WO2013115096A1 - 常圧分散可染性ポリエステル組成物、その製造方法およびそれからなる繊維およびそれからなる成形体 - Google Patents
常圧分散可染性ポリエステル組成物、その製造方法およびそれからなる繊維およびそれからなる成形体 Download PDFInfo
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- WO2013115096A1 WO2013115096A1 PCT/JP2013/051585 JP2013051585W WO2013115096A1 WO 2013115096 A1 WO2013115096 A1 WO 2013115096A1 JP 2013051585 W JP2013051585 W JP 2013051585W WO 2013115096 A1 WO2013115096 A1 WO 2013115096A1
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- polyester composition
- polyester
- polyethylene glycol
- propanediol
- fiber
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- 0 *CC(C*c(cc1)ccc1N)N Chemical compound *CC(C*c(cc1)ccc1N)N 0.000 description 2
Classifications
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- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/02—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds
- C08G63/12—Polyesters derived from hydroxycarboxylic acids or from polycarboxylic acids and polyhydroxy compounds derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/16—Dicarboxylic acids and dihydroxy compounds
- C08G63/18—Dicarboxylic acids and dihydroxy compounds the acids or hydroxy compounds containing carbocyclic rings
- C08G63/181—Acids containing aromatic rings
- C08G63/183—Terephthalic acids
-
- 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
- C08G63/00—Macromolecular compounds obtained by reactions forming a carboxylic ester link in the main chain of the macromolecule
- C08G63/66—Polyesters containing oxygen in the form of ether groups
- C08G63/668—Polyesters containing oxygen in the form of ether groups derived from polycarboxylic acids and polyhydroxy compounds
- C08G63/672—Dicarboxylic acids and dihydroxy compounds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
- C08L71/02—Polyalkylene oxides
-
- 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
- D01F6/78—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products
- D01F6/84—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyesters
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- D—TEXTILES; PAPER
- D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
- D06P—DYEING OR PRINTING TEXTILES; DYEING LEATHER, FURS OR SOLID MACROMOLECULAR SUBSTANCES IN ANY FORM
- D06P3/00—Special processes of dyeing or printing textiles, or dyeing leather, furs, or solid macromolecular substances in any form, classified according to the material treated
- D06P3/34—Material containing ester groups
- D06P3/52—Polyesters
- D06P3/54—Polyesters using dispersed dyestuffs
Definitions
- the present invention relates to a normal pressure dispersible dyeable polyester composition and a method for producing the same, and more specifically, normal pressure that achieves both structural stability when fiberized and dyeability to a disperse dye at less than 100 ° C.
- the present invention relates to a dispersible dyeable polyester composition and a method for producing the same.
- Polyester compositions are used for various purposes because of their useful functionality, and are used, for example, for clothing, materials, and medical use.
- polyethylene terephthalate is excellent in terms of versatility and practicality and is preferably used.
- the polyethylene terephthalate structure is difficult to be dyed.
- the dyeing pot is pressurized and the temperature is not raised to 130 ° C., so that it is difficult to dye. It has been known.
- polyethylene terephthalate is often desired to be used in combination with other fiber materials such as nylon and polyurethane, and natural fibers such as wool and cotton. If the fiber is dyed at a dyeing temperature of 100 ° C. or higher, the quality will be lowered, such as a decrease in strength and contamination of the dye to other materials.
- Polyethylene terephthalate reduces the strength and contamination of other materials by reducing the dyeing temperature (less than 100 ° C, for example, 93 ° C to 98 ° C) and dyeing the composite fiber so as not to impair the quality of other materials. There is a problem that the dyeability of the dye is inferior.
- a modified polyester composition in which polyethylene glycol having a number average molecular weight of 600 to 4000 is copolymerized by 3% by weight or more and 10% by weight or less, and a hindered phenol antioxidant is coexisted in order to improve the oxidative degradation of polyethylene glycol.
- Patent Document 1 A method for producing a modified polyester composition that facilitates dyeing by using a product has been proposed (Patent Document 1).
- Patent Document 1 A method for producing a modified polyester composition that facilitates dyeing by using a product has been proposed.
- Patent Document 1 since polyethylene glycol is copolymerized in a large amount, the molecular structure of the molded product is not stable.
- the dry heat shrinkage rate and delayed shrinkage rate are large. There is a problem that the value is inferior.
- a hindered phenolic antioxidant must be used in combination with the hindered phenolic antioxidant in order to suppress strength reduction, but the hindered phenolic antioxidant itself causes structural changes due to ultraviolet rays and the like, and the molded product turns yellow. There is also a problem.
- a modified polyester fiber obtained by polycondensation reaction of alkoxylated 2-methyl-1,3-propanediol, alkylene glycol and terephthalic acid or an alkyl ester thereof is also used. It has been proposed (Patent Document 3). However, even in this method, about 10 mol% of alkoxylated 2-methyl-1,3-propanediol must be copolymerized in order to obtain sufficient dyeability when dyeing at a dyeing temperature of less than 100 ° C. Here, when 10 mol% or more of alkoxylated 2-methyl-1,3-propanediol is copolymerized, another problem such as lack of stability of the resulting fiber structure is observed. Stabilization could not be achieved at the same time.
- an atmospheric pressure dispersible polyester composition that has both dyeability to disperse dyes below 100 ° C. and structural stability when fiberized has not been developed yet.
- An object of the present invention is to provide a normal pressure dispersible dyeable polyester composition and a method for producing the same, which achieve both structural stability when fiberized and disperse dyeability at less than 100 ° C.
