WO2015026051A1 - 균일성과 열세트성이 우수한 폴리우레탄우레아 탄성사 - Google Patents
균일성과 열세트성이 우수한 폴리우레탄우레아 탄성사 Download PDFInfo
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- WO2015026051A1 WO2015026051A1 PCT/KR2014/004980 KR2014004980W WO2015026051A1 WO 2015026051 A1 WO2015026051 A1 WO 2015026051A1 KR 2014004980 W KR2014004980 W KR 2014004980W WO 2015026051 A1 WO2015026051 A1 WO 2015026051A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- yarn
- elastic yarn
- polyurethane urea
- cross
- diisocyanate
- Prior art date
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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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/08—Processes
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—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
- D01D5/00—Formation of filaments, threads, or the like
- D01D5/04—Dry spinning methods
-
- 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
- D01F1/07—Addition of substances to the spinning solution or to the melt for making fire- or flame-proof filaments
-
- 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
- D01F1/106—Radiation shielding agents, e.g. absorbing, reflecting agents
-
- 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
- D01F6/72—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyureas
-
- 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
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/04—Heat-responsive characteristics
- D10B2401/046—Shape recovering or form memory
-
- D—TEXTILES; PAPER
- D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
- D10B2401/00—Physical properties
- D10B2401/06—Load-responsive characteristics
- D10B2401/061—Load-responsive characteristics elastic
Definitions
- the present invention relates to a polyurethaneurea elastic yarn having excellent uniformity and heat setability. More specifically, 2 to 25 mol% of 2,4'-diphenylmethane diisocyanate is mixed with at least one diisocyanate including 4,4'-diphenylmethane diisocyanate as diisocyanate in preparing the polyurethane prepolymer. It relates to a polyurethane urea elastic yarn having excellent uniformity and heat setability, characterized in that the solid content of the final polyurethane urea polymer is 40% by weight or more.
- Polyurethaneurea is generally a primary polymerization reactant that reacts a polyol with an excess of diisocyanate compound to obtain a prepolymer having isocyanate groups at both ends of the polyol, and the prepolymer is dissolved in a suitable solvent and then dissolved in the solution. After adding a diamine-based or diol-based chain extender and reacting a chain terminator such as monoalcohol or monoamine, etc. to form a spinning solution of polyurethaneurea fibers, polyurethaneurea elastic yarn is formed by dry and wet spinning. Get
- polyurethaneurea elastic yarns are used in various applications because of their inherent properties with excellent elasticity and elastic recovery ability, and as the range of applications thereof is expanded, new additional properties are continuously required for existing fibers.
- the polyurethane urea elastic yarns are thermally embrittled by the high heat treatment for setting in the post-processing after mixing with heat-sensitive counterparts (nylon, silk, cotton, etc.), which causes yellowing and deterioration of the fabric. Will cause problems.
- heat-sensitive counterparts nylon, silk, cotton, etc.
- US Pat. No. 5,948,875 discloses a method for improving the thermosetability of polyurethaneurea elastic yarn by using 50 mol% or more of 2-methyl-1,5-pentanediamine as a chain extender.
- 6,472,494 discloses a method for improving the thermosetability of polyurethane urea elastic yarn by applying a mixed 2,4'-diphenylmethane diisocyanate content of 23 to 55 mol%, in Korea Patent No. 0,942,359
- a method of improving thermosetability by mixing 2-25 mol% of, 4'-diphenylmethane diisocyanate and using 1,2-diaminopropane as an auxiliary chain extender is disclosed.
- the technique disclosed by the above patents the heat resistance is poor, the modulus and the elastic recovery rate is insufficient to reduce the tension during spinning and the increase of the flow rate is disadvantageous for spinning workability, the yarn uniformity is insufficient to apply the cross-woven fabric There may be a disadvantage that the quality of the fabric is poor.
