WO2012116481A1 - Copolyester modifié, son procédé de préparation et fibre associé - Google Patents

Copolyester modifié, son procédé de préparation et fibre associé Download PDF

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Publication number
WO2012116481A1
WO2012116481A1 PCT/CN2011/071364 CN2011071364W WO2012116481A1 WO 2012116481 A1 WO2012116481 A1 WO 2012116481A1 CN 2011071364 W CN2011071364 W CN 2011071364W WO 2012116481 A1 WO2012116481 A1 WO 2012116481A1
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Prior art keywords
copolyester
propanediol
methyl
sulfonate
sodium
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Ceased
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PCT/CN2011/071364
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English (en)
Chinese (zh)
Inventor
顾利霞
俞建勇
李发学
蔡再生
付昌飞
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Donghua University
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Donghua University
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Priority to PCT/CN2011/071364 priority Critical patent/WO2012116481A1/fr
Publication of WO2012116481A1 publication Critical patent/WO2012116481A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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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
    • C08G63/68—Polyesters containing atoms other than carbon, hydrogen and oxygen
    • C08G63/688—Polyesters containing atoms other than carbon, hydrogen and oxygen containing sulfur
    • C08G63/6884—Polyesters containing atoms other than carbon, hydrogen and oxygen containing sulfur derived from polycarboxylic acids and polyhydroxy compounds
    • C08G63/6886—Dicarboxylic acids and dihydroxy compounds
    • 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
    • C08G63/78—Preparation processes
    • C08G63/80—Solid-state polycondensation
    • 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
    • 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
    • D06P3/522—Polyesters using basic dyes

Definitions

  • the present invention relates to a modified copolyester, in particular to a novel copolymerization of a side chain aliphatic diol blend and an isophthalic acid dibasic acid 5-sodium sulfonate or potassium. ester. Background technique
  • polyester fiber dyeing There are many methods for improving polyester fiber dyeing. It is widely used to add modified monomers for copolymerization. It can be roughly divided into the following three types: (1) Adding cationic dyes to dye monomers, such as sodium (or potassium) benzene sulfonate. (2) adding disperse dye-dyeable monomers, such as isophthalic acid with meta-structure, polyethylene glycol and sebacic acid with flexible structure; (3) adding acid dyes to dye monomers, such as Containing an amine compound.
  • dye monomers such as sodium (or potassium) benzene sulfonate
  • disperse dye-dyeable monomers such as isophthalic acid with meta-structure, polyethylene glycol and sebacic acid with flexible structure
  • acid dyes such as Containing an amine compound.
  • the present invention uses a blend of two aliphatic diols having a side chain as the fourth comonomer, and the isophthalic acid dibasic acid 5-sodium sulfonate or potassium as the third copolymer Body, obtained a new type of modified copolyester, the copolymer fiber has very good cationic dyeability, the dye uptake rate is above 95%, much higher than the copolyester fiber in the prior art .
  • the Applicant has unexpectedly discovered that the fibers of the copolyester have unexpectedly good resilience.
  • the copolyester can also be prepared by continuous polymerization and direct spinning or section spinning. The preparation process has no special requirements on the equipment, low cost and easy realization of industrial production.
  • a first aspect of the invention provides a modified copolyester which is copolymerized from a monomer comprising: (1) terephthalic acid; (2) ethylene glycol;
  • the isophthalic acid dibasic acid 5-sodium sulfonate or potassium is preferably selected from the group consisting of: ethylene isophthalate-sodium 5-sulfonate, ethylene isophthalate 5-sulfonic acid Potassium, propylene glycol isophthalate-sodium 5-sulfonate, propylene glycol isophthalate-potassium 5-sulfonate, butylene glycol isophthalate-sodium 5-sulfonate, or isophthalic acid Alcohol ester 5-sodium sulfonate.
  • the molar content of the sodium or potassium monomer unit of isophthalic acid dibasic acid-5-sulfonate preferably accounts for 1.5 mol% of the molar amount of the terephthalic acid monomer unit. 7 mol%.