- the atmospheric pressure dispersible dyeable polyester composition of the present invention that solves the above-mentioned problem is a polyester composition comprising a component comprising a dicarboxylic acid, a diol and polyethylene glycol, the main repeating component comprising a polyester comprising ethylene terephthalate,
- the polyester contains 5 to 10 mol% of a diol component having 3 carbon chains having side chains with respect to the total of the diol components, and the polyethylene glycol content in the polyester composition is 2 to 4% by weight.
- the content of the dimer is 0.35% by weight or less.
- the process for producing a normal pressure dispersible dyeable polyester composition comprises a polyester composition comprising a dicarboxylic acid or an ester-forming derivative thereof and a polyester obtained by polycondensation of a diol or an ester-forming derivative thereof in the presence of a polycondensation catalyst.
- the polyester is added before the start of the ester reaction so that the diol component having 3 side chains and 5 to 10 mol% of the diol component having a side chain is added to the total diol component constituting the polyester. It is characterized in that it is added to the composition so that the content of polyethylene glycol is 2 to 4% by weight.
- the normal pressure dispersible dyeable polyester composition of the present invention has excellent structural stability when fiberized, and excellent disperse dyeability at less than 100 ° C.
- the dyeing temperature can be lowered and pressure dyeing is not required, and the quality of other materials is not impaired even when used in combination with other materials. Energy can be reduced.
- the method for producing a normal-pressure dispersible polyester composition of the present invention can efficiently produce the above-mentioned normal-pressure dispersible polyester composition.
- the normal pressure dispersible dyeable polyester composition of the present invention contains polyester as a main component.
- This polyester contains components composed of dicarboxylic acid, diol and polyethylene glycol, and is obtained by subjecting dicarboxylic acid or its ester derivative, diol or its ester derivative and polyethylene glycol to esterification or transesterification.
- the atmospheric pressure dispersible polyester composition contains the above polyester, uncopolymerized polyethylene glycol, and optionally a by-produced cyclic dimer as components. A disperse dye can also be blended.
- the main repeating unit of the polyester constituting the atmospheric pressure dispersible dyeable polyester composition of the present invention is ethylene terephthalate.
- the content of ethylene terephthalate is preferably 70 mol% or more, more preferably 80 mol% or more, based on all repeating units.
- the polyester contains 5 to 10 mol% of a diol component having 3 carbon chains having side chains, and 100% by weight of the polyester composition.
- a diol component having 3 carbon chains having side chains 2 to 4% by weight of polyethylene glycol and the content of the cyclic dimer formed as a by-product during polymerization to 0.35% by weight or less make it structural stability when fiberized and normal pressure less than 100 ° C. It is essential to achieve both the dyeability of disperse dyes in When one or more of the diol component having 3 side chains and polyethylene glycol, or cyclic dimer is outside the above range, both the dyeability to disperse dyes and the structural stability of the fiber are achieved at less than 100 ° C. Can no longer do.
- the diol component having 3 carbon chains having side chains is 7 to 9 mol% based on the total of the diol components
- polyethylene glycol is 2.5 to 3.5 wt% based on the polyester composition
- cyclic dimer is contained.
- the amount is preferably 0.30% by weight or less.
- the polyethylene glycol content is the total of polyethylene glycol copolymerized with polyester and polyethylene glycol not copolymerized.
- the polyethylene glycol contained in the normal pressure dispersible dyeable polyester composition of the present invention has excellent dyeability to disperse dyes at normal pressure when copolymerized in the polyester, while rubber elasticity even after copolymerization. Therefore, it has the characteristic that the structure of the molecular chain becomes unstable when fiberized.
- the side chains can moderately suppress the rubber elasticity of polyethylene glycol, and the fibers The structure at the time of conversion is stabilized, and the characteristics of easy dyeability of polyethylene glycol are further improved.
- examples of the diol component having 3 carbon chains include 1,3-propanediol and ethylene oxide adducts of 1,3-propanediol.
- examples of the side chain include an alkyl group having 1 to 6 carbon atoms, a phenyl group, and an aryl group.
- examples of the diol component having 3 carbon chains having side chains include 2-methyl-1,3-propanediol, 2,2-dimethyl-1,3-propanediol, and 2-ethyl-1,3-propanediol.
- 2-methyl-1,3-propanediol or ethylene oxide adduct of 2-methyl-1,3-propanediol having a methyl group in the side chain is preferable.
- the number average molecular weight of the polyethylene glycol constituting the normal pressure dispersible dyeable polyester composition of the present invention is not particularly limited.
- the number average molecular weight is preferably 400 to 4000. More preferably, since the fiber structure can be stabilized as the molecular weight decreases, the number average molecular weight of polyethylene glycol is preferably 600 to 2,000.
- the atmospheric pressure dispersible dyeable polyester composition of the present invention has a cyclic dimer content of 0.35 wt% or less in 100 wt% of the polyester composition.
- the content of the cyclic dimer is preferably 0.30% by weight or less.
- the structure of the cyclic dimer is represented by the following formula (1). (Where R 1 and R 2 are a hydrocarbon group having 1 to 6 carbon atoms, a phenyl group, or an aryl group)
- the cyclic dimer is: 2) It is shown by a formula.
- the atmospheric pressure dispersible dye composition of the present invention preferably has a polymer viscosity (o-chlorophenol, 25 ° C., viscosity measured based on JIS K7367) of 0.6 to 0.8, Preferably, it is 0.65 to 0.75 because spinning can be performed stably.
- the normal pressure dispersible dyeable polyester composition of the present invention preferably has a b value (b value in a Hunter value measured with a color difference meter) of 8.0 or less, more preferably 7.0 or less. Good.