- polyurethane urea elastic yarn having excellent uniformity and heat setability, characterized in that the polyurethane urea spinning stock solution is prepared by spinning a solid content of the final polyurethane urea polymer of 40% by weight or more.
- the content of the first diisocyanate is 75 to 98 mol% and the content of the second diisocyanate is 2 to 25 mol%, wherein the second diisocyanate is 2,4'-di It is characterized by using phenylmethane diisocyanate.
- the 2,4'-diphenylmethane diisocyanate has a three-dimensional structure compared to the existing 4,4'-diphenylmethane diisocyanate, and due to the steric hindrance, the soft-segmentation of the hydrogen segment and the intramolecular hydrogen bond of the hard segment are weakened. By exhibiting the same effect as the content is increased, there is an effect of improving the heat setability of the yarn.
- the solids content of the final polyurethaneurea polymer is characterized by at least 40% by weight. If the solid content is more than 40% by weight, the deviation between the drying rate of the yarn surface and the solvent diffusion rate between the yarn inner-surface during spinning is reduced, so that the cross section of the yarn is closer to the circular shape, and the value of the cross section is close to 1.0. The closer the cross-sectional shape of to 1.0 is, the better the uniformity of the yarn.
- Polyurethane urea elastic yarn according to the present invention is characterized in that the cross-sectional shape of the yarn is less than 1.20, uster% is less than 1.0, Heat Set Efficiency (HSE) is 50% or more after treatment of dry heat temperature 170 °C.
- HSE Heat Set Efficiency
- the present invention by producing a polyurethane urea elastic yarn having excellent uniformity and heat setability, there is no deterioration in uniformity, and thus the quality of the fabric is excellent, and heat setting at low temperature is possible, thereby preventing thermal embrittlement of the other company.
- the yellowing and the touch of the exhibit excellent effects.
- the elastic yarn according to the embodiment of the present invention polymerizes a polyol in an excess of diisocyanate to obtain a prepolymer, and dissolves it in an organic solvent, and then, by adding a chain extender and a chain terminator to the solution, secondary polymerization is performed.
- a chain extender and a chain terminator may be added all at once or divided into two or more stages.
- diisocyanate used in the production of the polyurethaneurea elastic yarn in the present invention are 4,4'-diphenylmethane diisocyanate, 1,5'-naphthalene diisocyanate, 1,4'-phenylenedi isocyanate, hexamethylene di Isocyanate, 1,4'-cyclohexanediisocyanate, 4,4'-dicyclohexylmethane diisocyanate, or isophorone diisocyanate and the like, including 4,4'-diphenylmethane diisocyanate.
- 2,4'-diphenylmethane diisocyanate is used by mixing 1 or more diisocyanate, and the content of 2,4'- diphenylmethane diisocyanate is suitable for 2-25 mol%.
- the 2,4'-diphenylmethane diisocyanate has a three-dimensional structure compared to the existing 4,4'-diphenylmethane diisocyanate, and due to the steric hindrance, the soft-segmentation of the hydrogen segment and the intramolecular hydrogen bond of the hard segment are weakened. By exhibiting the same effect as the content is increased, there is an effect of improving the heat setability of the yarn.
- the content of 4'-diphenylmethane diisocyanate is preferably in the above range.
- the polymer diols used in the present invention are polytetramethylene ether glycol, polytrimethylene ether glycol, polypropylene glycol, polycarbonate diol, copolymer of a mixture of alkylene oxide and lactone monomer and poly (tetramethylene ether) glycol, 3-
- the copolymer of methyl-tetrahydrofuran and tetrahydrofuran, etc. it can be illustrated as 1 type, or 2 or more types of these, but it is not necessarily limited to these.
- the isocyanate weight ratio of the prepolymer is preferably 1.7 to 4.1% for proper physical expression of the polyurethaneurea elastic yarn. If the isocyanate weight ratio of the prepolymer is less than 1.7% or more than 4.1%, severe physical property degradation occurs.
