KR101638164B1 - Polyurethanurea elastic fiber using nitrogen spinning and method of manufacturing the same - Google Patents
Polyurethanurea elastic fiber using nitrogen spinning and method of manufacturing the same Download PDFInfo
- Publication number
- KR101638164B1 KR101638164B1 KR1020150108534A KR20150108534A KR101638164B1 KR 101638164 B1 KR101638164 B1 KR 101638164B1 KR 1020150108534 A KR1020150108534 A KR 1020150108534A KR 20150108534 A KR20150108534 A KR 20150108534A KR 101638164 B1 KR101638164 B1 KR 101638164B1
- Authority
- KR
- South Korea
- Prior art keywords
- polyurethane
- yarn
- solution
- urea
- spinning
- Prior art date
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/70—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyurethanes
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01D—MECHANICAL METHODS OR APPARATUS IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS
- D01D1/00—Treatment of filament-forming or like material
- D01D1/02—Preparation of spinning solutions
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F1/00—General methods for the manufacture of artificial filaments or the like
- D01F1/02—Addition of substances to the spinning solution or to the melt
- D01F1/10—Other agents for modifying properties
-
- D—TEXTILES; PAPER
- D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
- D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
- D02G3/00—Yarns or threads, e.g. fancy yarns; Processes or apparatus for the production thereof, not otherwise provided for
- D02G3/22—Yarns or threads characterised by constructional features, e.g. blending, filament/fibre
- D02G3/32—Elastic yarns or threads ; Production of plied or cored yarns, one of which is elastic
Landscapes
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Artificial Filaments (AREA)
Abstract
Description
More particularly, the present invention relates to a polyurethane-urea elastic yarn using nitrogen radiation having an oxygen concentration of 10% or less for preventing yellowing of a yarn and a method for producing the same. BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a polyurethane- .
Fibers and film-like polyurethaneureas with elastic properties are widely used in the textile industry. The term ' spandex ' as used to describe these elastic polyurethaneureas often refers to long chain synthetic polymers composed of at least 85% by weight of segmented polyurethanes. Spandex has been used in the textile industry for a variety of purposes, particularly underwear, form-guided clothing, swimwear and elastic garments or stockings.
The elastic yarn may itself be supplied as staple fiber, either as a core-spun elastomer yarn spun circularly with a filament or staple fiber yarn for the purpose of improving the wearing quality of the fabric having a low elasticity, or as a staple fiber mixed with non-elastic fibers.
The polyurethaneurea is prepared by reacting a polyol which is generally a high molecular weight diol compound with an excessive diisocyanate compound to obtain a prepolymer having isocyanate groups at both terminals of the polyol and a prepolymer obtained by reacting the prepolymer with an appropriate solvent After the solution is dissolved, a diamine-based or diol-based chain extender is added to the solution to react with a chain terminator such as a monoalcohol or a monoamine, etc. to prepare a spinning solution of the polyurethane-urea fiber, followed by drying and wet spinning To obtain a polyurethane-urea elastic yarn, that is, a spandex fiber.
Polyurethane-urea elastic yarns are used for various purposes due to their inherent properties of excellent elasticity and elastic restoring force, and as the range of applications thereof is expanded, new additional characteristics are continuously required in existing fibers.
Generally, the polyurethane-urea elastic yarn causes thermal embrittlement due to high heat in post-processing performed after knitting with a counter yarn (nylon, cotton, silk, wool, etc.) .
In order to solve the above problems, efforts have been continuously made to improve the physical properties of the polyurethane based elastic yarn.
The most common method used by the elastic yarn manufacturer in the past is to increase the hard segment content by increasing the NCO content in the range of 2.60% to 3.00% at the time of preparing the prepolymer for producing elastic yarn, (Ethylenediamine), which is a chain extender, which is not available, to improve the physical properties of elastic fibers.
However, when 100% of ethylenediamine is used as the chain extender in the polymerizate having an NCO% of 2.60 to 3.00%, the yarn properties are good, but due to the low solubility of the polymerizate and a large deviation between the diffusion rate of the solvent in the polymerizer and the drying rate, In order to obtain residual solvent content and yarn properties, high-temperature radiation conditions are required for air spinning. However, if high-temperature radiation conditions are applied under an air atmosphere, there is a problem that yellowing occurs in the yarn due to high temperature.
An object of the present invention is to provide a polyurethane-urea elastic yarn using nitrogen radiation having an oxygen concentration of 10% or less in order to prevent yellowing of a yarn and a method for producing the same.