- the process for producing a normal pressure dispersible dyeable polyester composition comprises a polyester composition comprising a dicarboxylic acid or an ester-forming derivative thereof and a polyester obtained by polycondensation of a diol or an ester-forming derivative thereof in the presence of a polycondensation catalyst.
- a polyester composition comprising a dicarboxylic acid or an ester-forming derivative thereof and a polyester obtained by polycondensation of a diol or an ester-forming derivative thereof in the presence of a polycondensation catalyst.
- it has side chains before the start of the ester reaction so that the diol component having 3 side chains and 5 to 10 mol% of the diol components having side chains is 5 to 10 mol% with respect to all diol components constituting the polyester.
- a diol component having 3 carbon chains is added, and polyethylene glycol is added to the polyester composition so that the polyethylene glycol content is 2 to 4% by weight.
- the produced polyester composition preferably contains ethylene tere
- the main repeating component of the atmospheric pressure dispersible dyeable polyester composition is a polymerization of ethylene terephthalate, so that a known transesterification or esterification reaction step, a polycondensation reaction step, and a subsequent pelletization step. Go through.
- the molar ratio of ethylene glycol to dimethyl terephthalate is about 1.5 to 2.5. Is preferable because the transesterification rate and by-products such as diethylene glycol can be appropriately controlled.
- a known catalyst can be used. For example, cobalt, magnesium, manganese acetate or oxide is preferably used.
- a slurry having a molar ratio of ethylene glycol to terephthalic acid (ethylene glycol / terephthalic acid) of 1.05 to 1.50 is an ester reaction tank.
- the esterification reaction can be carried out while continuously supplying to. Alternatively, the esterification reaction may be performed after adding all of ethylene glycol and terephthalic acid to the ester reaction tank before starting the esterification reaction.
- the esterification reaction catalyst may be cobalt, magnesium, manganese acetate, oxide, etc., but a slurry of ethylene glycol and terephthalic acid is continuously added in a state where a low polymer is present in the ester reaction tank in advance. Or a method in which a low polymer, ethylene glycol and terephthalic acid are added at the same time before the start of the reaction is preferred because the heat resistance of the resulting polyester is not impaired.
- a known polymerization catalyst can be used as the polycondensation catalyst used in the process for producing the atmospheric pressure dispersible polyester composition of the present invention.
- an antimony compound, a germanium compound, a titanium compound, or the like can be preferably used.
- the diol component having 3 side chains and having a side chain is added before the esterification reaction or transesterification reaction starts, that is, before the ester reaction starts.
- the amount of copolymerization in the resulting normal pressure dispersible dyeable polyester composition can be stabilized.
- the boiling point of ethylene glycol is Since it is close, it may be distilled off from the polycondensation reaction tank together with ethylene glycol during the polycondensation reaction. Therefore, in order to copolymerize the target 2-methyl-1,3-propanediol content in the polymer, the 2-methyl-1,3-propanediol is taken into account in consideration of the amount to be distilled off in advance. Need to be added.
- the amount of 2-methyl-1,3-propanediol distilled off together with ethylene glycol during the polycondensation reaction varies depending on the timing of addition. For example, when 2-methyl-1,3-propanediol is added before the esterification reaction, about 15% by weight of 2-methyl-1,3 based on the amount of 2-methyl-1,3-propanediol added. Propanediol is distilled off during the polycondensation reaction.
- the 2-methyl-1,3-propanediol ethylene oxide adduct may be added, for example, before the start of the esterification reaction, from the time when the esterification reaction is substantially completed to the time before the polymerization reaction is started. It may be added in between, or may be added during the polycondensation reaction.
- the diol component having 3 carbon chains having this side chain can be added by a known method.
- the diol component having 3 carbon chains having side chains may be added in a heated state or may be added at room temperature. Further, when the diol component having 3 carbon chains having side chains is solid at room temperature, it may be added by being dispersed in ethylene glycol or the like, or may be added in a liquid after being dissolved at a melting point or higher. When the diol component having 3 carbon chains having side chains is liquid, it may be diluted with a solvent such as ethylene glycol or added as it is.
- the cyclic dimer represented by the formulas (1) and (2) is 0.35% by weight or less based on the obtained polyester composition. Adjust.
- the content of these cyclic dimers can be suppressed by the addition timing of the diol component having 3 carbon chains having side chains.
- the diol or its ester derivative when added after the esterification reaction or transesterification reaction is substantially completed, the diol or its ester derivative already forms a linear low polymer, so the diol having 3 carbon chains with side chains The component and the dicarboxylic acid or ester derivative thereof are likely to react preferentially, and a cyclic dimer is easily formed.
- the cyclic dimer contained in the normal pressure dispersible dyeable polyester composition of the present invention is likely to be scattered in a vacuum generator such as a steam ejector during the polycondensation reaction. If the annular dimer is scattered in the vacuum circuit, the vacuum circuit may be clogged, which may cause a polymerization reaction delay or polymer coloring (b value increase).
- Polycondensation reaction conditions that suppress such scattering of the cyclic dimer can also be employed. Examples of the polycondensation reaction conditions include a temperature increase rate of the polycondensation reaction and a pressure reduction rate of the polycondensation reaction. The temperature increase rate of the polycondensation reaction temperature is preferably 0.2 ° C. or higher and 5.0 ° C.
- the pressure reduction rate of the polycondensation reaction is preferably 7.5 mmHg or more and 50 mmHg or less as the pressure drop per minute. More preferably, it is 8.5 mmHg or more and 20 mmHg or less.
- polyethylene glycol can be added at any stage until the polyester composition reaches a predetermined degree of polymerization.
- polyethylene glycol is easily colored by heat, and is preferably dispersed uniformly in the polyester composition. For this reason, it is preferable to add from when the esterification reaction or transesterification reaction is substantially completed to the start of the polycondensation reaction.
