WO2011125480A1 - 分岐状ポリアリーレンスルフィド樹脂及びその製造方法 - Google Patents
分岐状ポリアリーレンスルフィド樹脂及びその製造方法 Download PDFInfo
- Publication number
- WO2011125480A1 WO2011125480A1 PCT/JP2011/056762 JP2011056762W WO2011125480A1 WO 2011125480 A1 WO2011125480 A1 WO 2011125480A1 JP 2011056762 W JP2011056762 W JP 2011056762W WO 2011125480 A1 WO2011125480 A1 WO 2011125480A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- mol
- sulfide resin
- sulfur source
- polyarylene sulfide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- D—TEXTILES; PAPER
- D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
- D01F—CHEMICAL FEATURES IN THE MANUFACTURE OF ARTIFICIAL FILAMENTS, THREADS, FIBRES, BRISTLES OR RIBBONS; APPARATUS SPECIALLY ADAPTED FOR THE MANUFACTURE OF CARBON FILAMENTS
- D01F6/00—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof
- D01F6/58—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products
- D01F6/76—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products
- D01F6/765—Monocomponent artificial filaments or the like of synthetic polymers; Manufacture thereof from homopolycondensation products from other polycondensation products from polyarylene sulfides
-
- 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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/0231—Polyarylenethioethers containing chain-terminating or chain-branching agents
-
- 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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/025—Preparatory processes
- C08G75/0254—Preparatory processes using metal sulfides
-
- 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
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
- C08G75/0204—Polyarylenethioethers
- C08G75/0277—Post-polymerisation treatment
- C08G75/0281—Recovery or purification
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/249921—Web or sheet containing structurally defined element or component
Definitions
- the present invention relates to a branched polyarylene sulfide resin, a method for producing the same, and a fiber made of the resin. More specifically, branched polyarylene sulfide resins suitable for uses such as high-temperature bag filters, electrical insulating materials, dryer canvas, heat insulating materials, and improved operability and productivity in spinning and drawing processes, and production methods thereof, In addition, the present invention relates to a melt-molded article and a fiber made of the resin.
- PAS resin such as polyphenylene sulfide (hereinafter also referred to as “PPS”) resin has heat resistance, chemical resistance, flame resistance, mechanical strength, It is a resin excellent in electrical properties such as insulation and functional balance such as dimensional stability. Since PAS resin can be molded into various molded products, films, sheets, fibers, etc. by general melt processing methods such as injection molding, extrusion molding, compression molding, etc., such as electric / electronic equipment, automobile equipment, chemical equipment, etc. It is widely used as a resin material in a wide range of fields. In addition, since PAS resin can be used continuously in a high temperature environment of 170 ° C.
- PAS resin is a bag filter of a dust collector using PAS resin fibers.
- the exhaust gas temperature in contact with the bag filter may be as high as 140 ° C. to 250 ° C., and the filter material of the bag filter is required to have heat resistance. Further, the exhaust gas often contains acid gas and moisture, and the filter medium of the bag filter is also required to have acid resistance and hydrolysis resistance.
- the use of PAS resin is increasing as a high-performance fiber that matches this application. In addition, it is necessary to extend the service life of the bag filter and to maintain high collection efficiency by removing the dust adhering to the bag filter by using mechanical vibration or reverse airflow. It is desired to stably supply PAS fibers excellent in spinnability.
- a PAS resin for forming a PAS fiber only a low molecular weight (melt viscosity of about 10 Pa ⁇ s or less) can be obtained by a normal polymerization method. Therefore, heat treatment is performed in the presence of oxygen to form a crosslinked PAS resin. In order to achieve the required melt viscosity, a method of increasing the molecular weight by using a crosslinking agent during polymerization has been used. These high molecular weight PAS resins have a high degree of cross-linking and branching, and therefore are inferior in extrudability and difficult to form fibers and the like. By using a polymerization aid or a phase separation agent, a high molecular weight linear PAS resin has been developed.
- Patent Document 1 Japanese Patent Application Laid-Open No. Sho 63-315655 (Patent Document 1) describes a linear type weight average in order to eliminate the disadvantages of conventional heat-crosslinking PAS resins and PAS resins obtained by polymerization in the presence of a crosslinking agent.
- a meltblown nonwoven fabric comprising PPS having a molecular weight of 20000 to 70000 is disclosed.
- the weight average molecular weight exceeds 70,000, it is necessary to set the spinning conditions at a temperature considerably higher than the melting point, which causes decomposition or gelation of the polymer, resulting in lack of spinning stability due to nozzle clogging or the like.
- the weight average molecular weight is less than 20000, the melt temperature becomes extremely low just by setting the spinning temperature slightly higher than the melting point. Therefore, the control range of the spinning conditions is narrow and the nonwoven fabric strength is low.
- PAS resin one obtained by copolymerizing a polyhaloaromatic compound such as trichlorobenzene and three-dimensionally crosslinking is known.
- a polyhaloaromatic compound such as trichlorobenzene and three-dimensionally crosslinking
- Patent Document 2 Patent Document 2; corresponding to US Pat. No. 5,200,500, US Pat. No. 5,268,451 and European Patent Application Publication No. 0344977
- a reacted PAS crosslinked polymer is disclosed.
- This cross-linked PAS resin can be added to a PAS resin composition and used as a polymer modifier such as an anti-burr agent during injection molding, a weld strength improver, and a crystallinity improver for injection molded products.
- Patent Document 3 corresponding to European Patent Application Publication No. 1837359
- a branched PAS resin having a melt viscoelasticity tan ⁇ measured at 1 rad / sec of 0.10 to 0.30 is obtained.
- a thermoplastic resin such as a linear polyarylene sulfide resin as a polymer modifier
- JP 2009-270230 A when performing melt extrusion of a PAS resin, the measured value of the viscosity activation energy of the melt is fed back to the screw rotation speed of the extruder in the extruder.
- JP 2009-270219 A describes a total peak area value by HPLC (High Performance Liquid Chromatography) analysis, which is an index of the amount of low molecular weight substances in a polymer.
- HPLC High Performance Liquid Chromatography
- any of the conventional linear PAS resin, branched PAS resin, and cross-linked PAS resin is difficult to spin alone to form a fiber, or to be melt-molded into a film or the like. Only thing was obtained.
- the problem of the present invention is that the PAS resin has a heat resistance, chemical resistance, flame retardancy, mechanical strength, electrical properties, and extrusion, such as spinning and film molding, without impairing the functional balance such as dimensional stability.
- An object of the present invention is to provide a PAS resin that can be stably molded and is excellent in operability, and a method for producing the same when molding a product with stretching.
- the present invention provides a PAS resin that can be melt-molded without causing contamination in resin discharge holes such as nozzles, and can be spun at a high speed without breakage of yarn, a method for producing the same, a PAS melt-molded product, and It is an object to provide a PAS fiber.
- the present inventors have developed a unique melt viscosity characteristic and a branch having high whiteness.
- a PAS resin was conceived.
- the present inventors polymerize the sulfur source and dihaloaromatic compound in an organic amide solvent in the presence of a specific amount of polyhaloaromatic compound at a temperature of 170 to 290 ° C. The idea was to produce a PAS resin.
- the present inventors have conceived a melt-molded product and fiber made of the branched PAS resin.
- Branched not only has a different molecular structure from the conventional “linear” and “crosslinked”, but also has a high melt viscosity like the conventional “branched” PAS resin. This means a branched structure that can be melt-formed or spun independently.
- melt viscosity is the ratio of melt viscosity measured at a shear rate of 200 sec -1 Shear rate dependence of 1.4 to 2.6;
- a branched PAS resin as described above is provided.
- a sulfur source and a dihaloaromatic compound are added in an organic amide solvent, and three or more halogen substituents are added in 0.0001 to 0.01 mol of molecule per mol of the charged sulfur source.
- a method for producing the branched PAS resin wherein a polymerization reaction is carried out at a temperature of 170 to 290 ° C. in the presence of the polyhaloaromatic compound having the polyhaloaromatic compound.
- the polymerization reaction is carried out in an organic amide solvent by adding 0.0001 to 0.01 mol of the polyhaloaromatic compound per mol of the sulfur source, the dihaloaromatic compound, and the charged sulfur source.
- a method for producing the branched PAS resin is provided in which the polymerization reaction is performed at a temperature of 170 to 290 ° C.
- the polymerization reaction is performed by polymerizing a sulfur source and a dihaloaromatic compound at a temperature of 170 to 270 ° C. in an organic amide solvent, and the conversion rate of the dihaloaromatic compound is preferably 30% or more. Is 80% or more, 0.0001 to 0.01 mol of polyhaloaromatic compound per mol of the charged sulfur source is added to the polymerization reaction mixture, and at the same time or after that, a phase separation agent is added. Then, the method for producing the branched PAS resin is provided in which the polymerization reaction mixture is heated to continue the polymerization reaction at a temperature of 240 to 290 ° C.
- a mixture containing an organic amide solvent, a sulfur source containing an alkali metal hydrosulfide, and an alkali metal hydroxide is heated to remove water from the system containing the mixture.
- Dehydration step 1 for discharging at least a part of the product out of the system;
- Preparation step 2 for preparing a mixture containing a product, moisture, and a dihaloaromatic compound;
- First stage polymerization step 3 in which 001 to 0.01 mol of polyhaloaromatic compound is added, and at the same time or further thereafter, a phase separation agent; and (4) Second stage polymerization step in which the polymerization reaction is continued at a temperature of 240 to 290 ° 4; and a method for producing the branched PAS resin.
- the branched PAS is dehydrated to a water content of 0.01 to 2 mol per mol of sulfur source (charged sulfur source) remaining in the system after the dehydration step.
- a method for producing a resin is provided.
- the ratio of each component per mol of the charged sulfur source is 0.95 to 1.09 mol of alkali metal hydroxide, 0.01 to 2 mol of water, and there is provided the above-mentioned branched PAS resin production method for preparing a charged mixture containing these components such that the dihaloaromatic compound is 0.950 to 1.200 mol.