  • the sum of the molar contents of the monomer units of 2-methyl-1,3-propanediol and 2,2-dimethyl-1,3-propanediol preferably accounts for p-phenylene
  • the molar amount of the formic acid monomer unit is from 4 mol% to 20 mol%.
  • the divalent or trivalent metal compound catalyst added during copolymerization is: one or more of metal Zn, Sb, Mn, Ca or Co compounds, the content of which is p-terephthalic acid
  • the amount of the formic acid monomer is from 0.01% by weight to 0.08% by weight.
  • trimethyl phosphate or triphenyl phosphate as a heat stabilizer in an amount of from 0.02% by weight to 0.06% by weight based on the amount of the terephthalic acid monomer.
  • a second aspect of the invention relates to a process for the preparation of the copolyester of the invention, which comprises: synthesizing a copolyester on a continuous polymerization apparatus: esterification of ethylene glycol and terephthalic acid to a first esterification tank , the reaction temperature is 240 ° C ⁇ 270 ° C, time 2-4 hours; then, into the second esterification tank, while injecting 2-methyl-1,3-propanediol and 2,2-dimethyl-1,3 - a blend of propylene glycol, and an isophthalic acid dibasic acid 5-sodium sulfonate or potassium, further esterified, the reaction temperature is 240 ° C ⁇ 270 ° C, time 1-3 hours; then, into the polycondensation kettle , the reaction temperature is 270 ° C -300 ° C, time 2-4 hours, after the end of the reaction, discharging, dicing, drying to obtain the copolyester; wherein
  • the intrinsic viscosity of the copolyester obtained by this method is preferably from 0.4 to 0.7, and the melting point is preferably from 200 ° C to 240 ° C as measured by a capillary viscosity method.
  • a third aspect of the invention relates to a fiber of the above copolyester which is obtained by such a method:
  • the copolyester obtained by the above method is subjected to slicing or direct spinning, wherein the spinning screw temperature in the spinning process is 270 ° C ⁇ 320 ° C, the spinning speed is 400 ⁇ 4200 m / min, the drawing temperature is 70 ° C ⁇ 160°C, the draw ratio is 1 ⁇ 4 times.
  • the copolyester fiber can be dyed dark with a cationic dye at a pressure of 95 to 100 ° C under normal pressure boiling conditions.
  • the dyeing rate is above 95%.
  • the copolyester fiber is instantaneously stretched back at 25 ° C, a pretension of 0.5 cN/dtex, a tensile rate of 500 mm/min, and a constant elongation of 15%.
  • the bomb rate is above 75%.
  • the fiber of the modified copolyester of the present invention can be dyed into a dark color by a cationic dye under normal pressure boiling conditions, and the dye uptake rate is over 95%. It is also bright in color and has a wide range of chromatograms. At the same time, the copolyester fiber has a very good resilience and a soft hand.
  • the invention adopts two kinds of aliphatic diol mixtures with side chains and isophthalic acid dibasic acid 5-sodium sulfonate or potassium to obtain a novel modified copolyester, the two kinds of belt sides
  • the chain aliphatic diols are: 2-methyl-1,3-propanediol and 2,2-dimethyl-1,3-propanediol.
  • the molar content of the isophthalic acid diester-5-sulfonic acid sodium or potassium monomer unit is 1.5 mol% to 7 mol% relative to the molar content of the terephthalic acid unit. It is preferably 1.5 mol% to 6 mol%. More preferably, it is 2 mol% to 5 mol%, more preferably 3 mol% to 4 mol%.
  • the isophthalic acid dibasic acid 5-sodium sulfonate or potassium is preferably selected from the group consisting of: ethylene isophthalate-sodium 5-sulfonate, ethylene isophthalate 5-sulfonic acid Potassium, propylene glycol isophthalate-sodium 5-sulfonate, propylene glycol isophthalate-potassium 5-sulfonate, butylene glycol isophthalate-sodium 5-sulfonate, or isophthalic acid Alcohol ester 5-sodium sulfonate.
