WO2007052825A1 - ドープおよび該ドープを用いた繊維の製造方法 - Google Patents
ドープおよび該ドープを用いた繊維の製造方法 Download PDFInfo
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- WO2007052825A1 WO2007052825A1 PCT/JP2006/322317 JP2006322317W WO2007052825A1 WO 2007052825 A1 WO2007052825 A1 WO 2007052825A1 JP 2006322317 W JP2006322317 W JP 2006322317W WO 2007052825 A1 WO2007052825 A1 WO 2007052825A1
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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
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids
- C08G69/32—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic acids from aromatic diamines and aromatic dicarboxylic acids with both amino and carboxylic groups aromatically bound
-
- 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
- C08G69/00—Macromolecular compounds obtained by reactions forming a carboxylic amide link in the main chain of the macromolecule
- C08G69/02—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids
- C08G69/26—Polyamides derived from amino-carboxylic acids or from polyamines and polycarboxylic acids derived from polyamines and polycarboxylic 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
- C08G73/00—Macromolecular compounds obtained by reactions forming a linkage containing nitrogen with or without oxygen or carbon in the main chain of the macromolecule, not provided for in groups C08G12/00 - C08G71/00
- C08G73/06—Polycondensates having nitrogen-containing heterocyclic rings in the main chain of the macromolecule
- C08G73/22—Polybenzoxazoles
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J3/00—Processes of treating or compounding macromolecular substances
- C08J3/02—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques
- C08J3/03—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media
- C08J3/05—Making solutions, dispersions, lattices or gels by other methods than by solution, emulsion or suspension polymerisation techniques in aqueous media from solid polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L77/00—Compositions of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Compositions of derivatives of such polymers
- C08L77/10—Polyamides derived from aromatically bound amino and carboxyl groups of amino-carboxylic acids or of polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L79/00—Compositions of macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing nitrogen with or without oxygen or carbon only, not provided for in groups C08L61/00 - C08L77/00
- C08L79/04—Polycondensates having nitrogen-containing heterocyclic rings in the main chain; Polyhydrazides; Polyamide acids or similar polyimide precursors
- C08L79/08—Polyimides; Polyester-imides; Polyamide-imides; Polyamide acids or similar polyimide precursors
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- 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
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
-
- 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
- D01F6/60—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides
- D01F6/605—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polyamides from aromatic polyamides
-
- 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
- D01F6/74—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from polycondensates of cyclic compounds, e.g. polyimides, polybenzimidazoles
-
- 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
- D01F6/80—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides
- D01F6/805—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from copolycondensation products from copolyamides from aromatic copolyamides
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2377/00—Characterised by the use of polyamides obtained by reactions forming a carboxylic amide link in the main chain; Derivatives of such polymers
- C08J2377/06—Polyamides derived from polyamines and polycarboxylic acids
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
Definitions
- the present invention relates to a dope useful for producing a molded product of polyoxazole having excellent heat resistance and mechanical properties, and a method for producing a fiber using the dope.
- Background Art-Polyparaphenylene terephthalamide represented by Twaron, K ev 1 ar (hereinafter sometimes referred to as PPTA), Polyparaphenylene dilenbenzobisoxazole represented by Z y 1 on (hereinafter referred to as PPTA) PBO) is known to be useful as a raw material for fibers and other molded products with excellent heat resistance and mechanical properties.
- Patent Document 1 describes the production of a copolymer of benzobisoxazole and pyridine benzobisoxazole.
- Patent Document 2 describes that an aqueous solution of an alkali metal salt of an aromatic polyamide having a biphenylhydroxy group as a substituent is extruded into a coagulation liquid, and then stretched to obtain a film or fiber. .
- Patent Document 1 W0 8 5 0 4 1 7 8 pamphlet
- Patent Document 2 GB 1 1 4 2 0 7 1 Disclosure of Invention
- the present inventor has found that an optically anisotropic dope can be obtained when a high molecular weight aromatic polyamide having a hydroxyl group is contained in a basic solvent at a high concentration.
- the present inventors completed the present invention by discovering that the optically anisotropic dope is wet-spun and heat-treated to obtain a highly oriented polyoxazole fiber having excellent mechanical properties such as strength and elasticity.