- the normal-pressure dispersible dyeable polyester composition of the present invention can contain a disperse dye, and is excellent in dyeability and fiber structural stability.
- the polyester composition can contain a well-known additive in the range which does not impair the objective of invention.
- heat-resistant agents such as phosphoric acid and trimethyl phosphate, titanium oxide, and carbon black
- conventionally known antioxidants, anti-coloring agents, light-proofing agents, antistatic agents, ultraviolet absorbers, and the like may be added. Of course it is good.
- the atmospheric pressure dispersible dyeable polyester composition of the present invention can produce polyester fibers by a known method.
- the cross-sectional shape of the polyester fiber of the present invention can be freely selected for, for example, a round cross-section, a hollow cross-section, a multi-leaf cross-section such as a trilobal cross-section, and other irregular cross-sections, and is appropriately selected depending on the application. I can do it.
- polyester fiber is not particularly limited, such as long fiber or short fiber, and in the case of long fiber, it may be multifilament or monofilament.
- the polyester fiber of the present invention is excellent in structural stability such as atmospheric pressure dispersibility and dry heat shrinkage, and in color stability such as fastness to nitric oxide.
- the polyester fiber of the present invention is dyed at 95 ° C. using, for example, a black disperse dye (Dianix Black SR 5% owf), the L value (L value in the Hunter value measured with a color difference meter) is It becomes less than 16.5 and shows dyeability equivalent to that of fibers made of polyethylene terephthalate dyed at 130 ° C.
- a black disperse dye Dianix Black SR 5% owf
- the polyester fiber of the present invention has a dry heat shrinkage ratio (fiber length change rate before and after 160 ° C. heat treatment of undrawn yarn), which is an index indicating the structural stability of the fiber, of less than 10%, which is equivalent to a fiber made of polyethylene terephthalate. Excellent versatility.
- the polyester fiber of the present invention also has a delayed shrinkage (fiber length change rate of unstretched yarn before and after 200 hours), which is an index indicating the structural stability of the fiber, of less than 1.5%, which is equivalent to a fiber made of polyethylene terephthalate. It is excellent in versatility.
- polyesters copolymerized with polyethylene glycol may generally be added with a hindered phenol antioxidant (for example, IR1010 (Ciba Specialty Chemicals)) in order to suppress heat resistance degradation caused by polyethylene glycol.
- a hindered phenol antioxidant for example, IR1010 (Ciba Specialty Chemicals)
- the hindered phenolic antioxidant reacts with nitrogen oxides in the air, so that the structure changes, and the polyester may turn yellow with this structural change. Therefore, the polyester composition copolymerized with polyethylene glycol is yellowish (yellowing), which may impair the commercial value.
- the fiber using the atmospheric pressure dispersible polyester composition of the present invention has the amount of polyethylene glycol within the above-mentioned range, the amount of hindered phenol antioxidant added can be minimized. This yellowing is not seen.
- the polyester fiber of the present invention can be formed into a molded body in which at least a part is used depending on the application and shape to be used.
- the molded article using at least a part of the polyester fiber of the present invention can be applied to woven fabrics, knitted fabrics, nonwoven fabrics, piles, cotton, etc., and the combined fibers include natural fibers such as cotton, hemp, wool, silk, and rayon.
- Recycled fibers such as cupra, semi-synthetic fibers such as acetate, nylon, polyester (polyethylene terephthalate, polypropylene terephthalate, polybutylene terephthalate, etc.), synthetic fibers such as polyacrylonitrile, polyvinyl chloride, and the like can be applied.
- examples of the use of the molded article using at least a part of the polyester fiber of the present invention include uses that require atmospheric dispersibility and dyeability, and are suitable for, for example, fasteners, uniforms, and automotive interior materials. Can be used. It is preferable to use this normal pressure dispersible polyester fiber because yellowing or structural change hardly occurs.
- the polyester fiber of the present invention is not limited to these uses.
- the number of carbon chains having side chains is required. This can be achieved for the first time by an atmospheric pressure dispersible polyester composition having a diol component 3 of 5 to 10 mol% and a polyethylene glycol content of 2 to 4 wt% with respect to the resulting polyester composition and a production method thereof.
- Delayed shrinkage rate (L2-L3) / L2 ⁇ 100 (Formula 2)
- L2 Fiber length within 2 minutes after collection
- L3 Fiber length delayed shrinkage after 200 hours elapse is less than 1.5%:
- ⁇ Delayed shrinkage is 1.5% or more: ⁇
- Example 1 (Transesterification reaction) 2-Methyl-1,3-propanediol can be obtained by adding ethylene glycol and dimethyl terephthalate to a reaction vessel equipped with a rectifying column so that the molar ratio of ethylene glycol / dimethyl terephthalate is 2.0. It added to the low polymer so that it might become 8.0 mol%, and it added so that it might contain in 400 ppm in the low polymer which can obtain cobalt acetate tetrahydrate. Then, while raising the temperature of the reaction vessel from 140 ° C. to 235 ° C., methanol was distilled off to conduct a transesterification reaction to obtain 1750 kg of a low polymer. The transesterification rate at this time was 98%.
- 1,000 kg of the low polymer obtained was transferred to the polycondensation reaction tank while 1,750 kg was left in the ester reaction tank. After completion of the transfer of the low polymer, it is added to the polyester composition capable of obtaining phosphoric acid so as to be 50 ppm in terms of phosphorus, and after 7 minutes, 330 ppm in terms of antimony, acetic acid is obtained relative to the polyester composition from which antimony trioxide is obtained. It added so that it might become 90 ppm with respect to the polyester composition which can obtain cobalt, and 1000 ppm with respect to the polyester composition which can obtain IR1010.