  • the molar content of the aliphatic diol blend having a side chain is from 4 mol% to 20 mol%, preferably from 5 mol% to 20 mol, per mol of the terephthalic acid unit. More preferably, it is 5 mol% to 15 mol%, more preferably 5 mol% to 10 mol%.
  • the molar ratio of 2-methyl-1,3-propanediol to 2,2-dimethyl-1,3-propanediol monomer is 10: 90 to 90: 10.
  • the copolyester is added with one or more of the metal-containing Zn, Sb, Mn, Ca or Co compounds as a catalyst, and the content thereof is a conventional amount in the industry.
  • the amount of terephthalic acid monomer is 0.01% ⁇ 0.08% (% by weight);
  • the copolymerization and spinning steps are preferably carried out sequentially on a large continuous polymerization-spinning apparatus.
  • the large-scale continuous polymerization-spinning apparatus preferably includes: a first esterification tank, a second esterification tank, a polycondensation tank, and a spinning device. It is also possible to carry out the polymerization on a batch polymerization apparatus, and then slice-spin to form fibers.
  • the novel copolymerization of the two side chain-linked aliphatic diol blends and the isophthalic acid dibasic acid 5-sodium sulfonate or potassium modified by the present invention comprises the following steps:
  • the first esterification tank is esterified with ethylene glycol and terephthalic acid, the reaction temperature is 240 ° C ⁇ 270 ° C, time 2 ⁇ 4h; then, enter the second ester
  • the autoclave is simultaneously injected with an aliphatic diol blend containing a side chain and an isophthalic acid dibasic ester 5-sodium sulfonate or potassium, further esterified, and the reaction temperature is 240 ° C to 270 ° C, time l ⁇ 3h; Subsequently, entering the polycondensation kettle, the reaction temperature is 270 ° C ⁇ 300 V, time 2 ⁇ 4h, that is, a new copolyester melt; wherein terephthalic acid, ethylene glycol, aliphatic with side chains The molar ratio of the diol blend and the isophthalic acid dibasic acid 5-sodium sulfonate
  • Synthesis of side chain aliphatic diol blends and isophthalic acid diester-sodium 5-sulfonate-modified new copolyesters on large continuous polymerization equipment must be optimized according to the above method Composition, feeding method, strict control of esterification, polycondensation temperature and time, to solve the above key technologies, in order to ensure a good spinnability copolyester.
  • the divalent or trivalent metal compound catalyst used in the polymerization is a conventional catalyst in the industry, and preferably one or more of metal Zn, Sb, Mn, Ca or Co compounds.
  • the side chain aliphatic diol blend and the meta-benzene binary synthesized on a large continuous polymerization apparatus The acid diester 5-sodium sulfonate or potassium modified copolyester melt can be directly spun to form short fibers or filaments.
  • the screw temperature is 270 320 ° C, and the spinning speed is 400. ⁇ 4200m/min, the drawing temperature is 70 160 V, and the draw ratio is 1 to 4 times.
  • a modified novel copolyester staple fiber or POY, FDY filament is obtained, and the enthalpy is added to obtain a stretched yarn DTY.
  • the copolyester obtained by polymerization can also be sliced, and then staple fibers or filaments are spun from the chips.
  • copolyester of the present invention can also be carried out on a batch polymerization apparatus by a batch process. Then slice and spin.
  • novel copolyesters provided by the present invention introduce a m-besylate group in their macromolecular chain while introducing a pendant methyl group. Due to the volume effect of the side chain methyl group, the crystallization performance and glass transition temperature of the copolyester are reduced, so that the copolyester staple fiber can be dyed dark for cationic dye under normal pressure boiling conditions without alkali treatment. , bright color, wide spectrum.
  • the present invention employs a specific mixture of 2-methyl-1,3-propanediol monomer and 2,2-dimethyl-1,3-propanediol monomer as the fourth comonomer to obtain a monomethyl group.