In order to accomplish the above object, the present invention provides a process for producing a polyurethane precursor, which comprises polymerizing a polyol and a diisocyanate to prepare a polyurethane precursor, and dissolving the polyurethane precursor in a solvent to prepare a prepolymer solution; Dissolving the chain extender and the chain extender in a solvent to prepare an amine solution; Stirring and chain extending the prepolymer solution and the amine solution to prepare a polyurethane-urea spinning solution; And spinning the polyurethane-urea spinning stock solution at a temperature of 260 ° C or higher and an oxygen concentration of 10% or lower, and winding up the polyurethaneurea urea elastic yarn.
At this time, it is preferable that the NCO% of the prepolymer is 2.6 to 3.0%, and the chain extender is 100% of ethylenediamine.
The present invention also provides a polyurethane-urea elastic yarn, which is produced by the above production method and has a b value of yarn of -4.0 to 6.0.
The method for producing the polyurethane-urea elastic yarn of the present invention can prevent the yellowing caused by the high-temperature radiation of the polyurethane-urea polymer by applying nitrogen radiation having an oxygen concentration of 10% or less, and can solve the yellowing problem of the yarn.
Hereinafter, the present invention will be described.
The present invention relates to a process for preparing a prepolymer solution by polymerizing a polyol and a diisocyanate to prepare a polyurethane precursor and then dissolving the polyurethane precursor in a solvent; Dissolving the chain extender and the chain extender in a solvent to prepare an amine solution; Stirring and chain extending the prepolymer solution and the amine solution to prepare a polyurethane-urea spinning solution; And spinning the polyurethane-urea spinning stock solution at a temperature of 260 ° C or higher and an oxygen concentration of 10% or lower, and winding up the polyurethaneurea urea elastic yarn.
Non-limiting examples of the diisocyanate used in the production of the polyurethaneurea elastic yarn in the present invention include 4,4'-diphenylmethane diisocyanate, 1,5'-naphthalene diisocyanate, 1,4'-phenylene diisocyanate, hexa Methylene diisocyanate, 1,4'-cyclohexane diisocyanate, 4,4'-dicyclohexylmethane diisocyanate, and isophorone diisocyanate. Among these diisocyanates, 4,4'-diphenylmethane diisocyanate and the like May be used, and it is preferable to use one or more of the diisocyanates listed above.
The polymer diol used in the present invention is a copolymer of polytetramethylene ether glycol, polytrimethylene ether glycol, polypropylene glycol, polycarbonate diol, a mixture of alkylene oxide and lactone monomer and poly (tetramethylene ether) glycol, 3- A copolymer of methyl-tetrahydrofuran and tetrahydrofuran, or a mixture of two or more thereof, but is not limited thereto.
At this time, it is preferable that the NCO% of the prepolymer is in the range of 2.6 to 3.0% in order to exhibit proper physical properties as the polyurethaneurea elasticity yarn to increase the hard segment content. If the NCO% of the prepolymer is less than 2.6% or exceeds 3.0%, a serious deterioration of the physical properties of the elastic yarn is caused.
On the other hand, as the chain extender, diamines are used, and in the present invention, it is preferable to use 100% of ethylenediamine.
As the chain terminator for the polyurethaneurea, an amine having one functional group such as diethylamine, monoethanolamine, dimethylamine, and the like can be used, but is not limited thereto.
On the other hand, the present invention is characterized in that the polyurethane-urea spinning stock solution is irradiated with nitrogen at a temperature of 260 占 폚 or higher and an oxygen concentration of 10% or lower.
In order to prevent the occurrence of yellowing of the yarn under the condition of the high temperature of 260 ° C or higher, the yellowing of the yarn can be prevented by applying the nitrogen radiation having the oxygen concentration of 10% or less.
Further, in the present invention, in order to prevent discoloration and deterioration of physical properties of polyurethane-urea by a heat treatment process accompanying ultraviolet rays, atmospheric smog and spandex processing, it is preferable to add a stereogenic phenolic compound, a benzofuran- Based compound, a benzotriazole-based compound, a polymeric tertiary amine stabilizer, and the like.
In addition to the above-mentioned components, the polyurethane-urea elastic yarn according to the present invention may further include a pigment or dye which is a complementary color of yellow to prevent yellowing of the yarn.
Further, the polyurethane-urea elastic yarn of the present invention may contain additives such as titanium dioxide, magnesium stearate and the like in addition to the above components.
The polyurethane-urea elastic yarn produced by the above-mentioned production method is characterized in that the b value of the yarn is -4.0 to 6.0.