- the temperature of the polycondensation reaction tank when the addition of each additive was completed was 230 ° C. Then, the steam ejector was operated, pressure reduction inside the polycondensation reaction tank was started, and the polycondensation reaction was started.
- the polymerization reactor is depressurized from the initial pressure of 760 mmHg at a depressurization rate of 13.8 mmHg / min.
- the pressure is reduced to about 1.5 mmHg, and then the pressure state is maintained until the target polymer viscosity is reached. did.
- the temperature of the polymerization reactor was increased at a rate of 0.46 ° C./min, and the polycondensation reaction temperature reached 285 ° C. 2 hours after the start of the polycondensation reaction, and the temperature state was maintained until the end of the polycondensation reaction.
- the polycondensation reaction was terminated, and nitrogen was injected into the polycondensation reaction tank to terminate the depressurization.
- the polycondensation reaction time at that time was 3 hours and 0 minutes.
- polyester pellets had a polymer viscosity of 0.66, a b value of 5.5, a content of 2-methyl-1,3-propanediol of 8.0 mol%, and a cyclic dimer of 0.25% by weight. There was no pressure fluctuation during the polycondensation reaction, the polycondensation reaction was carried out stably, and the polymer quality was excellent.
- the obtained polyester composition is dried and then subjected to a spinning machine.
- a spinning temperature of 265 ° C., a base heater 270 ° C., a base surface depth (distance from the base surface to the start of cooling) 35 mm, and a discharge rate of 29.3 g / min. was discharged from a nozzle nozzle having 24 round holes with a hole diameter of 0.30 mm and a hole depth of 0.50 mm.
- the discharged yarn is cooled and solidified by a cooling chimney with a cooling air of 35 m / min, and an oil agent is applied while being focused by an oil supply device at a position of 1.7 m below the base (0.
- the obtained undrawn yarn was subjected to drawing false twisting using a disk false twister at a heater temperature of 180 ° C., a drawing speed of 400 m / min, a DY ratio of 1.55, and a draw ratio of 1.7 times to obtain 56 dtex, 24 filaments.
- the processed yarn was obtained.
- the DY ratio is a ratio D / Y of the peripheral speed (D) of the twisted body and the speed (Y) of the stretching roller.
- the obtained tubular knitted fabric had an L value of 15.3, a nitric oxide fastness of 4th grade, and was excellent in dyeability and nitric oxide fastness.
- Examples 2 to 13 When polymerizing the polyester composition, the type of diol component having 3 side chains and the content thereof, the type of polyethylene glycol (number average molecular weight), and the content thereof are shown in Tables 1 and 2.
- a polyester composition was obtained in the same manner as in Example 1 except that the conditions were changed. The obtained polyester composition was spun and dyed by the same method as in Example 1 and evaluated. All the polyester compositions were stable in the pressure during the polycondensation reaction and excellent in polymer quality. The obtained fiber quality was also excellent.
- Example 14 and 15 About the polycondensation reaction conditions of the polyester composition, the polyester composition was obtained like Example 1 except having changed the temperature increase rate and the pressure reduction rate into the conditions of Table 2. The obtained polyester composition was spun and dyed by the same method as in Example 1 and evaluated. All of the polyester compositions had a stable pressure during the polycondensation reaction and were excellent in polymer quality. The obtained fiber quality was also excellent.
- Example 16 (Esterification reaction / polycondensation reaction)
- the type of diol component having 3 side chains with side chains and its content (2-methyl-1,3-propanediol ethylene oxide adduct is distilled out of the system together with ethylene glycol. Since the added content is contained in the polymer as it is, 6 mol% was added to the obtained polyester composition), the type of polyethylene glycol (number average molecular weight), and the content thereof are shown in Table 2.
- a polyester composition was obtained in the same manner as in Example 1 except that the conditions were changed.
- the obtained polyester composition was spun and dyed by the same method as in Example 1 and evaluated. All of the polyester compositions had a stable pressure during the polycondensation reaction and were excellent in polymer quality. The obtained fiber quality was also excellent.
- polyester composition When the polyester composition was polymerized, it was polymerized by the same method as in Example 1 except that the conditions described in Table 3 were used, and the obtained polyester composition was spun and dyed for evaluation. There were many cyclic dimers in the polymer, and the polycondensation reaction was slightly delayed. The dry heat shrinkage rate, delayed shrinkage rate, and disperse dye dyeability (L value) were also poor.
- the polyester composition capable of obtaining phosphoric acid to be 50 ppm in terms of phosphorus After completion of the transfer of the low polymer, it is added to the polyester composition capable of obtaining phosphoric acid to be 50 ppm in terms of phosphorus, and after 7 minutes, 330 ppm in terms of antimony and cobalt acetate are added to the polyester composition from which antimony trioxide is obtained. 90 ppm was added with respect to the obtained polyester composition, and it added so that it might become 1000 ppm with respect to the polyester composition which can obtain IR1010. After another 5 minutes, 8.0 mol% (10.8 mol% 2-methyl-1,3-propanediol was added to the polyester composition from which 2-methyl-1,3-propanediol was obtained.
- the polymerization reaction vessel was depressurized from an initial pressure of 760 mmHg at a depressurization rate of 13.8 mmHg / min. After 55 minutes, the pressure was reduced to about 1.5 mmHg, and then the pressure state was maintained until the target polymer viscosity was reached. .
- the temperature of the polymerization reactor was increased at a rate of 0.46 ° C./min, and the polycondensation reaction temperature reached 290 ° C. 2 hours after the start of the polycondensation reaction, and the temperature state was maintained until the end of the polycondensation reaction.