  • Applicants have unexpectedly discovered that the cationic dye of this copolyester fiber has a dyeability at atmospheric pressure for boiling, compared to 2-methyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol alone.
  • the copolyester fiber has a better improvement at the same fourth monomer usage.
  • the copolyester fiber is in the same manner as the copolyester fiber using only 2-methyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol. Under the four monomer dosage, the resilience is greatly improved.
  • the unexpectedly good performance of the copolyester fibers of the present invention may result from the particular fourth monomer employed (2-methyl-1,3-propanediol and 2,2-dimethylidene). Structural changes in the macromolecular backbone caused by a mixture of pyridine-1,3-propanediol.
  • the monomethyl side chain and the dimethyl side chain are simultaneously randomly introduced into the macromolecular chain of the copolyester, resulting in a polymer chain that is larger than the introduction of only the monomethyl side chain or only the dimethyl side chain. Regularity, the average length of the crystallizable PET in the molecular chain is reduced, and the PET segment in the copolyester is hindered and tightly packed into the crystal lattice.
  • the crystallinity of the polymer is low, the grain size is small, and the molecular structure Loose, ensuring that the cationic dye molecules in the dyeing process are easily diffused into the interior of the fiber and combined with the dye holder, thereby achieving the use of 2-methyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol.
  • the copolyester of the fourth comonomer has a higher dye uptake rate.
  • a unit of -CH 2 -C(CH 3 ) 2 -CH 2 - is present in the polymer chain, and the bis-methyl side chain is symmetrically distributed in the main chain compared to the -CH 2 -CHCH 3 -CH 2 - unit
  • the electron-donating effects of the two methyl groups on the quaternary carbon atom cancel each other out, showing a freely rotatable helical conformation, and the flexibility of the molecular chain increases.
  • the presence of a monomethyl side chain exacerbates the irregularity of the macromolecular chain and contributes to further enhancement of flexibility.
  • the macromolecular chains in the amorphous region are arranged in the axial direction of the fiber during the tensile deformation.
  • the difficulty is increased, the stress-induced crystallization during stretching is effectively suppressed, and irreversible structural changes are not formed, which contributes to the improvement of the tensile resilience of the copolyester fiber at high elongation.
  • the copolyester fiber of the present invention can be dyed into a dark color under normal pressure boiling conditions with a cationic dye at a pressure of 95 to 100 ° C, and the dyeing rate thereof is 95% or more.
  • the copolyester fiber of the present invention has a transient tensile resilience of more than 75% at 25 ° C, a pretension of 0.5 cN/dtex, a tensile rate of 500 mm/min and a constant elongation of 15%.
  • the fiber has high resilience, good bulkiness, and can be used as a wool-like fiber, and the resulting fabric is stiff and not easy to wrinkle.
  • the copolyester fiber has a small crystal grain, a low crystallinity, a very soft fiber, and can be purely spun or blended or woven with natural fibers or synthetic fibers to impart a thin, soft, smooth and smooth property to a thin fabric. Gives thick fabrics a super soft, ultra-loose style with excellent pilling resistance.
  • the dyeability and resiliency of the cationic atmospheric pressure boiling of the copolyester fibers of the present invention and using only 2-methyl-1,3-propanediol or 2,2-dimethyl-1,3-propanediol as the first Compared to the copolyester fibers of the four comonomers, there is a better improvement at the same fourth monomer usage. It can also be said that the present invention employs a mixture of 2-methyl-1,3-propanediol and 2,2-dimethyl-1,3-propanediol as a fourth comonomer having a synergistic effect.
  • the copolyester fiber modified by the side chain-containing aliphatic diol blend and the isophthalic acid dibasic ester 5-sodium sulfonate sodium or potassium according to the present invention has no special requirements on the equipment during the manufacturing process. It can be produced on imported or domestically produced ordinary equipment, and the cost is low, and it is easy to realize industrial production.
  • PTA Terephthalic acid
  • Ethylene glycol EG
  • the fourth comonomer was named 2,2-dimethyl-1,3-propanediol, and the copolyester obtained by the same method as the present invention was named Pest 2, abbreviated as PARSTER2.
