Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Reactive dye dyeable polyurethane urea elastic yarn and manufacturing method thereof

A technology of polyurethane urea and reactive dyes, applied in the direction of one-component polyurethane rayon, one-component polyurea rayon, dyeing method, etc., can solve the problems of heat resistance decline and disappearance, and achieve enhanced heat resistance and the effect of high temperature dyeing resistance

Active Publication Date: 2022-04-05
HYOSUNG CORP
View PDF9 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The present invention also solves the problem that the inherent physical properties of polyurethane urea elastic yarns disappear in the dyeing or post-processing process when too much polyethylene glycol is used, and the heat resistance is severely reduced. Another object of the present invention is to provide a polyurethane polymer Polyurethane urea elastic yarn with enhanced heat resistance and excellent physical properties and elasticity even after being exposed to high temperature in dyeing process, and method for producing the same

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
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Reactive dye dyeable polyurethane urea elastic yarn and manufacturing method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0052] After 88.3 kg of polytetramethyl ether glycol (PTMG, molecular weight 1800) was mixed with 20.0 mol % of polyethylene glycol (molecular weight 2000), 28.5 kg of 4,4'-diphenylmethane diisocyanate was added and heated at 90 The reaction was carried out with stirring at 120°C for 120 minutes to produce a polyurethane prepolymer having isocyanate at both ends. After cooling the prepolymer to room temperature, 213.8 kg of dimethylacetamide was added as a solvent to obtain a polyurethane prepolymer solution. Next, dissolve 3.5kg of ethylenediamine as a chain extender, 0.3kg of diethylamine as a chain terminator, and 200ppm of diethylenetriamine as a viscosity stabilizer into 50kg of dimethylacetamide and heat at 10°C. Addition to the prepolymer solution at the following temperature gave a polyurethaneurea solution with an I.V of 1.2 dl / g. Further, 1.5% by weight of triethylene glycol-di-3-(3-tert-butyl-4-hydroxyphenyl) propionate as an antioxidant, 1.5% by weight as an inorg...

Embodiment 2

[0054] Polyurethane urea elastic yarn was produced in the same manner as in Example 1, except that polyethylene glycol (molecular weight: 2000) was mixed by 25 mol% during the preparation of the prepolymer of Example 1.

Embodiment 3

[0056] Polyurethane urea elastic yarns were produced in the same manner as in Example 1, except that polyethylene glycol (molecular weight: 2000) was mixed at 30 mol% during the preparation of the prepolymer of Example 1.

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
Login to View More

PUM

No PUM Login to View More

Abstract

Disclosed is a reactive dye dyeable polyurethane urea elastic yarn comprising a reaction product of two or more polyols, one of which is polyethylene glycol and is contained in an amount of 20 to 30.0 mol% with respect to the total polyol, a diisocyanate compound, a diamine chain extender, an amine chain terminator, and a diethylenetriamine compound, the polyurethane-urea polymer comprises 10 meq / kg to 45 meq / kg of a primary amine end base, the blocking ratio (CR) of the two polyols to the diisocyanate is 1.8 to 2.0, the polyurethane-urea elastic yarn of the present invention can be dyed by a reactive dye and can improve the ground color external penetration phenomenon when a blended product of cellulose-based fibers and polyurethane is dyed, and the polyurethane-urea elastic yarn can be dyed by a reactive dye. According to the present invention, the use range of a polyurethane-urea elastic yarn can be expanded by improving the transfer fastness without impairing the inherent physical properties of the polyurethane-urea elastic yarn, such as tensile properties and heat resistance.

Description

technical field [0001] The invention discloses a reactive dye-dyeable polyurethane urea elastic yarn and its manufacturing method. Reactive dye-dyeable polyurethane urea elastic yarn and its manufacturing method can be improved when mixed with other materials that are easily dyed by reactive dyes, and can improve the phenomenon of background color see-through and improve heat resistance and migration fastness. Background technique [0002] Polyurethane urea elastic yarns are widely used in stretchable clothing such as stockings, inner-wear, and sportswear, hygiene products, and various industrial materials due to their excellent stretchability and recovery. [0003] Polyurethane urea is usually obtained by reacting polyol with excess diisocyanate compound to obtain a prepolymer (prepolymer), and after the prepolymer is properly reacted to make a spinning dope of polyurethane urea fiber, the elastic yarn is obtained by spinning. [0004] The polyurethane urea elastic yarn ha...

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
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): D02G3/32D01F6/72D01F6/70D01F1/10D01D5/04D06P3/24
CPCD01D5/04D01F6/72D01F6/70D02G3/328Y02P70/62D06P3/248C08G18/4825C08G18/4854C08G18/4808C08G18/12C08K2003/2241C08K5/0041C08K5/3445C08K5/235C08G18/3228C08G18/2865C08K5/42C08L75/04D01F1/10D02G3/32D10B2331/10D10B2331/12D10B2401/061D10B2401/14C08G18/7671D01F6/78D02G3/02D06P3/028D10B2331/30
Inventor 姜智暎姜渊秀金泰宪曹承滨
Owner HYOSUNG CORP
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com