Hereinafter, the present invention will be described concretely with reference to Examples. However, the following Examples and Experimental Examples are merely illustrative of one form of the present invention, and the scope of the present invention is not limited by the following Examples and Experimental Examples .
Example One
4,4'-diphenylmethane diisocyanate and polytetramethylene glycol were prepared with a capping ratio (CR) of 1.72 and an NCO% of 2.70%. As the chain extender, 100 mol% of ethylenediamine was used, and diethylamine was used as a chain termination agent. The ratio of the chain extender and the solvent was set at 8: 1, and the amine used was made to have a total concentration of 7 mol%. Dimethylacetamide was used as a solvent, and polyurethaneurea having a solid content of 35 wt% A spinning solution was obtained.
Further, 1.5 wt% of triethylene glycol-bis-3- (3-tertiarybutyl-4-hydroxyphenyl) propionate as an antioxidant and 1 wt% of melamine polyphosphate as a chlorine-containing agent in the polyurethane- 4.0% by weight of a hydrotalcite-coated Mg 4 Al 2 (OH) 12 CO 3 .3H 2 O coated with 0.5% by weight of titanium dioxide as an optical agent, and 0.001% by weight of a blue dye, Poly-RLS, Thereby preparing a urea spinning solution.
The spinning solution obtained as described above was dry-spun at a rate of 1,000 m / min under conditions of an oxygen concentration of 2% and a temperature of 270 ° C to prepare a polyurethane-urea elastic yarn of 20 denier 1 filaments.
Example 2
The polyurethane-urea elastic yarn was produced in the same manner as in Example 1, except that the oxygen concentration was changed to 5%.
Example 3
The polyurethaneurea elastic yarn was prepared in the same manner as in Example 1, except that the oxygen concentration was changed to 10%.
Comparative Example One
The polyurethaneurea elastic yarn was produced in the same manner as in Example 1, except that the oxygen concentration was changed to 17%.
Experimental Example
The physical properties of the polyurethane-urea elastic yarns prepared in Examples 1 to 3 and Comparative Example 1 were evaluated by the following methods, and the results are shown in Table 1 below.
(1) Color measurement of original yarn
The color L value at a D65 light source and 10 ° condition was measured using a color difference meter (CR-400 manufactured by Minolta Co., Ltd.). The L, a, and b values measured in the spectrophotometer are the colorimetric values calculated from the CIE 1976 CIE Lab color difference equation after measuring the reflectance of the sample.
In this case, L value represents lightness, and a value is red when + side, green when - side is green, b value is yellow when positive side, blue when negative side is, and yellow when b value is -4.0 to 6.0 I do not think so.
As can be seen from the above Table 1, it was found that the yellowing of the yarn did not occur in spite of the high temperature radiation when the nitrogen was radiated under the condition of the oxygen concentration of 10% or less (Examples 1 to 3).
Claims (3)
Dissolving the chain extender and the chain extender in a solvent to prepare an amine solution;
Stirring and chain extending the prepolymer solution and the amine solution to prepare a polyurethane-urea spinning solution; And
And spinning the polyurethane-urea spinning stock solution at a temperature of 260 ° C or higher and an oxygen concentration of 5-10%
The NCO% of the prepolymer is 2.6 to 3.0%, the chain extender is 100% of ethylenediamine,
Wherein the b value of the yarn is 0.7 to 2.6.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150108534A KR101638164B1 (en) | 2015-07-31 | 2015-07-31 | Polyurethanurea elastic fiber using nitrogen spinning and method of manufacturing the same |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR1020150108534A KR101638164B1 (en) | 2015-07-31 | 2015-07-31 | Polyurethanurea elastic fiber using nitrogen spinning and method of manufacturing the same |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| KR101638164B1 true KR101638164B1 (en) | 2016-07-11 |
Family
ID=56499634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| KR1020150108534A KR101638164B1 (en) | 2015-07-31 | 2015-07-31 | Polyurethanurea elastic fiber using nitrogen spinning and method of manufacturing the same |
Country Status (1)
| Country | Link |
|---|---|
| KR (1) | KR101638164B1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102254223B1 (en) * | 2019-12-17 | 2021-05-18 | 효성티앤씨 주식회사 | Recycling spandex yarn and manufacturing method for the same |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100227004B1 (en) * | 1993-04-02 | 1999-10-15 | 미리암 디. 메코너헤이 | High-speed spun polyether-based spandex |