  • the first esterification tank was charged with 1 ton of PTA, 600 kg of EG, and 0.2 kg of catalyst antimony trioxide and 0.2 kg of triphenyl phosphate were added for esterification reaction at a reaction temperature of 260 V. After 3 h, the material was transferred to a second esterification kettle while injecting a mixture of MPO and NPG equivalent to 10 mol% of the PTA (the molar ratio of MPO to NPG in the blend was 90:10) and 1.5 equivalent to PTA.
  • the modified copolyester slice SULET1 is obtained by granules and drying.
  • the SULET1 slice has an intrinsic viscosity of 0.650 and a melting point of 238 °C.
  • the first esterification tank was charged with 1 ton of PTA, 410 kg of EG, and 0.32 kg of catalyst antimony trioxide and 0.6 kg of triphenyl phosphate were added for esterification reaction at a reaction temperature of 260 V. After 3 h, the material was transferred to a second esterification kettle while injecting a mixture of MPO and NPG equivalent to 20 mol% of PTA (the molar ratio of MPO to NPG in the blend was 50:50) and 2 mol equivalent to PTA.
  • the modified copolyester slice SULET2 is dried.
  • the SULET2 slice has an intrinsic viscosity of 0.620 and a melting point of 23 C.
  • the first esterification tank was charged with 1 ton of PTA, 450 kg of EG, and 0.1 kg of catalyst antimony trioxide and 0.2 kg of triphenyl phosphate were added for esterification reaction at a reaction temperature of 260 V. After 3 h, the material was transferred to a second esterification kettle while injecting a 15 mol% molar amount of a mixture of MPO and NPG equivalent to PTA (the molar ratio of MPO to NPG in the blend was 10:90) and equivalent to PTA.
  • the modified copolyester slice SULET3 is obtained by pelletizing and drying.
  • the SULET3 slice has an intrinsic viscosity of 0.652 and a melting point of 236 °C.
  • the first esterification kettle was charged with 1 ton of PTA, 800 kg of EG, and 0.2 kg of catalyst antimony trioxide and 0.4 kg of triphenyl phosphate were added for esterification reaction at a reaction temperature of 260 V. After 3 h, the material was transferred to a second esterification kettle while injecting a mixture of MPO and NPG equivalent to 10 mol% of the PTA (the molar ratio of MPO to NPG in the blend was 75:25) and 2.5 equivalent to PTA.
  • the secondary drawing temperature was 80 ° C
  • the relaxation temperature of each zone was 80 ° C / 80 ° C / 75 ° C / 75 ° C
  • the fineness was 3.24 dt
  • the breaking strength was 3.18 cN / dt
  • the elongation was 30.77. , 180 ° C dry heat shrinkage 24%.
  • the dyed fiber is 95-100 ° C, the dyeing rate of cationic pink X-FG dye is 97.5%; the pre-tension of 0.5 cN / dtex at 25 ° C, the tensile rate of 500 mm / min and 15% Under the condition of elongation, its instantaneous tensile rebound rate is 78%.
  • the dyeing rate of PARSTER1 fiber prepared under the same conditions was 91.7%, and the instantaneous tensile rebound rate was
  • PARSTER2 fiber has a dyeing rate of 90.5% and a transient tensile rebound rate of 69%.
  • the first esterification tank was charged with 1 ton of PTA, 410 kg of EG, and 0.8 kg of catalyst antimony trioxide and 0.3 kg of triphenyl phosphate were added for esterification reaction at a reaction temperature of 265 V. After 3 h, the material was transferred to a second esterification kettle while injecting a mixture of MPO and NPG equivalent to 4 mol% of PTA (the molar ratio of MPO to NPG in the mixture was 25:75) and 6 mol% equivalent to PTA.