- the present inventors have found that fibers having excellent mechanical properties can be obtained by spinning a dope, drawing and coagulating in a coagulating liquid, compared with the case of drawing after coagulation.
- the present invention also provides the following formula (I)
- a fiber comprising polyoxazole containing at least one repeating unit selected from the group consisting of: .
- the dope of the present invention contains a polyamide and a basic solvent, and the polyamide concentration is
- optical anisotropy is exhibited at 50 when it exceeds 10% by weight and not more than 30% by weight.
- Polyamide has the following formula (I)
- Polyamide is composed of 50 to 100 mol% of the repeating unit represented by the formula (I) and 50 to 0 mol% of the following formula (II). It is preferable that the repeating unit represented by these is included.
- the polyamide preferably contains 80 to 100 mol% of repeating units represented by the formula (I) and 20 to 0 mol% of repeating units represented by the formula (II).
- the polyamide preferably contains 90 to 100 mol% of the repeating unit represented by the formula (I) and 10 to 0 mol% of the repeating unit represented by the formula (II).
- the polyamide preferably contains 95 to 100 mol% of the repeating unit represented by the formula (I) and 5 to 0 mol% of the repeating unit represented by the formula (II). .
- the specific viscosity (W inh ) of the polyamide is preferably 1 or more, more preferably 1.5 to 50, and still more preferably 3 to 10.
- the specific viscosity is the value measured at 30 in a solution of 0.5 g of the polyamide in 95% by weight of concentrated sulfur 1d1.
- the solvent is a basic solvent.
- basic solvents include sodium hydroxide, potassium hydroxide, calcium hydroxide, and lithium hydroxide.
- aqueous hydroxide solutions of alkali metals and alkaline earth metals can be mentioned. These may be used alone or in combination.
- the basic solvent is preferably sodium hydroxide or potassium hydroxide.
- the pH of the dope is preferably 7 or more, more preferably 10 to: 14.
- the dope of the present invention is characterized by exhibiting optical anisotropy at 50.
- the optical anisotropy is a state where optical anisotropy is observed under crossed Nicols with a microscope, for example, with a dope sandwiched between two glass plates.
- the polyamide is dissolved at a high concentration.
- the concentration of polyamide in the dope is more than 10% by weight and not more than 30% by weight, preferably 12 to 30% by weight, more preferably 15 to 30% by weight, and particularly preferably 15 to 25% by weight.
- the dope of the present invention comprises: (a) an aromatic dicarboxylic acid compound; and (b) an aromatic diamine that is subjected to solution polymerization, and the polyamide is isolated from the solution. It can be prepared by dissolving in
- aromatic dicarboxylic acid compound examples include compounds represented by the following formula (A).
- X is a group represented by ⁇ H, a halogen atom, or OR, and R represents a monovalent aromatic group having 6 to 20 carbon atoms.
- Aromatic groups include aryl groups such as phenyl groups.
- dicarboxylic acids other than those represented by the above formula (A) can be further copolymerized. Specific examples include isofuric acid chloride and 2,6-naphthalenedicarboxylic acid chloride.
- Aromatic diamine used in the present invention includes the following formula (B) '
- Aromatic diamine (3,3'-dihydroxybenzidine) represented by the following formula (C)
- aromatic diamine represented by the formula (1,4-diamino-2,5-dihydroxybenzen), or the hydrochloride, sulfate, and phosphate thereof.
- diamine In order to improve the properties of the resulting polyamide, the following diamine can be copolymerized.
- diamine include P-phenylenamine, m-phene direnamine, 1,4-diaminonaphthalene, 1,5-diaminonaphthalene, 1,8-diaminonaphthalene, 2,6-diaminonaphthalene, 2 , 7-Diaminonaphthalene, 2, 5-Diaminopyridine, 2, 6-Diaminopyridine, 3, 5— Diaminopyridine, 3, 3, -diaminobiphenyl, 3, 3 '— Dicyclodiphenyl, 3, 3' — Diaminodiphenyl ether, 3, 4 '— Diaminodiphenyl ether, 4, 4'-diaminodiphenyl Examples include ether. Of these, p-phenylenediamine is preferred.