- Diamines are used as the chain extender, and examples thereof include ethylenediamine, 1, 2-diaminopropane, 1, 3-diaminopropane, 1,4-diaminobutane, 2,3-diaminobutane, 1, One kind or a mixture of two or more kinds thereof, such as 5-diaminopentane, 1, 6-hexamethylenediamine and 1,4-cyclohexanediamine, can be exemplified.
- an amine having a monofunctional group for example, diethylamine, monoethanolamine, dimethylamine and the like can be used.
- the solid content of the final polyurethaneurea polymer is characterized in that more than 40% by weight. If the solid content is more than 40% by weight, the content of the solvent is lowered than the solid content, so that the variation of the solvent diffusion rate between the surfaces within the yarn is reduced compared to the solvent drying rate of the yarn surface during spinning, resulting in more uniform drying.
- the cross-sectional shape of the cross section exhibits an effect of approaching a circular shape, and the cross-sectional shape value closes to 1.0. The closer the cross-sectional shape value is to 1.0, the elastic yarn has a uniform circular cross section, which improves uster%, and when knitting and dyeing the cross / woven fabric using such elastic yarn, the quality of the fabric is improved.
- a steric hindrance phenol compound in order to prevent discoloration of the polyurethane urea and deterioration of physical properties due to ultraviolet rays, atmospheric smog, and heat treatment associated with spandex processing, a steric hindrance phenol compound, a benzofuran-one compound, and a semicarbazide Type compound, a benzo triazole type compound, a polymeric tertiary amine stabilizer, etc. can be added combining them suitably.
- the polyurethaneurea elastic yarn of the present invention may include additives such as titanium dioxide, magnesium stearate, and the like in addition to the above components.
- the NCO% measurement method and the physical properties of the polyurethaneurea elastic yarn of the polymer mentioned in Examples and Comparative Examples to be described later were measured as follows.
- NCO% [100 ⁇ 2 ⁇ NCO chemical formula ⁇ (capping ratio-1)] / ⁇ (diisocyanate molecular weight ⁇ capping ratio) + polyol molecular weight ⁇
- capping ratio is the diisocyanate molar ratio / polyol molar ratio.
- the sample is measured at 10cm in length and 100cm / min in tensile speed. At this time, the strength and elongation at break are measured, and the load (200% modulus) on the yarn is also measured at 200% elongation.
- MEL machine Textechno Co., Ltd.
- the yarn is cut perpendicular to the longitudinal direction, the W and H lengths are measured under the microscope under the microscope, and the ratio is calculated.
- H is the length of the shortest straight line perpendicularly intersecting the longest straight line (W) traversing the yarn cross section)
- the Uster% measuring device (KET-QT) is used to measure the speed of the feeding roller differently depending on the yarn de (20d is 30m / min).
- the sensor automatically reads the thickness of the yarn dissolved for 20 seconds at a constant speed and calculates the average value to draw a 0% reference line. Based on this value, if the thickness of the yarn read by the sensor per unit time is thicker, the point is recorded in the (+) area compared to the 0% reference line. If the thickness is thin, the point is recorded in the (-) area compared to the 0% reference line. Painted.
- U% is calculated by calculating the deviation from the 0% reference line. The smaller the value, the better the uniformity of the yarn.
- Dry heat treated yarn was moist heat treated at 100 °C for 30 minutes in a relaxed state and dried at room temperature
- HSE (%) ⁇ (L3-L0) / (L1-L0) ⁇ ⁇ 100
- Capping Ratio (CR) 1.80, 95 mol% of 4,4'-diphenylmethane diisocyanate and 5 mol% of 2,4'-diphenylmethane diisocyanate were prepared.
- Ethylenediamine and 1,2-diaminopropane were used as the chain extender at a ratio of 80 mol% and 20 mol%, and diethylamine was used as the chain terminator.