- the polymerization reaction mixture contains
- the method for producing the branched PAS resin is further provided by adding a polyhaloaromatic compound and a phase separation agent.
- the branching agent is added during the period from the addition of the polyhaloaromatic compound to the conversion of the dihaloaromatic compound being 95%.
- a method for producing a PAS resin is provided.
- the amount of water in the polymerization reaction mixture is charged per mole of sulfur source in the polymerization reaction mixture.
- a method for producing the branched PAS resin in which water is added as a phase separation agent so as to be more than 2 mol and 10 mol or less.
- a method for producing the branched PAS resin wherein a polymerization aid, for example, water and an organic carboxylic acid metal salt is further added to perform a polymerization reaction.
- a polymerization aid for example, water and an organic carboxylic acid metal salt is further added to perform a polymerization reaction.
- the branched PAS resin is provided with a plurality of washing steps for washing the PAS resin obtained by the polymerization reaction with a hydrophilic organic solvent containing 1 to 30% by mass of water.
- a manufacturing method is provided.
- melt-molded article and fibers made of the branched PAS resin, and a filter cloth containing the fibers.
- the branched PAS resin and the method for producing the branched PAS resin of the present invention can be spun without impairing the functional balance such as heat resistance, chemical resistance, flame retardancy, mechanical strength, electrical properties, and dimensional stability.
- the functional balance such as heat resistance, chemical resistance, flame retardancy, mechanical strength, electrical properties, and dimensional stability.
- stable molding is possible and it is possible to provide a PAS resin with excellent operability.
- the branched PAS resin of the present invention can be spun at a high speed without thread breakage without causing contamination in resin discharge holes such as nozzles, so that it can be used for various textile products such as bag filters. Useful as a filter cloth.
- Sulfur source In the present invention, an alkali metal sulfide, an alkali metal hydrosulfide, or a mixture thereof is used as the sulfur source. Hydrogen sulfide can also be used as a sulfur source.
- an alkali metal hydrosulfide or a sulfur source containing an alkali metal hydrosulfide as a main component is preferable.
- the alkali metal hydrosulfide include, but are not limited to, lithium hydrosulfide, sodium hydrosulfide, potassium hydrosulfide, rubidium hydrosulfide, cesium hydrosulfide, and a mixture of two or more thereof.
- the alkali metal hydrosulfide any of an anhydride, a hydrate, and an aqueous solution may be used. Among these, sodium hydrosulfide and lithium hydrosulfide are preferable because they can be obtained industrially at low cost.
- the sulfur source is a mixture of an alkali metal hydrosulfide and an alkali metal sulfide
- the total molar amount of the alkali metal hydrosulfide and the alkali metal sulfide is determined based on the sulfur source (“charge” Mole amount of “sulphur source” or “effective sulfur source”.
- this total molar amount is the molar amount of the charged sulfur source after the dehydrating step when the dehydrating step is arranged prior to the charging step.
- alkali metal sulfide examples include, but are not limited to, lithium sulfide, sodium sulfide, potassium sulfide, rubidium sulfide, cesium sulfide, and a mixture of two or more thereof.
- the alkali metal sulfide any of an anhydride, a hydrate, and an aqueous solution may be used.
- sodium sulfide is preferable from the viewpoint of being industrially available at a low cost and being easy to handle.
- Alkali metal hydroxide The production method of the present invention employs a method of polymerizing a sulfur source containing an alkali metal hydrosulfide and a dihaloaromatic compound in the presence of an alkali metal hydroxide in an organic amide solvent containing water. It is preferable.
- alkali metal hydroxide examples include, but are not limited to, lithium hydroxide, sodium hydroxide, potassium hydroxide, rubidium hydroxide, cesium hydroxide, and a mixture of two or more thereof.
- sodium hydroxide is preferable because it is industrially available at a low cost.
- the dihaloaromatic compound used in the present invention is a dihalogenated aromatic compound having two halogen atoms directly bonded to an aromatic ring.
- Specific examples of the dihaloaromatic compound include, for example, o-dihalobenzene, m-dihalobenzene, p-dihalobenzene, dihalotoluene, dihalonaphthalene, methoxy-dihalobenzene, dihalobiphenyl, dihalobenzoic acid, dihalodiphenyl ether, dihalodiphenyl sulfone. , Dihalodiphenyl sulfoxide, and dihalodiphenyl ketone. These dihaloaromatic compounds can be used alone or in combination of two or more.
- the halogen atom refers to each atom of fluorine, chlorine, bromine and iodine, and in the same dihaloaromatic compound, the two halogen atoms may be the same or different from each other.
- the dihaloaromatic compound in many cases, o-dichlorobenzene, m-dichlorobenzene, p-dichlorobenzene, or a mixture of two or more thereof is used, and p-dichlorobenzene is particularly preferable.
- Polyhaloaromatic compounds In the present invention, in order to introduce a branched structure into the PAS resin, a polyhaloaromatic compound having three or more halogen substituents in the molecule (hereinafter sometimes simply referred to as “polyhaloaromatic compound”) is used. To do.
- the halogen substituent is usually a group in which a halogen atom is directly bonded to an aromatic ring.
- a halogen atom refers to each atom of fluorine, chlorine, bromine, and iodine.
- a plurality of halogen atoms may be the same or different.
- polyhaloaromatic compound examples include 1,2,3-trichlorobenzene, 1,2,4-trichlorobenzene, 1,3,5-trichlorobenzene, hexachlorobenzene, 1,2,3,4-tetrachlorobenzene, 1,2,4,5-tetrachlorobenzene, 1,3,5-trichloro-2,4,6-trimethylbenzene, 2,4,6-trichlorotoluene, 1,2,3-trichloronaphthalene, 1,2, 4-trichloronaphthalene, 1,2,3,4-tetrachloronaphthalene, 2,2 ', 4,4'-tetrachlorobiphenyl, 2,2', 4,4'-tetrachlorobenzophenone, 2,4,2 ′ -Trichlorobenzophenone is mentioned.
- polyhaloaromatic compounds can be used alone or in combination of two or more.
- trihalobenzene is preferable, and trichlorobenzene such as 1,2,4-trichlorobenzene and 1,3,5-trichlorobenzene is more preferable.
- a small amount of an active hydrogen-containing halogenated aromatic compound, a halogenated aromatic nitro compound, or the like can be used.
- a monohalo compound can be used in combination in order to form a terminal of a specific structure in the produced PAS resin, or to adjust a polymerization reaction or a molecular weight.
- the monohalo compound not only a monohaloaromatic compound but also a monohaloaliphatic compound can be used.
- Organic amide solvent In the present invention, an organic amide solvent which is an aprotic polar organic solvent is used as a solvent for the dehydration reaction and the polymerization reaction.
- the organic amide solvent is preferably stable to alkali at high temperatures.
- organic amide solvent examples include amide compounds such as N, N-dimethylformamide and N, N-dimethylacetamide; N-alkylcaprolactam compounds such as N-methyl- ⁇ -caprolactam; N-methyl-2-pyrrolidone, N-alkylpyrrolidone compounds or N-cycloalkylpyrrolidone compounds such as N-cyclohexyl-2-pyrrolidone; N, N-dialkylimidazolidinone compounds such as 1,3-dialkyl-2-imidazolidinone; tetramethylurea, etc. Tetraalkylurea compounds; hexaalkylphosphoric acid triamide compounds such as hexamethylphosphoric acid triamide. These organic amide solvents can be used alone or in combination of two or more.
- N-alkylpyrrolidone compounds N-cycloalkylpyrrolidone compounds, N-alkylcaprolactam compounds, and N, N-dialkylimidazolidinone compounds are preferred, and N-methyl-2-pyrrolidone (NMP) N-methyl- ⁇ -caprolactam and 1,3-dialkyl-2-imidazolidinone are more preferred, and NMP is particularly preferred.
- Polymerization aid In the present invention, various polymerization aids can be used as necessary in order to promote the polymerization reaction. Specific examples of polymerization aids include generally known organic sulfonic acid metal salts, lithium halides, water, organic carboxylic acid metal salts, alkali metal phosphates, and the like as polymerization aids for PAS resins. Or it can be used as a mixture. Examples of the organic carboxylic acid metal salt include alkali metal carboxylates such as lithium acetate, sodium acetate, potassium acetate, sodium propionate, lithium valerate, lithium benzoate, sodium benzoate, sodium phenylacetate, p-toluyl Mention may be made of potassium acid and mixtures thereof.
- alkali metal carboxylates sodium acetate is particularly preferably used because it is inexpensive and easily available.
- the amount of polymerization aid used varies depending on the type of compound used, but is generally in the range of 0.01 to 10 moles, preferably 0.1 to 2 moles, more preferably 0.8 moles per mole of the charged sulfur source. The range is from 2 to 1.8 mol, particularly preferably from 0.3 to 1.7 mol.
- the polymerization assistant is an organic sulfonic acid metal salt, lithium halide or organic carboxylic acid metal salt
- the upper limit of the amount used is preferably 1 mol or less, particularly preferably 0.8 mol or less.
- the addition time of the polymerization aid may be any time. That is, it can be added at or before the dehydration step, the charging step, and the polymerization step described later.
- Phase separation agent In the present invention, the use of a phase separation agent is not essential, but in order to obtain a branched PAS resin having excellent properties such as heat resistance and mechanical strength and excellent moldability such as spinnability, the phase separation agent is used. Is preferably used.
- the phase separation agent a substance known to function as a phase separation agent in this technical field such as sodium acetate, lithium acetate, lithium propionate, alkali metal carboxylate such as lithium benzoate, and water is used. be able to.
- the alkali metal carboxylate is contained in the above organic carboxylic acid metal salt, and is also used as a polymerization aid.