- the solvent used for the polymerization is not particularly limited, but dissolves the raw material monomers (A;), (B), (C) as described above, and is substantially nonreactive with them, preferably Any solvent can be used as long as it can obtain a polyamide having a specific viscosity of at least 1.0 or more, more preferably 1.2 or more.
- N, N, ⁇ ', N'-tetramethylurea (TMU), N, N-dimethylacetamine' (DMAC), N, N-jetylacetamide (DEAC), N, N-dimethylamine Lopionamide (DMPR), N, N-dimethylbutyramide (NMBA), N, N-dimethylisobutylamide (NMIB), N-methyl-2-pyrrolidinone (NMP), N-cyclohexyl-1-pyrrolidinone (NCP), N-ethylpyrrolidone 1 (NEP), N-methylcaprolactam (NMC), N, N-dimethylmethoxyacetamide, N-acetylpyrrolidine (NARP), N-acetylbiperidine, N-methylbiperidone 1 2 (NMPD), N, ⁇ '-dimethylethyleneurea, ⁇ , ⁇ '-dimethylpropyleneurea, ⁇ , ⁇ , ⁇ ', N'
- an appropriate amount of a known inorganic salt may be added before, during or at the end of polymerization.
- examples of such inorganic salts include lithium chloride and calcium chloride.
- the polyamide is produced in the same manner as in the usual solution polymerization method of polyamide in the above-mentioned solvent obtained by dehydrating the monomers (A), (B), and (C).
- the reaction temperature at this time is 80 or less, preferably 60 or less.
- the concentration at this time is the monomer concentration and Therefore, about 1 to 20% by weight is preferable.
- trialkylsilyl chloride can also be used for the purpose of increasing the degree of polymerization of polyamide.
- aliphatic and aromatic amines and quaternary ammonium salts can be used in combination to trap acids such as hydrogen chloride.
- the obtained polyamide does not dissolve in the polymerization solvent at a high concentration (generally, several percent by weight is the upper limit of the concentration), after polymerization, After the polyamide is isolated, it is dissolved in a basic solvent. ⁇ Fiber manufacturing method>
- the present invention includes a method of producing a fiber made of polyoxazole by spinning the dope, drawing and coagulating in a coagulation liquid, and heat-treating the obtained fiber at 200 to 900. To do.
- the dope is extruded through a spinneret to form a fiber.
- the spinneret is preferably a corrosion-resistant one made of gold, platinum, palladium, rhodium, or an alloy thereof.
- the spun fiber is stretched before it is solidified in the coagulation liquid. Stretching is preferably performed at the air gap.
- the air gap is a space provided between the spinneret and the coagulation liquid.
- the shear force in the pores orients the liquid crystal domain in the flow direction.
- the orientation of the liquid crystal domain is disturbed by the viscoelastic properties of the dope. This is because the turbulence can be recovered by performing stretching at the air gap.
- the disorder of orientation can be easily recovered by stretching the fiber and making it thin by tension.
- the draw ratio is preferably 1.5 to 300, more preferably 2 to 100, and still more preferably 3 to 30.
- the draw ratio depends on the dope discharge speed and solidification from the die. It is calculated from the ratio of the yarn winding speed.
- the fibers that have been thinned by stretching coagulate in the coagulation liquid while maintaining a highly oriented molecular structure As a result, highly crystalline and highly oriented fibers can be obtained.
- the coagulation liquid is preferably an aqueous solution of sulfuric acid or hydrochloric acid, an aqueous solution of ammonium chloride, or acetone.
- the temperature of the coagulation liquid is preferably 30 to 15 Ot :, more preferably 0 to 100 ° C., and further 5 to 50.
- washing, neutralization, washing and drying are preferably performed.
- the obtained fiber is heat-treated at 200 to 900 ° C.
- the heat treatment temperature is preferably 250 to 700, more preferably 300 to 550.
- the heat treatment can be performed in air, under an inert atmosphere such as nitrogen or argon.