- the ratio of the chain extender to the chain terminator was 10: 1, the amine used was prepared at a total concentration of 7 mol%, and dimethyl acetamide was used as the solvent.
- the polyurethane having a solid content of 45% by weight of the final polymer was used. A urea spinning solution was obtained.
- the spinning stock solution obtained as described above was dry spun at 900 m / min to prepare a polyurethane urea elastic yarn of 20 denia 1 filament, and the physical properties thereof are shown in Table 1 below.
- a polyurethaneurea elastic yarn was prepared in the same manner as in Example 1 except that 85 mol% of 4,4'-diphenylmethane diisocyanate and 15 mol% of 2,4'-diphenylmethane diisocyanate were prepared. It was shown in Table 1 to evaluate the physical properties.
- Polyurethane urea elastic yarn was prepared in the same manner as in Example 1 except that 75 mol% of 4,4'-diphenylmethane diisocyanate and 25 mol% of 2,4'-diphenylmethane diisocyanate were prepared. It was shown in Table 1 to evaluate the physical properties.
- a polyurethaneurea elastic yarn was prepared in the same manner as in Example 1 except that 70 mol% of 4,4'-diphenylmethane diisocyanate and 30 mol% of 2,4'-diphenylmethane diisocyanate were prepared. It was shown in Table 1 to evaluate the physical properties.
- a polyurethane urea elastic yarn was prepared in the same manner as in Example 3 except that the solid content of the final polymer was 35% by weight, and the physical properties thereof are shown in Table 1 below.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Textile Engineering (AREA)
- General Chemical & Material Sciences (AREA)
- Polymers & Plastics (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Organic Chemistry (AREA)
- Manufacturing & Machinery (AREA)
- Mechanical Engineering (AREA)
- Artificial Filaments (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
Description
Claims (4)
- 아래의 측정 방법에 따른 원사의 단면이형도가 1.20 이하, HSE가 50% 이상인 폴리우레탄우레아 탄성사.1) 단면이형도 측정방법 : 폴리우레탄우레아 탄성사를 길이 방향에 수직으로 절단하여 단면의 W 및 H 길이를 현미경으로 측정한 뒤 비율을 계산한다. 단면이형도 값이 1.0에 근접할수록 탄성사의 단면이 원형에 가까우며 균일성이 우수하다.단면이형도 = W/H(W : 원사 단면을 횡단(cross)하는 가장 긴 직선 길이H : 원사 단면을 횡단하는 가장 긴 직선(W)과 수직으로 교차하는 가장 짧은 직선의 길이)2) HSE 측정방법 : 초기 원사(L0)를 대기에 노출된 상태로 100% 신장(L1) 한 후, 170℃에서 1분간 건열처리 하였다가 실온으로 냉각한 다음 원사 길이(L2)를 측정한다. 건열 처리 된 원사를 이완된 상태로 100℃에서 30분간 습열 처리하여 실온에서 건조하여 원사 길이(L3)를 측정한다.HSE(%) = {(L3-L0)/(L1-L0)} × 100
- 제1항의 폴리우레탄우레아 탄성사를 제조함에 있어서,2,4'-디페닐메탄디이소시아네이트가 디이소시아네이트의 전체 중량 대비 2내지 25몰% 포함되는 것을 특징으로 하는 폴리우레탄우레아 탄성사.
- 제1항의 폴리우레탄우레아 탄성사를 제조함에 있어서,방사 노즐 통과 직전 중합물의 고형분 함량이 40중량%이상인 것을 특징으로 하는 폴리우레탄우레아 탄성사.
- 제1항의 폴리우레탄우레아 탄성사를 제조함에 있어서,폴리올과 디이소시아네이트의 1차 중합시의 NCO%는 1.7 내지 4.1%의 범위를 갖는 것을 특징으로 하는 폴리우레탄우레아 탄성사.