- the polycondensation reaction was terminated, and nitrogen was injected into the polycondensation reaction tank to terminate the depressurization.
- the polycondensation reaction time at that time was 3 hours and 15 minutes. Thereafter, the polymer in the polycondensation reaction tank was discharged in a strand form with nitrogen, cooled, and immediately cut to obtain polyester pellets.
- the resulting polyester composition had a polymer viscosity of 0.66, a b value of 6.3, a 2-methyl-1,3-propanediol content of 8.0 mol%, and a cyclic dimer of 0.37% by weight. there were.
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Abstract
Description
試料をオルソクロロフェノールに溶解し、オストワルト粘度計を用いて25℃で測定した。
色差計(スガ試験機製、SMカラーコンピュータ型式SM-T45)を用いて測定した。ハンター値(b値)として測定した。
試料をモノメタノールアミンで加水分解後、1,6-ヘキサンジオール/メタノールで希釈し、テレフタル酸で中和した後、ガスクロマトグラフィーのピーク面積から求めた。
試料をトリフルオロ酢酸に溶解させ、H-NMR(Bruker社製 AV-600、測定温度 300K、スキャン回数128回)にて測定を行った。7.8~8.0ppm付近のピークが環状ダイマー由来のベンゼン環のプロトンピーク(A)であり、8.0~8.3ppm付近のピークが直鎖状のポリエステル組成物由来のベンゼン環のプロトンピーク(B)である。これらプロトンピークの積分比(A/B)をポリエステル組成物中の環状ダイマー含有量とし、小数点以下3桁目を四捨五入し、以下の基準で判定した。
環状ダイマー含有量が0.35重量%以下:○
環状ダイマー含有量が0.36重量%以上:×
未延伸糸パッケージから糸を1m×10回のかせ取りを行い、かせに0.029cN/dtexの荷重をかけ、かせ長を測定する(L0)。次にかせを無荷重の状態で160℃のオーブンにて15分間熱処理し、風冷後、0.029cN/dtexの荷重をかけたときのかせ長を測定する(L1)。なお測定は3回行い平均値を求め、(式1)にて160℃の乾熱収縮率を算出し、以下の基準で判定した。
乾熱収縮率=(L0-L1)/L0×100 (式1)
L0:熱処理前の繊維長、L1:熱処理後の繊維長
乾熱収縮率が10%未満:○
乾熱収縮率が10%以上:×
未延伸糸パッケージから糸を採取後、速やかに2×10-3cN/dtexの荷重を架け、採取から2分以内に繊維長(L2)を測定し、温度25℃±2℃、相対湿度65%±10%の雰囲気下で200時間放置後の繊維長(L3)を測定する。測定は3回行い、その平均値を求め、(式2)により遅延収縮率を算出した。
遅延収縮率=(L2-L3)/L2×100 (式2)
L2:採取から2分以内の繊維長、L3:200時間経過後の繊維長
遅延収縮率が1.5%未満:○
遅延収縮率が1.5%以上:×
実施例記載の方法により得た加工糸を筒編み地とし、Dianix Black S-Rの5%owf(黒系分散染料)、均染剤1g/L、酢酸1g/Lからなる浴比1:20の95℃熱水溶液中で60分間染色を行い、(2)の方法で色調L値を測定し、以下の基準で判定した。
L値が16.5未満:○
L値が16.5以上:×
実施例記載の方法により得た加工糸を筒編み地とし、JIS L0801の方法にて堅牢度評価を行い、以下の基準で判定した。
4級 :○
3級以下:×
(エステル交換反応)
精留塔を備えた反応槽に、エチレングリコール/テレフタル酸ジメチルのモル比率が2.0となるよう、エチレングリコールとテレフタル酸ジメチルを添加し、2-メチル-1,3-プロパンジオールを得られる低重合体に8.0モル%となるよう添加し、酢酸コバルト・四水和物を得られる低重合体中に400ppm含有するよう添加した。その後、反応槽の温度を140℃から235℃まで昇温させながら、メタノールを留去させエステル交換反応を行い1750kgの低重合体を得た。この時のエステル交換反応率は98%だった。
前記の低重合体が存在するエステル反応槽に、2-メチル-1,3-プロパンジオールを得られるポリエステル組成物中に8.0モル%(9.2モル%の2-メチル-1,3-プロパンジオールを添加し、このうち1.2モル%相当の2-メチル-1,3-プロパンジオールが、重縮合反応中に留去された。この量は添加した2-メチル-1,3-プロパンジオールの15重量%に相当した。)となるよう添加し、エチレングリコール/テレフタル酸のモル比が1.15であるスラリーを約3時間かけ添加した。発生する水を系外に留去しながら反応槽の温度を245℃一定にコントロールしエステル化反応を行った。この反応時間は4時間であり、エステル化反応率は98%だった。
得られたポリエステル組成物を乾燥後、紡糸機に供し、紡糸温度265℃、口金ヒーター270℃、口金面深度(口金面から冷却開始までの距離)35mm、吐出量29.3g/分の溶融ポリエステルを孔径0.30mm、孔深度0.50mmの丸孔を24個有する口金ノズルより吐出させた。吐出後の糸条は冷却チムニーによって35m/分の冷却風で冷却・固化され、口金下1.7mの位置で給油装置にて集束させながら油剤を付与し(純油分として繊維重量に対し0.7重量%)、周速度2750m/分の第1ゴデットロール、および第2ゴデットロールにて引き取り、110dtex、24フィラメントの未延伸糸を12kg巻いたチーズパッケージを得た。なお、巻き取り機の周速度は2745m/分とした。得られた未延伸糸の乾熱収縮率、遅延収縮率を測定するため、上記(5)、上記(6)の方法で評価した。乾熱収縮率は8.6%、遅延収縮率は1.1%であり、繊維構造は安定していた。