- phase separation agents water that is inexpensive and easy to post-process, or a combination of water and sodium acetate is preferable.
- the amount of the phase separation agent used is usually in the range of 0.01 to 10 mol per 1 mol of the charged sulfur source.
- Part of the phase separation agent may coexist from the beginning of the polymerization, but may be adjusted to an amount sufficient to form phase separation by adding the phase separation agent during the polymerization reaction. desirable.
- branched PAS resin In the method for producing a branched PAS resin of the present invention, a sulfur source and a dihaloaromatic compound are polymerized in an organic amide solvent in the presence of a polyhaloaromatic compound having three or more halogen substituents in the molecule. It is a manufacturing method of branched PAS resin.
- a sulfur source and a dihaloaromatic compound are added in an organic amide solvent in an amount of 0.0001 to 0.01 mol, preferably 1 mol per mol of the charged sulfur source.
- 0.0005 to 0.008 mol more preferably 0.0007 to 0.006 mol, particularly preferably 0.001 to 0.005 mol of polyhaloaromatic compound having 3 or more halogen substituents in the molecule.
- the polymerization reaction is carried out at a temperature of 170 to 290 ° C.
- One preferred embodiment is that in the method for producing a branched PAS resin of the present invention, in an organic amide solvent, a sulfur source, a dihaloaromatic compound, and 0.0001 to 0.01 mol per mol of the charged sulfur source, preferably Is a polymerization reaction of 0.0005 to 0.008 mol, more preferably 0.0007 to 0.006 mol, particularly preferably 0.001 to 0.005 mol of polyhaloaromatic compound at a temperature of 170 to 290 ° C. .
- a sulfur source and a dihaloaromatic compound are polymerized at a temperature of 170 to 270 ° C. in an organic amide solvent to convert the dihaloaromatic compound.
- the rate reaches 30% or more, 0.0001 to 0.01 mol of polyhaloaromatic compound per mol of the charged sulfur source is added to the polymerization reaction mixture, and at the same time or thereafter, that is, the reaction time is increased.
- the phase separation agent is added, and then the polymerization reaction mixture is heated to a temperature of 240 ° C. or higher, and the polymerization reaction is continued at a temperature of 240 to 290 ° C.
- a sulfur source and a dihaloaromatic compound are polymerized at a temperature of 170 to 270 ° C. in an organic amide solvent, and the conversion rate of the dihaloaromatic compound is increased.
- 0.0001 to 0.01 mol of polyhaloaromatic compound per mol of the charged sulfur source is added to the polymerization reaction mixture, and at the same time or thereafter, a phase separation agent is further added ( (Preliminary polymerization step).
- the polymerization reaction mixture is heated to a temperature of 240 ° C. or higher, and the polymerization reaction mixture is heated to a temperature of 240 to 290 ° C. to continue the polymerization reaction (second-stage polymerization step).
- the sulfur source it is preferable to use a sulfur source containing an alkali metal hydrosulfide.
- the polymerization reaction system preferably contains an alkali metal hydroxide together with the sulfur source.
- the preferred method for producing a branched PAS resin of the present invention comprises a sulfur source and a dihaloaromatic compound in an organic amide solvent in the presence of a polyhaloaromatic compound having three or more halogen substituents in the molecule.
- Dehydration step 1 for discharging the wastewater out of the system; (2) Mixing the mixture remaining in the system and the dihaloaromatic compound in the dehydration step, and containing the organic amide solvent, sulfur source (prepared sulfur source), alkali metal hydroxide, moisture, and dihaloaromatic compound Charging step 2 for preparing a charging mixture to be carried out; (3) By heating the charged mixture to a temperature of 170 to 270 ° C., the sulfur source and the dihaloaromatic compound are polymerized in an organic amide solvent containing moisture, and the conversion of the dihaloaromatic compound is 30 At the time when the amount becomes at least%, 0.0001 to 0.01 mol of a polyhaloaromatic compound per mol of the charged sulfur source is added to the polymerization reaction mixture, and at the same time or after that, a phase separation agent is further added. Step 3; and (4) Subsequent polymerization step 4 in which the polymerization reaction is continued at a temperature of 240 to 290 ° C
- alkali metal sulfides have been widely used as a sulfur source in PAS resin production methods.
- alkali metal hydrosulfides or a mixture of alkali metal hydrosulfides and alkali metal sulfides are used as raw materials for sulfur sources, and these sulfur sources are used as alkali metal hydroxides.
- a method of polymerizing with a dihaloaromatic compound in the presence of is known. In this method, in order to carry out the polymerization reaction stably, it is desirable to accurately adjust the content ratio of each component to be subjected to the polymerization reaction and strictly control the polymerization conditions. Therefore, a preferable production method of the present invention will be described in detail below.
- the sulfur source often contains moisture such as hydrated water (crystal water).
- a sulfur source and an alkali metal hydroxide are used as an aqueous mixture, water is contained as a medium.
- the polymerization reaction between the sulfur source and the dihaloaromatic compound is affected by the amount of water present in the polymerization reaction system. Therefore, in general, a dehydration step is arranged before the polymerization step to control the amount of water in the polymerization reaction system.
- a mixture containing an organic amide solvent, a sulfur source containing an alkali metal hydrosulfide, and an alkali metal hydroxide is heated, and from within the system containing the mixture, At least a part of the distillate containing water is discharged out of the system.
- the dehydration step is desirably performed in an inert gas atmosphere.
- the dehydration step is performed in the reaction tank, and the distillate is generally discharged out of the reaction tank.
- the water to be dehydrated in the dehydration step includes hydration water contained in each raw material charged in the dehydration step, an aqueous medium of an aqueous mixture, water by-produced by a reaction between the raw materials, and the like.
- the charging of each raw material into the reaction vessel is usually performed in a temperature range of 20 ° C to 300 ° C, preferably 20 ° C to 200 ° C.
- the order in which the raw materials are charged may be in any order, and additional raw materials may be added during the dehydration operation.
- an organic amide solvent is used as a medium.
- the organic amide solvent used in the dehydration step is preferably the same as the organic amide solvent used in the polymerization step, and NMP is more preferable because it is easily available industrially.
- the amount of the organic amide solvent used is usually about 0.1 to 10 kg per mole of the sulfur source introduced into the reaction vessel.
- the mixture containing the above components is usually at 300 ° C. or lower, preferably 100 to 250 ° C., usually 15 minutes to 24 hours, preferably 30 minutes. It is carried out by heating for 10 minutes to 10 minutes.
- the distillate contains water and an organic amide solvent.
- a part of the distillate may be circulated in the system in order to suppress the discharge of the organic amide solvent out of the system.
- at least one of the distillates containing water is used. The part is discharged out of the system.
- a small amount of organic amide solvent is discharged out of the system together with water.
- the amount of sulfur source in the mixture remaining in the system after the dehydration step is smaller than the amount of the introduced sulfur source due to hydrogen sulfide volatilized out of the system in the dehydration step.
- the amount of the sulfur source in the mixture remaining in the system after the dehydration step is the mole of hydrogen sulfide volatilized out of the system from the molar amount of the introduced sulfur source. Substantially equal to the value minus the amount.
- the sulfur source in the mixture remaining in the system after the dehydration step is referred to as “effective sulfur source”.
- This effective sulfur source is a “charged sulfur source” in the charging step and the subsequent polymerization step. That is, in the present invention, the “charged sulfur source” means a sulfur source used in the charge step and the subsequent polymerization step.
- effective sulfur present in the mixture after the dehydration step Means source.
- a mixture containing an organic amide solvent, a sulfur source containing an alkali metal hydrosulfide, and 0.900 to 1.050 mole of alkali metal hydroxide per mole of sulfur source is heated to It is preferable that at least a part of the distillate containing water is discharged out of the system. If the molar ratio of alkali metal hydroxide per mole of sulfur source is too small in the dehydration process, the amount of hydrogen sulfide that volatilizes increases, leading to a decrease in productivity due to a decrease in the amount of charged sulfur source, or after dehydration.
- water such as hydrated water, aqueous medium, and by-product water is dehydrated until it falls within the required range.
- the amount of water is preferably 0.01 to 2 mol, more preferably 0.2 to 1.9 mol, still more preferably 0.5 to 1.8 mol, in particular, relative to 1 mol of the effective sulfur source. It is desirable to dehydrate to 0.8 to 1.7 mol. If the amount of water becomes too small in the dehydration step, water can be added to the desired amount of water in the preparation step.
- Alkali metal sulfide generates an alkali metal hydroxide by an equilibrium reaction with water.
- the molar ratio of the charged amount of alkali metal hydroxide to 1 mol of effective sulfur source is determined in consideration of the amount of alkali metal sulfide as a minor component. calculate.
- the amount of hydrogen sulfide volatilized out of the system in the dehydration process is also considered.
- the molar ratio of the charged amount of alkali metal hydroxide to 1 mol of the effective sulfur source is calculated.
- Preparation process In the preparation step, the mixture remaining in the system in the dehydration step and the dihaloaromatic compound are mixed to obtain an organic amide solvent, a sulfur source (prepared sulfur source), an alkali metal hydroxide, moisture, and a dihaloaromatic compound. A charge mixture is prepared. Generally, since the content and quantity ratio of each component fluctuate in the dehydration step, adjustment of each component amount in the preparation step needs to be performed in consideration of the amount of each component in the mixture obtained in the dehydration step. .
- the ratio of each component per 1 mol of the charged sulfur source is 0.95 to 1.09 mol of alkali metal hydroxide, and the water content is 0.01 to It is desirable to prepare a charged mixture containing each of these components so that 2 mol and the dihaloaromatic compound are 0.950 to 1.200 mol.
- the amount of the charged sulfur source (effective sulfur source) can be calculated by subtracting the “molar amount of hydrogen sulfide volatilized in the dehydration step” from the “molar amount of sulfur source input in the dehydration step”.