- Heat treatment causes substitution of A r 1 in formula (I) —the cyclization reaction occurs between the H group and the amide bond, and the formula (I 1 a), formula (I 1 b) or formula A polyoxazole having repeating units (I a) and (Ib) is obtained. Furthermore, it is preferable to perform the heat treatment under tension.
- the tension applied during the heat treatment is preferably 0.1 to 8.0%, more preferably 1 to 30% of the breaking strength of the fiber before the heat treatment.
- the heat treatment time is preferably 0.01 to 1,800 seconds, more preferably 0.1 to 600 seconds, and further preferably 1 to 300 seconds.
- the fibers obtained by the method of the present invention have the following formulas (I 1 a) and (I 1 b)
- a polyoxazole containing at least one repeating unit selected from the group consisting of The polyoxazol is 50 to 100 mol% of at least one repeating unit selected from the group consisting of formulas (I a) and (Ib), and 50 to 0 mol% of the following formula (II)
- repeating unit represented by these is included.
- polyoxazole is composed of at least one repeating unit selected from the group consisting of 80 to 100 mol% of the formula (I-3) and (1b), and 2 to 0 mol% of the formula (II It is preferable to include a repeating unit of The polyoxazol is composed of 90 to 100 mol% of at least one repeating unit selected from the group consisting of formulas (I 1 a) and (I 1 b), and 10 to 0 mol% of formula (II). It is preferable to include a return unit.
- the polyoxazol is composed of 95-100 mol% of at least one repeating unit selected from the group consisting of formulas (I 1 a) and (I 1 b), and 5 to 0 mol% of formula (II) It is preferable to include a repeating unit. (Physical properties of fibers)
- the specific viscosity (7? Inh ) of the polyazole constituting the fiber obtained by the present invention is preferably 1.5 to 100, more preferably 2.0 to 50, and still more preferably 3.0 to 40.
- the specific viscosity ( inh ) is the value measured at 30 at a polymer concentration of 0.OS gZl O 2 OmL using methanesulfonic acid.
- the content of phosphorus atoms in the fiber obtained in the present invention is preferably 30 ppm or less, more preferably 0 to 20 ppm, and still more preferably 0 to I 0 ppm.
- the elastic modulus of the fiber obtained in the present invention is 1 OGpa or more, preferably 30 to 500 Gpa, more preferably 70 to 350 Gpa.
- the fineness of the fiber obtained in the present invention is preferably 0.01 to 100 dtex, more preferably 0.1 to 10 dtex, and further 0.5 to 5 dtex.
- the strength of the fiber obtained in the present invention is preferably 100 to: I 0, OO OmNZtex, more preferably 300 to 5,000 OmN / tex, and further preferably 500 to 4,000 OmNZ te X.
- the breaking elongation of the fiber obtained in the present invention is preferably 0.5 :! to 30%, more preferably 0.5 to 10%, and still more preferably 1.0 to 8%.
- the fiber made of polyoxazole obtained by the present invention has the following formula ( ⁇ )
- (X is the azimuth angle in X-ray diffraction measurement
- I is the X-ray diffraction intensity
- the orientation factor F obtained by is preferably 0.3 or more.
- the orientation factor F is more preferably 0. 5 or more, more preferably 0.8 or more. The higher the value of the orientation coefficient F, the better the fiber having a higher elastic modulus, and the theoretical upper limit of the orientation coefficient F when fully oriented is 1.0. Examples
- the specific viscosity of the polyamide was measured at 30 with a polymer concentration of 0.5 g Zd 1 using 95% by weight concentrated sulfuric acid. Polyazole specific viscosity was measured at 30 at a polymer concentration of 0.03 gZl 00 mL using methanesulfonic acid.
- a single fiber was pulled with a Tensilon universal testing machine 1225A manufactured by Orientec Co., Ltd.
- the tensile measurement was performed at a tension speed of 1 OmmZmin.
- the sample was placed in a wet decomposition vessel with reflux cooling, and after adding concentrated sulfuric acid, the organic matter was completely decomposed by adding nitric acid gradually so that the sample did not scatter while heating. After standing to cool, pure water was added and the volume was measured in a white transparent glass container, and phosphorus atoms were quantified by ICP emission spectrometry. (4) X-ray diffraction measurement
- the X-ray generator (RU-B type, manufactured by Rigaku Corporation) was measured under the conditions of target CuKa line, voltage 45 kV, and current 70 mA. Incident X-rays were condensed and monochromated by an Osmic multilayer mirror and the cross section of the sample was measured by the vertical transmission method. The diffraction X-ray was detected using an imaging plate (manufactured by Fuji Photo Film) with a size of 20 Omm x 250 mm and a camera length of 25 Omm.