得られた未延伸糸を、ディスク仮撚り機を用い、ヒーター温度180℃、延伸速度400m/分、DY比1.55、延伸倍率1.7倍で延伸仮撚り加工を行い、56dtex、24フィラメントの加工糸を得た。ここでDY比は、施撚体の周速度(D)と延伸ローラーの速度(Y)の比D/Yである。
得られた加工糸を用いて筒編み地を作製し、上記(7)、(8)の方法で染色加工および酸化窒素堅牢度評価を実施した。得られた筒編み地のL値は15.3、酸化窒素堅牢度は4級であり、染色性および酸化窒素堅牢度に優れていた。
ポリエステル組成物を重合するとき、側鎖を有する炭素鎖数が3のジオール成分の種類、その含有量、ポリエチレングルコールの種類(数平均分子量)、その含有量を、表1,2に記載の条件に変更する以外は実施例1と同様にしてポリエステル組成物を得た。得られたポリエステル組成物について、実施例1と同じ方法で紡糸・染色し、評価した。いずれのポリエステル組成物も重縮合反応時の圧力が安定しておりポリマ品質に優れていた。また、得られた繊維品質も優れていた。
ポリエステル組成物の重縮合反応条件について、昇温速度、減圧速度を表2に記載の条件に変更した以外は、実施例1と同様にしてポリエステル組成物を得た。得られたポリエステル組成物について、実施例1と同じ方法で紡糸・染色し、評価した。いずれのポリエステル組成物も重縮合反応時の圧力が安定しておりポリマ品質に優れていた。また、得られた繊維品質も優れていた。
(エステル化反応・重縮合反応)
ポリエステル組成物を重合するとき、側鎖を有する炭素鎖数が3のジオール成分の種類、その含有量(2-メチル-1,3-プロパンジオールエチレンオキサイド付加物はエチレングリコールとともに系外に留去されないため、添加した含量そのままがポリマに含有されるため、得られるポリエステル組成物に対し6モル%添加した)、ポリエチレングルコールの種類(数平均分子量)、その含有量を、表2に記載の条件に変更する以外は実施例1と同様にしてポリエステル組成物を得た。得られたポリエステル組成物について、実施例1と同じ方法で紡糸・染色し、評価した。いずれのポリエステル組成物も重縮合反応時の圧力が安定しておりポリマ品質に優れていた。また、得られた繊維品質も優れていた。
ポリエステル組成物を重合するとき、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。分散染料染色性(L値)が劣っていた。
ポリエステル組成物を重合するとき、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。乾熱収縮率、遅延収縮率および分散染料染色性(L値)が劣っていた。
ポリエステル組成物を重合するとき、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。ポリマ中の環状ダイマーが多く、やや重縮合反応が遅延した。乾熱収縮率、遅延収縮率および分散染料染色性(L値)も劣っていた。
ポリエステル組成物を重合するとき、ポリエチレングリコールを添加せず、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。分散染料染色性(L値)が劣っていた。
ポリエステル組成物を重合するとき、ポリエチレングリコールを添加せず、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。ポリマ中の環状ダイマーが多く、一時的に重縮合反応の圧力が上昇し、重縮合反応が大きく遅延したため、ポリマ色調(b値)が劣っていた。乾熱収縮率、遅延収縮率も劣っていた。
ポリエステル組成物を重合するとき、ポリエチレングリコールを添加せず、表3に記載の条件にする以外は実施例16と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。分散染料染色性(L値)に劣っていた。
ポリエステル組成物を重合するとき、2-メチル-1,3-プロパンジオールを添加せず、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。分散染料染色性(L値)に劣っていた。
ポリエステル組成物を重合するとき、2-メチル-1,3-プロパンジオールを添加せず、表3に記載の条件にする以外は実施例1と同じ方法で重合し、得られたポリエステル組成物を紡糸・染色し、評価を行った。乾熱収縮率、遅延収縮率、分散染料染色性(L値)および酸化窒素堅牢度が劣っていた。
(エステル交換反応)
精留塔を備えた反応槽に、エチレングリコール/テレフタル酸ジメチルのモル比率が2.0となるようエチレングリコールとテレフタル酸ジメチルを添加し、酢酸コバルト・四水和物を得られる低重合体中に400ppm含有するよう添加した。その後、反応槽の温度を140℃から235℃まで昇温させながら、メタノールを留去させエステル交換反応を行い1750kgの低重合体を得た。この時のエステル交換反応率は98%だった。
その低重合体が存在するエステル反応槽に、エチレングリコール/テレフタル酸のモル比が1.15であるスラリーを約3時間かけ添加した。発生する水を系外に留去しながら反応槽の温度を245℃一定にコントロールしエステル化反応を行った。この反応時間は4時間であり、エステル化反応率は98%だった。得られた低重合体のうち750kgはエステル反応槽に残したまま、1000kgを重縮合反応槽に移送した。低重合体の移送完了後、リン酸を得られるポリエステル組成物に対しリン換算で50ppmとなるよう添加し、7分後に三酸化アンチモンを得られるポリエステル組成物に対しアンチモン換算で330ppm、酢酸コバルトを得られるポリエステル組成物に対し90ppm、IR1010を得られるポリエステル組成物に対し1000ppmになるよう添加した。さらに5分後、2-メチル-1,3-プロパンジオールを得られるポリエステル組成物に対し8.0モル%(10.8モル%の2-メチル-1,3-プロパンジオールを添加し、このうち2.8モル%相当の2-メチル-1,3-プロパンジオールが留去された。この量は添加した2-メチル-1,3-プロパンジオールの35重量%に相当した。)となるよう添加し、その5分後、数平均分子量1000のポリエチレングリコールを得られるポリエステル組成物に対し3.0重量%となるよう添加し、さらに5分後、酸化チタンを得られるポリエステル組成物に対し0.3重量%となるよう添加した。