- Adjustment of the amount ratio (molar ratio) of each component in the charged mixture is usually performed by adding components other than the charged sulfur source to the mixture obtained in the dehydration step.
- the dihaloaromatic compound is added to the mixture in the charging step.
- these components are added in the preparation process.
- an organic amide solvent is added in the preparation step. Therefore, in the preparation step, an organic amide solvent, water, and an alkali metal hydroxide may be added as necessary in addition to the dihaloaromatic compound.
- the number of moles of alkali metal hydroxide is “number of moles of alkali metal hydroxide produced with hydrogen sulfide produced during dehydration”, “number of moles of alkali metal hydroxide added before dehydration”, and “feeding”. It is calculated based on the “number of moles of alkali metal hydroxide added in the process”.
- the molar amount of the alkali metal hydroxide per mol of the charged sulfur source is preferably 0.95 to 1.09 mol, more preferably 0.98 to 1.07 mol, and particularly preferably 1 to 1.065 mol. is there.
- the polymerization reaction can be stably performed, and it is easy to obtain a high-quality branched PAS resin. Become.
- the molar amount of water per mol of the charged sulfur source is preferably 0.01 to 2 mol, more preferably 0.5 to 2 mol, still more preferably 0.7 to 1.8 mol, particularly preferably. Is adjusted to a range of 0.9 to 1.6 mol.
- the dehydration step it takes time for the dehydration step to reduce the amount of coexisting water. If the amount of coexisting water is too large, the polymerization reaction rate is remarkably slow or a decomposition reaction occurs.
- the charging step it preferably contains 0.950 to 1.200 mol, more preferably 0.98 to 1.15 mol, particularly preferably 1 to 1.1 mol of dihaloaromatic compound per mol of the charged sulfur source. It is desirable to prepare a charge mixture. When the use ratio of the dihaloaromatic compound is out of the above range, it becomes difficult to control the melt viscosity within the desired range.
- the amount of the organic amide solvent is usually in the range of 0.1 to 10 kg, preferably 0.15 to 1 kg per mol of the charged sulfur source.
- the amount of the organic amide solvent may be changed during the polymerization step as long as it is within the above range.
- Polymerization process In the method for producing a branched PAS resin of the present invention, the charged mixture is heated to a temperature of 170 to 290 ° C., whereby the sulfur source and the dihaloaromatic compound are converted into the charged sulfur source in a water-containing organic amide solvent.
- the polymerization reaction is carried out in the presence of 0.0001 to 0.01 mol of polyhaloaromatic compound per mol. It is preferable to carry out the polymerization reaction by adding a polymerization aid at an appropriate stage.
- a branched PAS resin of the present invention in a water-containing organic amide solvent, 0.0001 to 0.01 mol of polyhaloaromatic per mol of the sulfur source, dihaloaromatic compound, and charged sulfur source.
- the compound can be subjected to a polymerization reaction at a temperature of 170 to 290 ° C. In this case, the polymerization aid is added to the charged mixture.
- a branched PAS resin of the present invention when the conversion rate of the dihaloaromatic compound becomes 30% or more, 0.0001 to 0.01 per mol of the charged sulfur source in the polymerization reaction mixture.
- Mole of polyhaloaromatic compound can be added, and at the same time or thereafter, a phase separation agent can be added.
- a polymerization assistant can be added at an appropriate stage to carry out the polymerization reaction.
- the polymerization reaction method may be a batch method, a continuous method, or a combination of both methods.
- a method using two or more reaction vessels may be used for the purpose of shortening the polymerization cycle time.
- a heating method a method of maintaining a constant temperature, a stepwise or continuous temperature raising method, or a combination of both methods is used.
- the polymerization temperature can also be lowered during the polymerization reaction.
- the polymerization reaction time is generally 10 minutes to 72 hours, preferably 30 minutes to 48 hours.
- polymerization process can be performed by dividing into a pre-stage polymerization process and a post-stage polymerization process, and the polymerization reaction time in that case is a total time of a pre-stage polymerization process and a post-stage polymerization process.
- the polymerization time in the pre-stage polymerization process is often from 30 minutes to 5 hours.
- the pre-stage polymerization step may be composed of a plurality of steps in which temperature conditions are changed stepwise or water or alkali metal hydroxide is added in divided portions.
- the charged mixture is heated to a temperature of 170 to 290 ° C., preferably 180 to 280 ° C., more preferably 190 to 275 ° C. to initiate the polymerization reaction.
- the charged mixture is heated to a temperature of 170 to 270 ° C. in the pre-stage polymerization process to start the polymerization reaction.
- a prepolymer having a conversion rate of the dihaloaromatic compound of 30% or more is produced.
- the polymerization temperature is too high, side reactions and decomposition reactions tend to occur.
- the conversion rate of the dihaloaromatic compound is preferably 30 to 98%, more preferably 60 to 96%, still more preferably 80 to 95%, and particularly preferably 85 to 95%.
- the conversion rate of the dihaloaromatic compound is calculated based on the amount of the dihaloaromatic compound remaining in the reaction mixture by gas chromatography and based on the remaining amount, the charged amount of the dihaloaromatic compound, and the charged amount of the sulfur source. Can do.
- the polymerization reaction may be initiated by the presence of a polyhaloaromatic compound in the reaction system from the initial stage of the pre-polymerization process or from the stage of the preparation process, but the polyhaloaromatic compound is generally more reactive than the dihaloaromatic. Because it is high, a heterogeneous branched structure is introduced in the early stage of polymerization, resulting in the formation of a gel-like product or a reduction in the maximum draft ratio, so that sufficiently stable moldability, particularly spinnability, can be obtained. There may not be. For this reason, (1) until the conversion of the dihaloaromatic compound is 50%, preferably 45%, particularly preferably 40%, it is at a relatively low temperature, ie typically 150 ° C.
- polymerization reaction mixture is allowed to react at a temperature range of at least 170 ° C. to 245 ° C. at a rate of temperature increase of 1 to 60 ° C. /
- a branched PAS having desired physical properties can be obtained by raising the temperature for a time, preferably 2 to 30 ° C./hour, particularly preferably 3 to 15 ° C./hour. Further, it is preferable to add the polyhaloaromatic compound when the conversion rate of the dihaloaromatic compound becomes 30% or more.
- the polyhaloaromatic compound is added when the conversion rate of the dihaloaromatic compound is 50% or more, more preferably 70% or more, particularly preferably 80% or more, particularly preferably 85% or more.
- the addition of the polyhaloaromatic compound is particularly preferably performed when the conversion rate of the dihaloaromatic compound is usually 98% or less, preferably 97%, more preferably 96%. Do this by the time it reaches 95%.
- a sulfur source and a dihaloaromatic compound are polymerized in an organic amide solvent, and when the conversion rate of the dihaloaromatic compound becomes 30% or more, Add 0.0001 to 0.01 mole of polyhaloaromatic compound and phase separator per mole of charged sulfur source.
- the conversion rate of the dihaloaromatic compound is 30% or more, the weight average molecular weight of the produced polymer (prepolymer) contained in the polymerization reaction mixture is usually 1000 or more, and when the conversion rate is 80% or more, The weight average molecular weight of the produced polymer (prepolymer) is usually 5000 or more.
- the polyhaloaromatic compound is used in a ratio of 0.0001 to 0.01 mol per mol of the charged sulfur source.
- the amount of the polyhaloaromatic compound used is too large, the melt viscosity of the branched PAS resin increases, a gel is generated during melt molding, and the stable moldability, particularly the spinnability is lowered.
- the amount of polyhaloaromatic compound used is too small, the introduction of a branched structure will be insufficient, and it will not be much different from a linear molecular structure. In particular, the spinnability is reduced. As a result, a product with a high maximum draft ratio cannot be obtained.
- the polymerization temperature is lowered during the polymerization reaction, and the polyhaloaromatic compound is added when the conversion rate of the dihaloaromatic compound becomes 30% or more, and then the latter polymerization temperature is reached.
- the temperature can be raised to.
- the temperature of the polymerization reaction mixture at the end of the former polymerization step is desirably set to be lower than a predetermined polymerization temperature specifically employed in the latter polymerization step.
- the phase separation agent is also added when the conversion rate of the dihaloaromatic compound is 30% or more.
- the phase separation agent may be added substantially simultaneously with the polyhaloaromatic compound, or may be added after the addition of the polyhaloaromatic compound in order to allow sufficient reaction time of the polyhaloaromatic compound.
- the conversion rate of the dihaloaromatic compound becomes 30% or more
- the polyhaloaromatic compound is added to the polymerization reaction mixture, and then the conversion rate of the dihaloaromatic compound is usually 98% or less, preferably Can be added at a time of 97% or less, more preferably 96% or less, and still more preferably 95% or less.
- the aforementioned alkali metal carboxylates and water can be used, but water is preferably used. Use of water is preferable because the cost is low and post-treatment is easy.
- water is used as the phase separation agent, the water content (total water content) in the polymerization reaction mixture is included in the polymerization reaction mixture when the conversion rate of the dihaloaromatic compound reaches 80% or more in the pre-stage polymerization step. It is preferable to add water so that the amount is more than 2 moles and 10 moles or less per mole of the charged sulfur source.
- Water is added as a phase separation agent, and the amount of water in the polymerization reaction mixture is charged so that it is preferably 2.3 to 7 mol, more preferably 2.5 to 5 mol per mol of the sulfur source. desirable. Moreover, you may use water and alkali metal carboxylate together. In this case, the amount of water and the alkali metal carboxylate may be an amount that can cause phase separation, but usually 0.5 to 10 mol, preferably 0.6 to 7 mol, particularly preferably water. Is 0.8 to 5 mol, and the alkali metal carboxylate is 0.001 to 0.7 mol, preferably 0.02 to 0.6 mol, particularly preferably 0.05 to 0.5 mol. .
- the polymerization reaction is usually continued in a state in which the phase is separated into a polymer rich phase and a polymer dilute phase by adding a phase separation agent.