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
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JP2016513884A JP6093090B2 (ja) | 2013-08-20 | 2014-06-05 | 均一性と熱硬化性に優れるポリウレタンウレア弾性糸 |
DE112014003380.4T DE112014003380T5 (de) | 2013-08-20 | 2014-06-05 | Elastogarn aus Polyurethanharnstoff mit ausqezeichneter Gleichmäßigkeit und Thermofixierbarkeit |
US14/893,033 US20160122906A1 (en) | 2013-08-20 | 2014-06-05 | Polyurethane urea elastic yarn having excellent uniformity and thermosetting property |
CN201480028234.5A CN105247121A (zh) | 2013-08-20 | 2014-06-05 | 均匀性和热定形性好的聚氨酯脲弹性纱 |
Applications Claiming Priority (2)
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KR1020130098754A KR101426208B1 (ko) | 2013-08-20 | 2013-08-20 | 균일성과 열세트성이 우수한 폴리우레탄우레아 탄성사 |
KR10-2013-0098754 | 2013-08-20 |
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WO2015026051A1 true WO2015026051A1 (ko) | 2015-02-26 |
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US (1) | US20160122906A1 (ko) |
JP (1) | JP6093090B2 (ko) |
KR (1) | KR101426208B1 (ko) |
CN (1) | CN105247121A (ko) |
DE (1) | DE112014003380T5 (ko) |
WO (1) | WO2015026051A1 (ko) |
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KR101959146B1 (ko) * | 2017-12-27 | 2019-03-15 | 효성티앤씨 주식회사 | 염색성이 개선된 폴리우레탄우레아 탄성사 및 이의 제조방법 |
CN114181373B (zh) * | 2022-01-29 | 2023-08-11 | 万华化学集团股份有限公司 | 一种舒适氨纶的制备工艺及制得的氨纶 |
CN115197391B (zh) * | 2022-08-15 | 2023-10-31 | 河北邦泰氨纶科技有限公司 | 一种纤维级聚氨酯切片及其制备方法和应用 |
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2013
- 2013-08-20 KR KR1020130098754A patent/KR101426208B1/ko active IP Right Grant
-
2014
- 2014-06-05 JP JP2016513884A patent/JP6093090B2/ja active Active
- 2014-06-05 WO PCT/KR2014/004980 patent/WO2015026051A1/ko active Application Filing
- 2014-06-05 DE DE112014003380.4T patent/DE112014003380T5/de not_active Withdrawn
- 2014-06-05 US US14/893,033 patent/US20160122906A1/en not_active Abandoned
- 2014-06-05 CN CN201480028234.5A patent/CN105247121A/zh active Pending
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
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JPH0782608A (ja) * | 1993-09-10 | 1995-03-28 | Asahi Chem Ind Co Ltd | 高強力弾性糸の製造方法 |
JPH07197318A (ja) * | 1993-12-28 | 1995-08-01 | Asahi Chem Ind Co Ltd | 異形断面ポリウレタンポリウレア弾性糸およびその製法 |
JP2005120545A (ja) * | 2003-10-20 | 2005-05-12 | Toyobo Co Ltd | 弾性繊維およびその製造方法 |
KR20100070884A (ko) * | 2008-12-18 | 2010-06-28 | 주식회사 효성 | 초저온에서의 열세트성이 우수한 폴리우레탄우레아 탄성사의 제조방법 |
KR20110078283A (ko) * | 2009-12-31 | 2011-07-07 | 주식회사 효성 | 열세트성이 향상된 폴리우레탄우레아 탄성사의 제조방법 |
Also Published As
Publication number | Publication date |
---|---|
JP6093090B2 (ja) | 2017-03-08 |
KR101426208B1 (ko) | 2014-08-01 |
JP2016520164A (ja) | 2016-07-11 |
DE112014003380T5 (de) | 2016-06-02 |
US20160122906A1 (en) | 2016-05-05 |
CN105247121A (zh) | 2016-01-13 |
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