各添加物の添加が終了した時点の重縮合反応槽の温度は225℃だった。その後、スチームエゼクターを稼働させ重縮合反応槽内部の減圧を開始し、重縮合反応を開始した。760mmHgの初期圧力から、13.8mmHg/分の減圧速度で重合反応槽を減圧し、55分経過後に約1.5mmHgまで減圧し、その後、目標のポリマ粘度に到達するまでその圧力状態を保持した。重合反応槽を0.46℃/分の速度で昇温し、重縮合反応開始から2時間後に重縮合反応温度が290℃に到達し、その温度状態を重縮合反応終了まで保持した。目標とするポリマ粘度に到達した時点で重縮合反応を終了し、重縮合反応槽に窒素を注入し減圧を終了した。その際の重縮合反応時間は3時間15分だった。その後、重縮合反応槽内部にあるポリマを窒素にてストランド状に吐出して冷却後、直ちにカッティングしてポリエステルのペレットを得た。得られたポリエステル組成物のポリマ粘度は0.66、b値は6.3、2-メチル-1,3-プロパンジオールの含有量は8.0モル%、環状ダイマーは0.37重量%であった。重縮合反応中の圧力変動が見られ、重合反応がやや遅延した。その他、紡糸方法、延伸仮撚り方法は実施例1と同様の方法で実施して、得られた繊維の品質は表3に記載の通り、乾熱収縮率、遅延収縮率が劣っていた。
Claims (6)
- ジカルボン酸、ジオールおよびポリエチレングリコールからなる成分を含み、主たる繰り返し成分がエチレンテレフタレートからなるポリエステルを含むポリエステル組成物であって、前記ポリエステルが側鎖を有する炭素鎖数が3のジオール成分を前記ジオール成分の合計に対し5~10モル%含み、前記ポリエステル組成物中、前記ポリエチレングリコールの含有量が2~4重量%、環状ダイマーの含有量が0.35重量%以下である常圧分散可染性ポリエステル組成物。
- 前記側鎖を有する炭素鎖数が3のジオール成分が、2-メチル-1,3-プロパンジオールである請求項1に記載の常圧分散可染性ポリエステル組成物。
- 請求項1から3のいずれか1項に記載の常圧分散可染性ポリエステル組成物からなるポリエステル繊維。
- 請求項4に記載の繊維を少なくとも一部に用いてなる成形体。
- ジカルボン酸またはそのエステル形成性誘導体と、ジオールまたはそのエステル形成性誘導体を重縮合触媒の存在下で重縮合したポリエステルからなるポリエステル組成物を製造する方法において、前記ポリエステルを構成する全ジオール成分に対し、側鎖を有する炭素鎖数が3のジオール成分が5~10モル%となるようにエステル反応開始前に添加し、前記ポリエステル組成物に対し、ポリエチレングリコールの含有量が2~4重量%となるよう添加することを特徴とする、常圧分散可染性ポリエステル組成物の製造方法。
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KR101921388B1 (ko) * | 2016-12-29 | 2018-11-22 | 효성티앤씨 주식회사 | 상압에서 가염이 가능한 폴리에스테르 중합물의 제조방법 및 이에 의해 제조된 폴리에스테르 원사 |
KR200489611Y1 (ko) | 2018-09-18 | 2019-07-11 | 김영훈 | 통풍시트 장치 |
CN109750367B (zh) * | 2018-12-27 | 2020-10-16 | 江苏恒力化纤股份有限公司 | 用于汽车气囊的涤纶工业丝及其制备方法 |
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- 2013-01-25 KR KR1020147012558A patent/KR20140124747A/ko not_active Application Discontinuation
- 2013-01-25 CN CN201380003429.XA patent/CN103874732B/zh active Active
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JP2014080709A (ja) * | 2012-10-18 | 2014-05-08 | Toray Ind Inc | 紡績糸 |
JP2017160569A (ja) * | 2016-03-10 | 2017-09-14 | 東レ株式会社 | 潜在捲縮性易染色ポリエステル複合繊維および不織布 |
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JP2022033806A (ja) * | 2019-05-13 | 2022-03-02 | 東レ尖端素材株式会社 | 熱接着性繊維用ポリエステル組成物、これを通じて具現された熱接着性複合繊維および不織布 |
JP7154400B2 (ja) | 2019-05-13 | 2022-10-17 | 東レ尖端素材株式会社 | 熱接着性繊維用ポリエステル組成物、これを通じて具現された熱接着性複合繊維および不織布 |
JP7301935B2 (ja) | 2019-05-13 | 2023-07-03 | 東レ尖端素材株式会社 | 熱接着性繊維用ポリエステル組成物、これを通じて具現された熱接着性複合繊維および不織布 |
Also Published As
Publication number | Publication date |
---|---|
US20140350212A1 (en) | 2014-11-27 |
CN103874732A (zh) | 2014-06-18 |
TW201339198A (zh) | 2013-10-01 |
KR20140124747A (ko) | 2014-10-27 |
CN103874732B (zh) | 2016-09-07 |
JP5549779B2 (ja) | 2014-07-16 |
EP2810988A1 (en) | 2014-12-10 |
JPWO2013115096A1 (ja) | 2015-05-11 |
EP2810988A4 (en) | 2015-09-02 |
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