- a phase separation agent added to the phase in which the phase is separated into a polymer rich phase and a polymer dilute phase by adding a phase separation agent.
- the amount of the phase separation agent added is too small, it becomes difficult to perform phase separation polymerization, and it becomes difficult to obtain a branched PAS resin having desired characteristics. If the amount of the phase separation agent added is too large, it may take a long time for the polymerization reaction or it may be difficult to produce a granular polymer.
- Subsequent polymerization process After adding the polyhaloaromatic compound and the phase separation agent in the pre-stage polymerization step, the temperature is raised to 240 ° C. or higher, preferably 245 ° C. or higher.
- the polymerization reaction is continued by heating to a temperature of 240 to 290 ° C. Therefore, after the previous polymerization step, the polymerization reaction mixture is heated to a temperature suitable for the subsequent polymerization step.
- the upper limit of the heating temperature is the upper limit of the post polymerization temperature.
- the polymerization reaction be continued in a state where the reaction mixture is phase-separated into a polymer rich phase and a polymer dilute phase.
- the phase separation polymerization reaction is actually performed in a state where the polymer concentrated phase is dispersed as droplets in an organic amide solvent (polymer diluted phase). The phase separation state is clearly observed as the post-polymerization reaction proceeds.
- the polymerization reaction system may be a batch system, a continuous system, or a combination of both systems. In the batch polymerization, a method using two or more reaction vessels may be used for the purpose of shortening the polymerization cycle time.
- the polymerization reaction is continued at a temperature of 240 to 290 ° C., preferably 245 to 280 ° C., more preferably 250 to 275 ° C.
- the polymerization temperature can be maintained at a constant temperature, but may be raised or lowered stepwise as necessary.
- the polymerization reaction time is generally 10 minutes to 72 hours, preferably 30 minutes to 48 hours, in total with the polymerization time in the previous polymerization step. In many cases, the polymerization time in the subsequent polymerization step is about 2 to 10 hours.
- the latter stage polymerization step is omitted. You can also
- Post-processing process The post-treatment after the polymerization reaction can be performed according to a conventional method. For example, when the polymerization reaction mixture is cooled after completion of the polymerization reaction, a slurry containing the produced polymer is obtained.
- the branched PAS resin can be recovered by filtering the cooled slurry as it is or after diluting with water or the like, filtering, washing and filtering, and finally drying.
- the granular polymer can be generated, it is possible to separate the granular polymer from the slurry by a method of sieving using a screen, and to easily separate from the by-product or oligomer. This is preferable because it is possible.
- the slurry may be sieved through the granular polymer while still in the high temperature state.
- the polymer is preferably washed with the same organic amide solvent as the polymerization solvent, a hydrophilic organic solvent such as ketones (for example, methyl ethyl ketone or acetone), alcohols (for example, methanol or isopropanol).
- a hydrophilic organic solvent such as ketones (for example, methyl ethyl ketone or acetone), alcohols (for example, methanol or isopropanol).
- these organic solvents may be water-containing mixtures, and hydrophilic organic solvents containing 1 to 30% by mass, preferably 1 to 20% by mass, particularly preferably 2 to 10% by mass of water are preferable.
- the hydrophilic organic solvent an organic amide solvent, acetone, methanol, isopropanol and the like are particularly preferable.
- the polymer may be washed with hot water or the like.
- the polymer can be treated with a salt such as acid or ammonium chloride.
- the pulverization step may be arranged so as to obtain a desired average particle diameter. It is also possible to pulverize and / or classify the granular polymer.
- Branched PAS resin According to the production method of the present invention, after the polymerization reaction, if necessary, a pulverization step of the produced polymer is arranged, and branches having the following characteristics (a) to (c) and further characteristics (d) and (e): -Like polyarylene sulfide resin can be obtained.
- melt viscosity measured at a temperature of 310 ° C. and a shear rate of 1200 sec ⁇ 1 is 65 to 450 Pa ⁇ s (hereinafter simply referred to as “melt viscosity”);
- melt viscosity The maximum draft ratio measured at a temperature of 310 ° C.
- melt stability is the ratio of melt viscosity after maintained for 30 minutes at a shear rate 1200 sec -1 (hereinafter, simply “Melting stability”) is 0.85 to 1.30.
- the branched PAS resin of the present invention has a melt viscosity measured at a temperature of 310 ° C. and a shear rate of 1200 sec ⁇ 1 in the range of 65 to 450 Pa ⁇ s. It is preferably in the range of 70 to 300 Pa ⁇ s, more preferably 75 to 250 Pa ⁇ s, particularly preferably 77 to 200 Pa ⁇ s.
- the melt viscosity of the branched PAS resin is preferably 70 to 250 Pa ⁇ s, more preferably 75 to 220 Pa ⁇ s, particularly preferably 77 to 190 Pa ⁇ s.
- the melt viscosity of the branched PAS resin is too high, it is necessary to mold at a higher temperature. As a result, a gel is generated at the time of melt molding, and stable moldability, in particular, spinnability is lowered.
- the melt viscosity of the branched PAS resin when the melt viscosity is made to satisfy the above range, the cross-linking proceeds and the spinnability is lowered or the color is brown.
- the melt viscosity of the branched PAS resin is too low, physical properties such as strength and moldability such as spinnability are inferior.
- the branched PAS resin of the present invention has a maximum draft ratio measured at a temperature of 310 ° C. and a discharge speed of 0.05 m / min within a range of 6500 or more, preferably 6800 or more, more preferably 7000 or more, more preferably Is in the range of 8000 or more, particularly preferably 9500 or more.
- maximum draft ratio is within the above range, excellent moldability, particularly spinnability, can be obtained.
- molded products made of the branched PAS resin, particularly fibers have physical properties such as heat resistance and strength. And formability is highly balanced.
- the upper limit of the maximum draft ratio is not particularly limited, but if it is too large, the workability may be inferior in the case of secondary processing or the like, and is usually 20000 or less, preferably 18000 or less, more preferably 15000 or less. Good.
- the maximum draft ratio measured at a temperature of 310 ° C. and a discharge speed of 0.05 m / min is a characteristic measured using a Capillograph 1D manufactured by Toyo Seiki Co., Ltd. using about 20 g of a dry polymer.
- Two fulcrum rollers with a diameter of 40 mm are placed 46 cm below the die, and then a take-up roll is placed, and the take-up speed is changed from 5 m / min to 500 m / min in 1 minute, and the discharge material breaks.
- the ratio VS D / V 0 (maximum draft ratio) between VS D and V 0 is calculated. This operation is repeated for 60 minutes, and an average value of five maximum draft ratios from 20 minutes to 40 minutes is obtained to obtain the maximum draft ratio of the sample.
- the branched PAS resin of the present invention has a whiteness of 65 or more.
- the whiteness is preferably in the range of 68 or more, more preferably 70 or more, and particularly preferably 72 or more. If the whiteness of the PAS is too small, the color tone of the melt-molded product becomes brown or color unevenness occurs.
- the whiteness of PAS is large, in addition to being able to obtain a melt-molded product excellent in color tone, it becomes easy to color the melt-molded product in any color, so there is no particular upper limit of whiteness, Usually within 85. In the case of a conventional heat-crosslinking type PAS resin, coloring is remarkable as a result of receiving a thermal history.
- Branched PAS resin of the present invention the temperature 310 ° C., for a melt viscosity measured at a shear rate of 1200 sec -1, a temperature 310 ° C., a shear rate dependence of melt viscosity is the ratio of melt viscosity measured at a shear rate of 200 sec -1 Is preferably in the range of 1.4 to 2.6.
- the shear rate dependency of the melt viscosity is preferably 1.5 to 2.5, more preferably 1.55 to 2.4, and particularly preferably 1.6 to less than 2.2.
- melt viscosity dependence on the shear rate is too small, the elasticity will be insufficient during melt molding, the die swell will be small, the shape retention will be inferior, and when fibers are formed, yarn breakage is likely to occur, and stable yarns. It becomes difficult to obtain the characteristics and high draft ratio. If the melt viscosity depends too much on the shear rate, the elasticity at the time of melt molding becomes too large, the die swell becomes large, the dimensional accuracy of the molded product decreases, and if fibers are formed, uniform spinning is performed. It becomes difficult to obtain a stable spinnability and a high draft ratio.
- the temperature 310 ° C., to molten viscosity after 5 minute hold at a shear rate 1200 sec -1, a temperature 310 ° C. is the ratio of melt viscosity after maintained for 30 minutes at a shear rate 1200 sec -1 molten
- the stability is preferably in the range of 0.85 to 1.30, more preferably in the range of 0.87 to 1.10, and particularly preferably in the range of 0.90 to 1.05. If the melt stability is too small or too large, a change in the viscosity of the resin will occur during melt molding, making it difficult to achieve stable melt molding. It becomes difficult to obtain a high draft ratio.
- the branched PAS resin of the present invention can be melt-molded.
- the melting point is preferably in the range of 270 to 310 ° C., more preferably 272 to 300 ° C., particularly preferably 273 to 295 ° C., it is suitable for production of melt-formed products and spinning.
- the melting point was measured by using a differential scanning calorimeter (DSC), holding the sample at 30 ° C. for 3 minutes in a nitrogen atmosphere, then increasing the temperature to 340 ° C. at a rate of 10 ° C./min. is there.
- DSC differential scanning calorimeter
- the branched PAS resin of the present invention preferably has an average particle diameter in the range of 50 to 2500 ⁇ m, more preferably 60 to 2000 ⁇ m, and particularly preferably 75 to 1500 ⁇ m.
- the average particle diameter of the branched PAS resin is preferably 100 to 2000 ⁇ m, more preferably 120 in order to obtain stable melt extrudability and spinnability. It is in the range of ⁇ 1800 ⁇ m, more preferably 150 to 1700 ⁇ m, particularly preferably 160 to 1500 ⁇ m.