  • Directly spun hollow short fibers 2.78detxX 64mm, winding speed 1100m/min, pre-stretched 1.007, first draw ratio 2.95, second draw ratio 1.14, draw speed 128m/min, stretch bath 65°C,
  • the second drawing temperature was 80 ° C
  • the relaxation temperature of each zone was 80 ° C / 80 ° C / 75 ° C / 75 ° C
  • the fineness was 2.77 dt
  • the breaking strength was 3.3 cN / dt
  • the elongation was 32.67. , 180 ° C dry heat shrinkage 20%, hollowness 17.66.
  • the dyed fiber was 95-100 ° C, and the dyeing rate of cationic brilliant purple X-5BLH dye was 99.2%;
  • the dyeing rate of PARSTER1 fiber prepared under the same conditions was 92.3%, and the instantaneous tensile rebound rate was 71%; the SARSTER2 fiber dyeing rate was 91.5%, and the instantaneous tensile rebound rate was 72%.
  • the dyed fiber is 95-100 ° C, the dyeing rate of cationic yellow 7GL dye is 99.8%; the pre-tension of 0.5cN/dtex at 25 ° C, the tensile rate of 500mm / min and the elongation of 15% Under the condition, its instantaneous tensile rebound rate is 77%.
  • the spunbonded fiber had an instantaneous tensile rebound rate of 83% at 25 ° C, a pretension of 0.5 cN/dtex, a tensile rate of 500 mm/min and a tensile elongation of 15%.
  • the dyed fiber is 95-100 ° C, the cationic yellow X-8GL dye has a dyeing rate of 95.8%; at 25 ° C, 0.5 cN/dtex pre-tension, 500 mm/min tensile rate and 15% Under the condition of elongation, its instantaneous tensile rebound rate is 80%.
  • the dyeing rate of PARSTER1/PA6 fiber prepared under the same conditions was 91.3%, the instantaneous tensile rebound rate was 58%; the SARSTER2/PA6 fiber dyeing rate was 90.1%, and the instantaneous tensile rebound rate was 62%.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Health & Medical Sciences (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Organic Chemistry (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • General Chemical & Material Sciences (AREA)
  • Artificial Filaments (AREA)
  • Polyesters Or Polycarbonates (AREA)

Abstract

Selon l'invention un type de copolyester modifié est copolymérisé avec des monomères contenant de l'acide téréphtalique, de l'éthylèneglycol, du (diester de l'acide isophtalique)-5-sulfonate de sodium ou du (diester de l'acide isophtalique)-5-sulfonate de potassium et le mélange de 2-méthylpropane-1,3-diol et de 2,2-diméthylpropane-1,3-diol. Le rapport molaire du 2-méthylpropane-1,3-diol au 2,2-diméthylpropane-1,3-diol dans le mélange est de 10:90-90:10. La fibre du copolyester peut être teinte en une couleur foncée par un procédé de teinture à l'ébullition utilisant un colorant cationique sous pression atmosphérique et le pourcentage d'épuisement est supérieur à 95 %. En outre, la fibre de copolyester a une excellente résilience. Le procédé de fabrication de la fibre de copolyester n'a pas d'exigence spéciale concernant des dispositifs et le coût est faible, ainsi la fabrication est applicable à une production industrielle.
PCT/CN2011/071364 2011-02-28 2011-02-28 Copolyester modifié, son procédé de préparation et fibre associé Ceased WO2012116481A1 (fr)

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US20230279178A1 (en) * 2020-07-20 2023-09-07 Toray Advanced Materials Korea Inc. Copolyester resin for binder fiber, method for preparing same, and binder fiber comprising same

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US20090163402A1 (en) * 2007-12-19 2009-06-25 Eastman Chemical Company Fabric softener
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CN106835437A (zh) * 2016-12-15 2017-06-13 中国纺织科学研究院 一种芳香族聚酯‑脂肪族聚酯嵌段共聚酯纤维与蛋白质纤维的织物
US20230279178A1 (en) * 2020-07-20 2023-09-07 Toray Advanced Materials Korea Inc. Copolyester resin for binder fiber, method for preparing same, and binder fiber comprising same

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