- an imaging plate manufactured by Fuji Photo Film
- polyamide After completion of the reaction, it was poured into a large amount of ion exchange water to precipitate polyamide.
- the obtained polyamide was separated by filtration, further washed with ethanol and acetone, and then vacuum-dried.
- the specific viscosity (7? Inh ) of polyamide was 5.73.
- Example 2 The dope obtained in Example 1 was transferred to a cylinder, heated to 70 ° C. under reduced pressure and deaeration.
- the loop was discharged from a thin metal spinneret with a 100 micron diameter hole using a mechanically driven syringe.
- the discharged fiber is stretched twice while passing through a 1.0 cm air gap provided between the spinneret and the coagulation bath, and the electric drive is wound up through the coagulation bath. I wound up the machine.
- a solution consisting of 1.5 N hydrochloric acid was used as the coagulation liquid.
- the coagulation liquid was set at 25 ° C. After passing the coagulation liquid 30 cm, the yarn was pulled up from the water at an angle of 45 degrees and wound on the above-described electric drive winder.
- the fiber was wound on a stainless steel bobbin at a rate of 20 m, washed on a pobin with room temperature water for 1 hour, and dried with a hot air dryer at 80 to obtain a fiber.
- the resulting poly (P-dihydroxy-biphenylene terephthalamide) yarn was wound on a rigid metal frame and heated at 450 for 10 minutes.
- the chemical structure of the dark red yarn was identified as benzoxazole by IR spectrum.
- 4 l Ot maximum weight loss rate near, stable region between 450 and 6 10 was observed.
- the measured weight loss due to cyclization is 10.8%, which is close to 10.5% of the theoretical value. This indicates that the conversion is progressing quantitatively.
- the decomposition start temperature was 630 (5% weight loss).
- the obtained fiber had a specific viscosity (7? Inh ) of 7.6 and a phosphorus atom content of 12 ppm.
- Table 1 shows the measurement results of the physical properties of the fibers before and after heat treatment. table 1 The invention's effect
- the dope of the present invention is excellent in moldability, and can be formed into a fiber, a film, a pulp-like particle or the like by a wet method. Further, the dope of the present invention can be formed into a molded body having molecular orientation and excellent elastic modulus and heat resistance simply by molding. In addition, since the dope of the present invention uses a solvent that is less corrosive to metals, corrosion of the device due to the dope can be suppressed.
- a fiber excellent in heat resistance, strength and elastic modulus can be manufactured.
- an aromatic polyoxazole fiber having a low content of a phosphorus compound such as polyphosphoric acid can be produced. Further, the production method of the present invention has an advantage that the residual solvent can be removed by washing in a short time. Industrial applicability
- the fiber obtained by spinning the dope of the present invention can be widely used in the fields of ropes, belts, insulating fabrics, thermosetting or thermoplastic resin reinforcements, and protective clothing.