- the branched PAS resin obtained by polymerization may be pulverized and / or classified.
- the average particle size of the branched PAS resin is too small, handling and weighing become difficult. If the average particle size of the branched PAS resin is too large, the extrudability is impaired, the impurities are not sufficiently washed, the discharge nozzle is clogged and contaminated, and the stable moldability, particularly the spinnability is inferior. It becomes.
- the branched PAS resin of the present invention can be molded into a molded product alone and can be molded into a sheet or film, but it should be used by blending with a substantially linear linear PAS resin. You can also.
- the substantially linear linear PAS resin is a polymer well known in the art.
- the linear PAS resin has a melt viscosity of usually 20 to 450 Pa ⁇ s, preferably 65 to 250 Pa ⁇ s, more preferably 70 to 220 Pa ⁇ s, measured at a temperature of 310 ° C. and a shear rate of 1200 sec ⁇ 1.
- a PPS resin is desirable.
- a resin composition can be prepared by blending 50 parts by mass or more, preferably 100 to 1000 parts by mass, more preferably 110 to 500 parts by mass of a branched PAS resin with respect to 100 parts by mass of the linear PAS resin.
- Various additives such as various organic or inorganic fillers, stabilizers such as antioxidants and heat stabilizers, lubricants, mold release agents, and colorants can be added to the resin composition.
- the whiteness was measured as follows. That is, the polymer was heated and melted with a hot press heated to 320 ° C. for 10 minutes, then solidified by pressing at 40 ° C. for 5 minutes to produce a sheet, and the obtained sheet was annealed at 150 ° C. for 30 minutes. Using this sheet as a sample, the color tone was measured by a standard light C and reflected light measurement method using a “color / color difference meter CR-200” manufactured by Minolta Co., Ltd. Prior to the measurement, calibration was performed using a standard white plate. Three points were measured for each sample, and the average value was calculated.
- melt stability was determined from the results of measurement using the measuring instrument used for (1) measurement of melt viscosity.
- the polymer sample was introduced into the apparatus and held for 5 minutes, and then the melt viscosity at a shear rate of 1200 sec ⁇ 1 was measured. Similarly, after holding for 30 minutes, the melt viscosity at a shear rate of 1200 sec ⁇ 1 was measured. The ratio of the melt viscosity after holding for 30 minutes to the melt viscosity after holding for 5 minutes was calculated.
- Example 1 (Preparation of branched PPS-1) In a 20 liter autoclave, 6000 g of N-methyl-2-pyrrolidone (NMP) and an aqueous solution of sodium hydrosulfide (NaSH; concentration 62 mass%, 28 g of Na 2 S), sodium hydroxide (NaOH; concentration 74 mass%) ) 1180 g was charged. The molar ratio of sodium hydroxide / sulfur source (NaOH / S) was 1.019, and the molar ratio of NaOH / NaSH was 1.034.
- NMP N-methyl-2-pyrrolidone
- NaSH sodium hydroxide
- NaOH sodium hydroxide
- the contents of the autoclave were cooled to 170 ° C., and 3380 g of p-dichlorobenzene (pDCB), 3449 g of NMP, 19.29 g of sodium hydroxide, and 153 g of water were added.
- the ratio (g / mol) of NMP / prepared sulfur source (hereinafter abbreviated as “prepared S”) in the can is 375, pDCB / added S (mol / mol) is 1.047, H 2 O / added S
- the (mol / mol) was 1.50, and the NaOH / charge S (mol / mol) was 1.050.
- the pre-polymerization was started at a temperature of 220 ° C. while stirring at a rotation speed of 250 rpm of the stirrer. Three hours after the start of the pre-polymerization, a part of the reaction solution was sampled and the amount of residual pDCB was measured and calculated. As a result, the conversion rate of pDCB was 90%.
- the mixture is cooled to near room temperature, and the contents of the autoclave are sieved with a screen having a mesh size of 150 ⁇ m, and then washed with water-containing acetone containing 5% by mass of water three times.
- the washed granular branched PPS resin (branched PPS-1) was obtained.
- the granular PPS was dried at 105 ° C. for 13 hours.
- the granular branched PPS-1 thus obtained had an average particle diameter of 480 ⁇ m and a melt viscosity of 185 Pa ⁇ s.
- Table 1 shows the results of measurement of the shear rate dependence of melt viscosity, melt stability, whiteness, and maximum draft ratio. The melting point was 277 ° C., and the yield was 93.5%.
- Example 2 (Preparation of branched PPS-2) The addition of TCB is not in the latter stage of the pre-polymerization but is added together with pDCB in the charging step, and in order to adjust the melt viscosity to PPS-1, the amount of pDCB is adjusted so that pDCB / charging S (mol / mol) is 1.045.
- a granular branched polymer was obtained in the same manner as in Example 1 except that the amount was reduced so as to be.
- the granular branched PPS-2 thus obtained had an average particle diameter of 510 ⁇ m and a melt viscosity of 177 Pa ⁇ s.
- Table 1 shows the results of measurement of the shear rate dependence of melt viscosity, melt stability, whiteness, and maximum draft ratio. The melting point was 279 ° C., and the yield was 94.0%.
- the branched PPS of Examples 1 and 2 which is the branched PAS resin of the present invention, has excellent spinnability, and uses a melt spinneret having a temperature of 310 ° C., 36 holes, and a hole diameter of 0.25 mm.
