date: 2015-11-04
DYMATIC CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Not only inefficient, but also a waste of energy

Method used

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  • Preparation method of positive ion reaction type environment-friendly fabric stiffening agent

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Experimental program
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Effect test

Embodiment 1

[0017] Add 30.0 g of polycaprolactone diol with a number-average relative molecular weight of 1000 into a 500 mL four-neck flask equipped with a thermometer, a stirrer, and a reflux condenser, raise the temperature to 110°C, and pump at -0.9-1.0 MPa while stirring. Vacuum dehydration for 2h. Cool down to 80°C, add 2.0g of 1,4-butanediol that has been dehydrated and pretreated with 4A molecular sieve, stir evenly, add 35.0g of isophorone isocyanate, and react at 95°C for 2 hours. 6.0g N - Methyldiethanolamine was diluted with 30.0 g butanone, and after the prepolymerization was completed, the temperature was lowered to 70° C., and the mixture was added. After heating up to 70° C. for 3 hours, a polyurethane prepolymer with terminal isocyanate was obtained. Cool down to 60°C and add 11.4g of sodium bisulfite aqueous solution to block for 0.5h, add 3.0g of glacial acetic acid to neutralize for 0.5h, and finally add deionized water to emulsify under the stirring condition of 100...

Embodiment 2

[0019] Add 30.0 g of polytetrahydrofuran ether glycol with a number-average molecular weight of 2000 into a 500 mL four-necked flask equipped with a thermometer, a stirrer, and a reflux condenser, raise the temperature to 110°C, and vacuumize at -0.9-1.0 MPa while stirring Dehydration 2h. Cool down to 70°C, add 5.0 g of diethylene glycol that has been dehydrated and pretreated with 4A molecular sieve, stir well, add 24.0 g of diphenylmethane diisocyanate, and react at 80°C for 2 hours. 3.0g N -Methyldiethanolamine was diluted with 30.0 g of acetone, and after the prepolymerization was completed, the temperature was lowered to 50° C., and the mixture was added. After heating up to 55° C. for 3 hours, a polyurethane prepolymer with terminal isocyanate was obtained. Add 10.5g butanone oxime and block at 60°C for 1h, then cool down to 50°C and add 2.3g of glacial acetic acid to neutralize for 0.5h, and finally add deionized water to emulsify under the stirring condition of 1000r...

Embodiment 3

[0021] Add 30.0 g of polybutylene adipate diol with a number-average molecular weight of 3000 into a 500 mL four-necked flask equipped with a thermometer, a stirrer, and a reflux condenser, raise the temperature to 110°C, and place it at -0.9- Vacuum dehydration at 1.0MPa for 2h. Cool down to 80°C, add 6.0 g of neopentyl glycol that has been dehydrated and pretreated with 4A molecular sieve, stir well, add 45.0 g of dicyclohexylmethane diisocyanate, and react at 95°C for 2 hours. 8.0g diethanolamine with 40.0g N - dilute with methylpyrrolidone, cool down to 50°C after prepolymerization, and add the mixture. After heating up to 55° C. for 3 hours, a polyurethane prepolymer with terminal isocyanate was obtained. After adding 11.7gε-caprolactam and capping at 80°C for 3h, cool down to 50°C and add 6.9g lactic acid for neutralization for 0.5h, and finally add deionized water to emulsify under the stirring condition of 1000r / min to obtain a cationic capping compound with a solid ...

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Abstract

The invention discloses a preparation method of a positive ion reaction type environment-friendly fabric stiffening agent. According to the stiffening agent, waterborne polyurethane is taken as a main body and can have a cross-linking reaction with fiber when used for the fabric finishing process, and a good stiff effect is obtained. No environmental pollution is caused in the production process, no formaldehyde is produced in the use process, and harm to a human body is avoided. Besides, the stiffening agent adopts a positive ion type stiffening agent and has better compatibility with most of feeling agents, one-bath afterfinish can be realized, the production procedure is simplified, energy can be saved, and the production efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of textile manufacturing, and in particular relates to a preparation method of a cationic reaction type environment-friendly fabric stiffening agent in the field of water-based polyurethane. Background technique [0002] Stiffening finishing is an important fabric finishing method, which can give the fabric a special feel and appearance. The existing stiffening agents mainly include: urea-formaldehyde resin, melamine resin, polyacrylic resin, polyvinyl alcohol, polyvinyl acetate, etc. Among them, the melamine resin stiffening agent is favored by people because of its good stiffness, hand feeling and rebound, but it will release free formaldehyde, which will cause damage to human health. With the increasingly stringent requirements for fabric performance, such stiffeners are increasingly restricted, and a formaldehyde-free and environmentally friendly fabric stiffener is highly anticipated. [0003] After th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M15/568D06M15/572C08G18/42C08G18/48C08G18/66C08G18/76C08G18/75C08G18/73
Inventor 李成祥鲍亮范浩军郭玉良
Owner DYMATIC CHEM
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