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- Macromolecular Compounds Obtained By Forming Nitrogen-Containing Linkages In General (AREA)
Description
Claims
Priority Applications (5)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002628267A CA2628267A1 (en) | 2005-11-02 | 2006-11-01 | Dope and process for the production of fiber from the dope |
CN2006800410118A CN101300288B (zh) | 2005-11-02 | 2006-11-01 | 纺丝液及使用该纺丝液的纤维的制造方法 |
US12/092,390 US7838622B2 (en) | 2005-11-02 | 2006-11-01 | Dope and process for the production of fiber from the dope |
JP2007542854A JPWO2007052825A1 (ja) | 2005-11-02 | 2006-11-01 | ドープおよび該ドープを用いた繊維の製造方法 |
EP06823218A EP1947132A4 (en) | 2005-11-02 | 2006-11-01 | SPINNING MASS AND METHOD FOR THE PRODUCTION OF FIBER USING THE SPINNING MASS |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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JP2005-319412 | 2005-11-02 | ||
JP2005319412 | 2005-11-02 |
Publications (1)
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WO2007052825A1 true WO2007052825A1 (ja) | 2007-05-10 |
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PCT/JP2006/322317 WO2007052825A1 (ja) | 2005-11-02 | 2006-11-01 | ドープおよび該ドープを用いた繊維の製造方法 |
Country Status (8)
Country | Link |
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US (1) | US7838622B2 (ja) |
EP (1) | EP1947132A4 (ja) |
JP (1) | JPWO2007052825A1 (ja) |
KR (1) | KR20080064952A (ja) |
CN (1) | CN101300288B (ja) |
CA (1) | CA2628267A1 (ja) |
TW (1) | TW200732381A (ja) |
WO (1) | WO2007052825A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008133351A1 (ja) * | 2007-04-26 | 2008-11-06 | Teijin Limited | ド一プおよび該ド一プを用いた繊維の製造方法 |
US20110300379A1 (en) * | 2009-02-17 | 2011-12-08 | Teijin Aramid B.V. | Method for producing a filament yarn from an aromatic polyamide |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20100227984A1 (en) * | 2009-03-05 | 2010-09-09 | Dang Thuy | HYDROLYSIS-RESISTANT POLY (p-PHENYLENEBENZOBISOXAZOLE) (PBO) FIBERS |
WO2017141878A1 (ja) * | 2016-02-18 | 2017-08-24 | 東レ株式会社 | 複合高分子電解質膜およびそれを用いた膜電極複合体、固体高分子型燃料電池 |
Citations (3)
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- 2006-11-01 JP JP2007542854A patent/JPWO2007052825A1/ja not_active Withdrawn
- 2006-11-01 EP EP06823218A patent/EP1947132A4/en not_active Withdrawn
- 2006-11-01 WO PCT/JP2006/322317 patent/WO2007052825A1/ja active Application Filing
- 2006-11-01 KR KR1020087009711A patent/KR20080064952A/ko active IP Right Grant
- 2006-11-01 US US12/092,390 patent/US7838622B2/en not_active Expired - Fee Related
- 2006-11-01 CN CN2006800410118A patent/CN101300288B/zh not_active Expired - Fee Related
- 2006-11-01 CA CA002628267A patent/CA2628267A1/en not_active Abandoned
- 2006-11-02 TW TW095140579A patent/TW200732381A/zh unknown
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JPS60500538A (ja) * | 1982-09-17 | 1985-04-18 | エス・ア−ル・アイ・インタ−ナシヨナル | 液晶質のポリマ−組成物、製法および生成物 |
JPH11322929A (ja) * | 1998-05-21 | 1999-11-26 | Toyobo Co Ltd | ポリベンゾオキサゾールポリマーまたはポリベンゾチアゾールポリマー、およびその製造方法 |
JP2001226485A (ja) * | 1999-12-06 | 2001-08-21 | Toyobo Co Ltd | ポリベンザゾールおよびその繊維 |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2008133351A1 (ja) * | 2007-04-26 | 2008-11-06 | Teijin Limited | ド一プおよび該ド一プを用いた繊維の製造方法 |
US20110300379A1 (en) * | 2009-02-17 | 2011-12-08 | Teijin Aramid B.V. | Method for producing a filament yarn from an aromatic polyamide |
US8871124B2 (en) * | 2009-02-17 | 2014-10-28 | Teijin Aramid B.V. | Method for producing a filament yarn from an aromatic polyamide |
Also Published As
Publication number | Publication date |
---|---|
CN101300288A (zh) | 2008-11-05 |
US7838622B2 (en) | 2010-11-23 |
EP1947132A1 (en) | 2008-07-23 |
CA2628267A1 (en) | 2007-05-10 |
JPWO2007052825A1 (ja) | 2009-04-30 |
US20090127735A1 (en) | 2009-05-21 |
TW200732381A (en) | 2007-09-01 |
KR20080064952A (ko) | 2008-07-10 |
EP1947132A4 (en) | 2011-09-21 |
CN101300288B (zh) | 2011-02-23 |
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