- a melt spinneret having a temperature of 310 ° C., 36 holes, and a hole diameter of 0.25 mm.
- the branched PAS resin and the method for producing the branched PAS resin of the present invention can be spun without impairing the functional balance such as heat resistance, chemical resistance, flame retardancy, mechanical strength, electrical properties, and dimensional stability.
- the functional balance such as heat resistance, chemical resistance, flame retardancy, mechanical strength, electrical properties, and dimensional stability.
- stable molding is possible, and it is possible to provide a PAS resin with excellent operability.
- the branched PAS resin of the present invention can be spun at a high speed without thread breakage without causing contamination in resin discharge holes such as nozzles, so that it can be used for various textile products such as bag filters. Useful as a filter cloth.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Textile Engineering (AREA)
- Polymers With Sulfur, Phosphorus Or Metals In The Main Chain (AREA)
- Artificial Filaments (AREA)
Abstract
Description
(a)温度310℃、剪断速度1200sec-1で測定した溶融粘度が65~450Pa・s;
(b)温度310℃、吐出速度0.05m/minで測定した最大ドラフト比が6500以上;及び
(c)白色度が65以上;
を有する分岐状PAS樹脂が提供される。
を有する前記の分岐状PAS樹脂が提供される。
を有する前記の分岐状PAS樹脂が提供される。
本発明では、硫黄源として、アルカリ金属硫化物またはアルカリ金属水硫化物もしくはこれらの混合物を使用する。硫黄源として、硫化水素も使用することができる。
本発明の製造方法では、水分を含有する有機アミド溶媒中で、アルカリ金属水硫化物を含有する硫黄源とジハロ芳香族化合物とを、アルカリ金属水酸化物の存在下に重合させる方法を採用することが好ましい。
本発明で使用されるジハロ芳香族化合物は、芳香環に直接結合した2個のハロゲン原子を有するジハロゲン化芳香族化合物である。ジハロ芳香族化合物の具体例としては、例えば、o-ジハロベンゼン、m-ジハロベンゼン、p-ジハロベンゼン、ジハロトルエン、ジハロナフタレン、メトキシ-ジハロベンゼン、ジハロビフェニル、ジハロ安息香酸、ジハロジフェニルエーテル、ジハロジフェニルスルホン、ジハロジフェニルスルホキシド、ジハロジフェニルケトンが挙げられる。これらのジハロ芳香族化合物は、それぞれ単独で、あるいは2種以上を組み合わせて使用することができる。
本発明では、PAS樹脂に分岐状構造を導入するために、分子中に3個以上のハロゲン置換基を有するポリハロ芳香族化合物(以下、単に「ポリハロ芳香族化合物」ということがある。)を使用する。ハロゲン置換基は、通常、ハロゲン原子が直接芳香環に結合したものである。ハロゲン原子とは、フッ素、塩素、臭素、及びヨウ素の各原子を指し、同一のポリハロ芳香族化合物において、複数のハロゲン原子は、同じでも異なっていてもよい。
生成PAS樹脂に特定構造の末端を形成したり、あるいは重合反応や分子量を調節したりするために、モノハロ化合物を併用することができる。モノハロ化合物は、モノハロ芳香族化合物だけではなく、モノハロ脂肪族化合物も使用することができる。
本発明では、脱水反応及び重合反応の溶媒として、非プロトン性極性有機溶媒である有機アミド溶媒を用いる。有機アミド溶媒は、高温でアルカリに対して安定なものが好ましい。
本発明では、重合反応を促進させるために、必要に応じて各種重合助剤を用いることができる。重合助剤の具体例としては、一般にPAS樹脂の重合助剤として公知の有機スルホン酸金属塩、ハロゲン化リチウム、水、有機カルボン酸金属塩、リン酸アルカリ金属塩等が挙げられ、これらを単独または混合物として使用することができる。ここで有機カルボン酸金属塩としては、アルカリ金属カルボン酸塩、例えば、酢酸リチウム、酢酸ナトリウム、酢酸カリウム、プロピオン酸ナトリウム、吉草酸リチウム、安息香酸リチウム、安息香酸ナトリウム、フェニル酢酸ナトリウム、p-トルイル酸カリウム、及びこれらの混合物を挙げることができる。アルカリ金属カルボン酸塩の中でも、安価で入手しやすいことから、特に酢酸ナトリウムが好ましく用いられる。重合助剤の使用量は、用いる化合物の種類により異なるが、仕込み硫黄源1モルに対し、一般に0.01~10モルの範囲であり、好ましくは0.1~2モル、より好ましくは0.2~1.8モル、特に好ましくは0.3~1.7モルの範囲である。重合助剤が、有機スルホン酸金属塩、ハロゲン化リチウムまたは有機カルボン酸金属塩である場合の使用量の上限は、更に1モル以下、特に0.8モル以下が好ましい。重合助剤の添加時期は任意の時期でよい。すなわち、後述する脱水工程、仕込み工程、重合工程の時、またはそれらの前に添加することができる。
本発明では、相分離剤の使用は必須ではないが、耐熱性や機械強度等の性質に優れ、かつ、曳糸性などの成形性に優れる分岐状PAS樹脂を得るためには、相分離剤を使用することが好ましい。相分離剤としては、酢酸ナトリウム、酢酸リチウム、プロピオン酸リチウム、安息香酸リチウムなどのアルカリ金属カルボン酸塩、及び水など、この技術分野で相分離剤として機能することが知られている物質を用いることができる。アルカリ金属カルボン酸塩は、前記の有機カルボン酸金属塩に含まれるものであり、重合助剤としても使用されるが、ここでは、後に詳述する後段重合工程で相分離剤として機能し得る量で用いられる。これらの相分離剤の中でも、コストが安価で、後処理が容易な水、または水と酢酸ナトリウムとの組み合わせが好ましい。相分離剤の使用量は、仕込み硫黄源1モルに対し、通常0.01~10モルとなる範囲である。相分離剤の一部は、重合の仕込み時から共存していても構わないが、重合反応の途中で相分離剤を添加して、相分離を形成するのに十分な量に調整することが望ましい。
本発明の分岐状PAS樹脂の製造方法は、有機アミド溶媒中で、硫黄源とジハロ芳香族化合物とを、分子中に3個以上のハロゲン置換基を有するポリハロ芳香族化合物の存在下に重合させる分岐状PAS樹脂の製造方法である。
(1)有機アミド溶媒、アルカリ金属水硫化物を含む硫黄源、及びアルカリ金属水酸化物を含有する混合物を加熱して、該混合物を含有する系内から水分を含む留出物の少なくとも一部を系外に排出する脱水工程1;
(2)脱水工程で系内に残存する混合物とジハロ芳香族化合物とを混合して、有機アミド溶媒、硫黄源(仕込み硫黄源)、アルカリ金属水酸化物、水分、及びジハロ芳香族化合物を含有する仕込み混合物を調製する仕込み工程2;
(3)仕込み混合物を170~270℃の温度に加熱することにより、水分を含有する有機アミド溶媒中で、硫黄源とジハロ芳香族化合物とを重合反応させ、ジハロ芳香族化合物の転化率が30%以上となった時点で、重合反応混合物中に、仕込み硫黄源1モル当り0.0001~0.01モルのポリハロ芳香族化合物を添加し、同時にまたはその後更に、相分離剤を添加する前段重合工程3;並びに
(4)240~290℃の温度で重合反応を継続する後段重合工程4;
を含む分岐状PAS樹脂の製造方法である。
硫黄源は、水和水(結晶水)などの水分を含んでいることが多い。硫黄源及びアルカリ金属水酸化物を水性混合物として使用する場合には、媒体として水を含有している。硫黄源とジハロ芳香族化合物との重合反応は、重合反応系内に存在する水分量によって影響を受ける。そこで、一般に、重合工程前に脱水工程を配置して、重合反応系内の水分量を調節している。
仕込み工程では、脱水工程で系内に残存する混合物とジハロ芳香族化合物とを混合して、有機アミド溶媒、硫黄源(仕込み硫黄源)、アルカリ金属水酸化物、水分、及びジハロ芳香族化合物を含有する仕込み混合物を調製する。一般に、脱水工程において各成分の含有量及び量比が変動するため、仕込み工程での各成分量の調整は、脱水工程で得られた混合物中の各成分の量を考慮して行う必要がある。
本発明の分岐状PAS樹脂の製造方法では、仕込み混合物を170~290℃の温度に加熱することにより、水分を含有する有機アミド溶媒中で、硫黄源とジハロ芳香族化合物とを、仕込み硫黄源1モル当り0.0001~0.01モルのポリハロ芳香族化合物の存在下に重合反応させる。重合助剤を適宜の段階で添加して重合反応を行うことが好ましい。
転化率=〔DHA仕込み量(モル)-DHA残存量(モル)〕/〔DHA仕込み量(モル)-DHA過剰量(モル)〕 (式1)
により転化率を算出することができる。
転化率=〔DHA仕込み量(モル)-DHA残存量(モル)〕/〔DHA仕込み量(モル))〕 (式2)
により転化率を算出することができる。
前段重合工程でポリハロ芳香族化合物と相分離剤とを添加した後、240℃以上、好ましくは245℃以上の温度に昇温する。
重合反応後の後処理は、常法に従って行うことができる。例えば、重合反応の終了後、重合反応混合物を冷却すると生成ポリマーを含むスラリーが得られる。冷却したスラリーをそのまま、あるいは水などで希釈してから、濾別し、洗浄と濾過を繰り返し、最後に乾燥することにより、分岐状PAS樹脂を回収することができる。
本発明の製造方法によれば、重合反応後、必要に応じて生成ポリマーの粉砕工程を配置して、下記特性(a)~(c)、更に、特性(d)及び(e)を有する分岐状ポリアリーレンスルフィド樹脂を得ることができる。
(a)温度310℃、剪断速度1200sec-1で測定した溶融粘度が65~450Pa・s(以下、単に「溶融粘度」という。)、
(b)温度310℃、吐出速度0.05m/minで測定した最大ドラフト比が6500以上、
(c)白色度が65以上、
(d)温度310℃、剪断速度1200sec-1で測定した溶融粘度に対する、温度310℃、剪断速度200sec-1で測定した溶融粘度の比である溶融粘度の剪断速度依存度が1.4~2.6(以下、単に「溶融粘度の剪断速度依存度」という。)、
(e)温度310℃、剪断速度1200sec-1において5分間保持後の溶融粘度に対する、温度310℃、剪断速度1200sec-1において30分間保持後の溶融粘度の比である溶融安定性(以下、単に「溶融安定性」という。)が0.85~1.30。
本発明の分岐状PAS樹脂は、温度310℃、剪断速度1200sec-1で測定した溶融粘度が65~450Pa・sの範囲内の溶融粘度を有するものである。好ましくは70~300Pa・s、より好ましくは75~250Pa・s、特に好ましくは77~200Pa・sの範囲内である。本発明の分岐状PAS樹脂を繊維として使用する場合には、耐熱性や強度等の物性と曳糸性等の成形性を高度にバランスさせる上で、分岐状PAS樹脂の溶融粘度を、好ましくは70~250Pa・s、より好ましくは75~220Pa・s、特に好ましくは77~190Pa・sの範囲内とする。分岐状PAS樹脂の溶融粘度が高すぎると、より高い温度で成形することが必要となり、その結果、溶融成形時にゲルが発生し、安定な成形性、特に、曳糸性が低下する。なお、架橋型PAS樹脂においては、溶融粘度が上記の範囲を満足するようにさせると、架橋が進み、曳糸性が低下したり、褐色に着色したりする。分岐状PAS樹脂の溶融粘度が低すぎると、強度等の物性や曳糸性等の成形性が劣ったものとなる。