| KR20050050474A (en) * | 2003-11-25 | 2005-05-31 | 태광산업주식회사 | High heat-resistance polyurethaneurea elastic fiber and method for preparation thereof |
| JP2008095253A (en) * | 2006-10-16 | 2008-04-24 | Fujibo Holdings Inc | Wound body of polyurethane elastic yarn and method for producing the same |
| KR20140096681A (en) * | 2013-01-28 | 2014-08-06 | 주식회사 효성 | Spanedx fibers having improved discoloration-resistance and method for preparing the same |
-
2015
- 2015-07-31 KR KR1020150108534A patent/KR101638164B1/en active IP Right Grant
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100227004B1 (en) * | 1993-04-02 | 1999-10-15 | 미리암 디. 메코너헤이 | High-speed spun polyether-based spandex |
| KR20050050474A (en) * | 2003-11-25 | 2005-05-31 | 태광산업주식회사 | High heat-resistance polyurethaneurea elastic fiber and method for preparation thereof |
| JP2008095253A (en) * | 2006-10-16 | 2008-04-24 | Fujibo Holdings Inc | Wound body of polyurethane elastic yarn and method for producing the same |
| KR20140096681A (en) * | 2013-01-28 | 2014-08-06 | 주식회사 효성 | Spanedx fibers having improved discoloration-resistance and method for preparing the same |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102254223B1 (en) * | 2019-12-17 | 2021-05-18 | 효성티앤씨 주식회사 | Recycling spandex yarn and manufacturing method for the same |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| KR101499310B1 (en) | Method for preparing polyurethaneurea elastic fiber | |
| KR101638164B1 (en) | Polyurethanurea elastic fiber using nitrogen spinning and method of manufacturing the same | |
| KR20160079158A (en) | Improved Dyeing Spandex fiber | |
| KR101157335B1 (en) | A Process for Preparing Polyurethaneurea Elastic Fiber having high Power | |
| KR101148583B1 (en) | A Process for Preparing Polyurethaneurea Elastic Fiber having high Power and elongation | |
| KR101578156B1 (en) | Polyurethanurea elastic fiber having an excellent indexes of evenness and power and method of manufacturing the same | |
| KR101426208B1 (en) | Polyurethaneurea elastic fiber with high uniformity and excellent heat settable property | |
| CN108138388B (en) | Polyurethane or polyurethane urea elastic yarn having improved colorability and method for preparing the same | |
| KR101941317B1 (en) | Polyurethaneurea elastic fiber with low temperature workability | |
| EP3696301B1 (en) | Polyurethane urea elastic yarn having improved dyeability and manufacturing method therefor | |
| KR101396107B1 (en) | Polyurethaneurea elastic fiber with improved heat setting property and manufacturing method thereof | |
| KR101312843B1 (en) | A Process for Preparing Polyurethaneurea Elastic Fiber having high Power and good recovery | |
| KR101675280B1 (en) | Polyurethanurea elastic fiber and method of manufacturing the same | |
| KR101157327B1 (en) | A Process for Preparing Polyurethaneurea Elastic Fiber having high Power and Heat-resistance and fiber using it | |
| US12030978B2 (en) | Polyurethane urea elastic yarn dyeable with reactive dye and manufacturing method therefor | |
| KR20140094357A (en) | Polyurethanurea elastic yarn having improved power and elastic recovery and method for preparing the same | |
| KR101253420B1 (en) | Polyurethaneurea Elastic Fiber having high Power and Process for Preparing it | |
| KR20150043906A (en) | Polyurethanurea elastic fiber having a high resilience and method of manufacturing the same | |
| KR20200024054A (en) | Elastic fiber having improved dying property and manufacturing method thereof | |
| KR102685474B1 (en) | Elastic fiber having improved heat setting property and method of manufacturing the same | |
| KR101395973B1 (en) | Polyurethaneurea elastic fiber with improved heat setting property and manufacturing method thereof | |
| KR101453649B1 (en) | Polyurethaneurea elastic fiber and manufacturing method of the same | |
| KR20180044532A (en) | polyurethanurea elastic fiber and a manufacturing method having high elongation | |
| US20230242700A1 (en) | Polyurethane urea elastic yarn dyeable with reactive dye and manufacturing method therefor | |
| KR20170080099A (en) | Spandex fiber with excellent power and process for preparing the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AMND | Amendment | ||
| AMND | Amendment | ||
| X701 | Decision to grant (after re-examination) | ||
| GRNT | Written decision to grant | ||
| FPAY | Annual fee payment |
Payment date: 20190611 Year of fee payment: 4 |