本発明の分岐状PAS樹脂は、温度310℃、吐出速度0.05m/minで測定した最大ドラフト比が6500以上の範囲内のものであり、好ましくは6800以上、より好ましくは7000以上、より好ましくは8000以上、特に好ましくは9500以上の範囲内のものである。最大ドラフト比が前記範囲内にあることによって、優れた成形性、特に曳糸性が得られ、この結果、該分岐状PAS樹脂から成る成形品、特に、繊維は、耐熱性や強度等の物性と成形性が高度にバランスされたものとなる。すなわち、最大ドラフト比が小さすぎると、繊維の糸切れや糸斑が発生し繊維の表面性が損なわれたり、安定した紡糸ができない。最大ドラフト比の上限は、特にないが、余りに大きすぎると、二次加工する場合等に加工性が劣ることがあるので、通常、20000以下、好ましくは18000以下、より好ましくは15000以下の範囲とするとよい。
本発明の分岐状PAS樹脂は、白色度が65以上のものである。白色度は、好ましくは68以上、より好ましくは70以上、特に好ましくは72以上の範囲内のものである。PASの白色度が小さすぎると、溶融成形品の色調が褐色になったり、色むらが生じたりするので、特に繊維製品の場合、不都合が大きい。PASの白色度が大きいと、色調に優れた溶融成形品を得ることができることに加えて、溶融成形品を任意の色に着色することが容易となるので、白色度の上限は特にないが、通常85以内である。従来の熱架橋型のPAS樹脂の場合は、熱履歴を受ける結果、着色が著しい。
本発明の分岐状PAS樹脂は、温度310℃、剪断速度1200sec-1で測定した溶融粘度に対する、温度310℃、剪断速度200sec-1で測定した溶融粘度の比である溶融粘度の剪断速度依存度が1.4~2.6の範囲内のものであることが好ましい。溶融粘度の剪断速度依存度は、好ましくは1.5~2.5、より好ましくは1.55~2.4、特に好ましくは1.6以上2.2未満の範囲内である。溶融粘度の剪断速度依存度が小さすぎると、溶融成形時に弾性が不足し、ダイスウェルが小さくなり、保形性が劣り、繊維を形成する場合には、糸切れが生じやすく、安定な曳糸性や高いドラフト比を得ることが困難となる。溶融粘度の剪断速度依存度が大きすぎると、溶融成形時の弾性が大きくなりすぎ、ダイスウェルが大きくなり、成形物の寸法精度が低下し、繊維を形成する場合には、均一な紡糸をすることが困難となり、安定な曳糸性や高いドラフト比を得ることが困難となる。
本発明の分岐状PAS樹脂は、温度310℃、剪断速度1200sec-1において5分間保持後の溶融粘度に対する、温度310℃、剪断速度1200sec-1において30分間保持後の溶融粘度の比である溶融安定性が0.85~1.30の範囲内であることが好ましく、より好ましくは0.87~1.10、特に好ましくは0.90~1.05の範囲内のものである。溶融安定性が小さすぎる、または大きすぎると、溶融成形時に樹脂の粘度変化が生じるため、安定な溶融成形が困難となり、繊維を形成する場合には、糸切れが生じやすく、安定な曳糸性や高いドラフト比を得ることが困難となる。
本発明の分岐状PAS樹脂は、溶融成形可能なものである。融点が、好ましくは270~310℃、より好ましくは272~300℃、特に好ましくは273~295℃の範囲であると、溶融成形品の製造や紡糸に適している。融点は、示差走査熱量計(DSC)を用いて、試料を、窒素雰囲気中、30℃で3分間保持した後、10℃/minの昇温速度で340℃まで昇温し、測定したものである。
本発明の分岐状PAS樹脂は、更に、平均粒子径が好ましくは50~2500μmの範囲内であることが好ましく、より好ましくは60~2000μm、特に好ましくは75~1500μmの範囲内である。本発明の分岐状PAS樹脂を繊維として使用する場合には、安定した溶融押出性や曳糸性を得る上で、分岐状PAS樹脂の平均粒子径は、好ましくは100~2000μm、より好ましくは120~1800μm、更に好ましくは150~1700μm、特に好ましくは160~1500μmの範囲内である。分岐状PAS樹脂の平均粒子径を調整するために、重合により得られた分岐状PAS樹脂を粉砕及び/または分級してもよい。
乾燥ポリマー約20gを用いて、東洋精機株式会社製キャピログラフ1Dにより溶融粘度を測定した。この際、キャピラリーは、d=1.0mm、L=10mmのスリットダイを使用し、設定温度は、310℃とした。ポリマー試料を装置に導入し、5分間保持した後、剪断速度1200sec-1での溶融粘度を測定した。
最大ドラフト比は、乾燥ポリマー約20gを用いて、東洋精機株式会社製キャピログラフ1Dを用いて測定した。この際、キャピラリーは、d=1.0mm、L=10mmのスリットダイを使用し、乾燥ポリマーをバレル径9.55mmのバレル内に充填して、310℃で溶融し、吐出速度(V0)0.05mm/minで吐出した。ダイから46cm下方に直径40mmの支点ローラを2つ配置し、その後に巻き取りロールを置き、巻き取り速度を1分間で5m/分から500m/分まで変化させて、吐出物が破断したときの速度VSDとV0との比VSD/V0(最大ドラフト比)を算出した。この操作を60分間繰り返して、20分から40分の間の5回の最大ドラフト比の平均値を求め、サンプルの最大ドラフト比とした。なお、装置設定上の最大ドラフト比の上限は、10965であった。
白色度の測定は、以下のとおり行った。すなわち、ポリマーを、320℃に加熱したホットプレスで10分間加熱溶融した後、40℃で5分間プレスにより固化してシートを作製し、得られたシートを150℃で30分間アニーリングした。このシートを試料とし、ミノルタ株式会社製「色彩色差計CR-200」を用いて、標準光C、反射光測定法により色調の測定を行った。測定に先立ち、標準白色板により較正を行った。各試料について3点ずつ測定を行い、その平均値を算出した。
溶融粘度の剪断速度依存度は、(1)溶融粘度の測定に用いた測定器を用いて、剪断速度1200sec-1及び剪断速度200sec-1での溶融粘度を測定した結果から求めた。すなわち、設定温度310℃、剪断速度1200sec-1での溶融粘度に対する、設定温度310℃、剪断速度200sec-1での溶融粘度の比を算出した。
溶融安定性は、(1)溶融粘度の測定に用いた測定器を用いて、測定した結果から求めた。ポリマー試料を装置に導入し、5分間保持した後、剪断速度1200sec-1での溶融粘度を測定した。同様に、30分間保持した後、剪断速度1200sec-1での溶融粘度を測定した。5分間保持後の溶融粘度に対する、30分間保持後の溶融粘度の比を算出した。
融点は、示差走査熱量計(DSC)を用いて、試料を、窒素雰囲気中、30℃で3分間保持した後、10℃/minの昇温速度で340℃まで昇温し、吸熱ピーク温度として測定したものである。
JIS K-0069に従い、所定目開きの篩を使用して篩い分け法により、粒径分布を求め、平均粒子径を算出した。篩い分けは、FRITSCH社製電磁式篩振盪機(商品名「Analysette 3」)を使用して、振とう時間=15分間、AMPLITUDE=6、INTERVAL=6で、実施した。
反応混合物中に残存するジハロ芳香族化合物の量をガスクロマトグラフィにより求め、その残存量とジハロ芳香族化合物の仕込み量と硫黄源の仕込み量に基づいて、ジハロ芳香族化合物の転化率を算出した。
20リットルのオートクレーブに、N-メチル-2-ピロリドン(NMP)6000gと水硫化ナトリウム水溶液(NaSH;濃度62質量%、Na2Sを28g含む。)2000g、水酸化ナトリウム(NaOH;濃度74質量%)1180gを仕込んだ。水酸化ナトリウム/硫黄源(NaOH/S)のモル比は1.019であり、NaOH/NaSHのモル比は1.034であった。
TCBの添加を前段重合の後期でなく、pDCBと一緒に仕込み工程において添加するとともに、溶融粘度をPPS-1に合わせるため、pDCBの量を、pDCB/仕込みS(モル/モル)が1.045となるように少なくしたこと以外は、実施例1と同様にして粒状の分岐状ポリマーを得た。こうして得られた粒状の分岐状PPS-2は、平均粒子径510μm、溶融粘度177Pa・sであった。溶融粘度の剪断速度依存度、溶融安定性、白色度、及び最大ドラフト比を測定した結果を表1に示す。なお、融点は279℃であり、収率は94.0%であった。
TCBを使用しなかったこと、及び、溶融粘度をPPS-1、PPS-2に合わせるために、pDCBの量を少なくして、pDCB/仕込みS(モル/モル)が1.025となるようにしたこと以外は、実施例1と同様にして、粒状のポリマーを得た。得られた直鎖型PPS-Lは、平均粒子径450μm、溶融粘度180Pa・sであった。溶融粘度の剪断速度依存度、溶融安定性、白色度、及び最大ドラフト比を測定した結果を表1に示す。なお、収率は87%であった。
Claims (21)
- 下記の特性(a)~(c):
(a)温度310℃、剪断速度1200sec-1で測定した溶融粘度が65~450Pa・s;
(b)温度310℃、吐出速度0.05m/minで測定した最大ドラフト比が6500以上;及び
(c)白色度が65以上;
を有する分岐状ポリアリーレンスルフィド樹脂。 - 更に特性(d):
(d)温度310℃、剪断速度1200sec-1で測定した溶融粘度に対する、温度310℃、剪断速度200sec-1で測定した溶融粘度の比である溶融粘度の剪断速度依存度が1.4~2.6;
を有する請求項1記載の分岐状ポリアリーレンスルフィド樹脂。 - 更に特性(e):
(e)温度310℃、剪断速度1200sec-1において5分間保持後の溶融粘度に対する、温度310℃、剪断速度1200sec-1において30分間保持後の溶融粘度の比である溶融安定性が0.85~1.30;
を有する請求項1記載の分岐状ポリアリーレンスルフィド樹脂。 - 有機アミド溶媒中で、硫黄源とジハロ芳香族化合物とを、仕込み硫黄源1モル当り0.0001~0.01モルの分子中に3個以上のハロゲン置換基を有するポリハロ芳香族化合物の存在下に、170~290℃の温度で重合反応させる、
下記の特性(a)~(c):
(a)温度310℃、剪断速度1200sec-1で測定した溶融粘度が65~450Pa・s;
(b)温度310℃、吐出速度0.05m/minで測定した最大ドラフト比が6500以上;及び
(c)白色度が65以上;
を有する分岐状ポリアリーレンスルフィド樹脂の製造方法。 - 分岐状ポリアリーレンスルフィド樹脂が、更に特性(d):
(d)温度310℃、剪断速度1200sec-1で測定した溶融粘度に対する、温度310℃、剪断速度200sec-1で測定した溶融粘度の比である溶融粘度の剪断速度依存度が1.4~2.6;
を有する請求項4記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。 - 分岐状ポリアリーレンスルフィド樹脂が、更に特性(e):
(e)温度310℃、剪断速度1200sec-1において5分間保持後の溶融粘度に対する、温度310℃、剪断速度1200sec-1において30分間保持後の溶融粘度の比である溶融安定性が0.85~1.30;
を有する請求項4記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。 - 前記重合反応が、有機アミド溶媒中で、硫黄源、ジハロ芳香族化合物、及び、仕込み硫黄源1モル当り0.0001~0.01モルのポリハロ芳香族化合物を、170~290℃の温度で重合反応させる請求項4乃至6のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 前記重合反応が、有機アミド溶媒中で、硫黄源とジハロ芳香族化合物とを170~270℃の温度で重合反応させ、ジハロ芳香族化合物の転化率が30%以上となった時点で、重合反応混合物中に、仕込み硫黄源1モル当り0.0001~0.01モルのポリハロ芳香族化合物を添加し、同時にまたはその後更に、相分離剤を添加し、次いで、重合反応混合物を昇温し、240~290℃の温度で重合反応を継続する請求項4乃至6のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 下記の工程1~4:
(1)有機アミド溶媒、アルカリ金属水硫化物を含む硫黄源、及びアルカリ金属水酸化物を含有する混合物を加熱して、該混合物を含有する系内から水分を含む留出物の少なくとも一部を系外に排出する脱水工程1;
(2)脱水工程で系内に残存する混合物とジハロ芳香族化合物とを混合して、有機アミド溶媒、硫黄源、アルカリ金属水酸化物、水分、及びジハロ芳香族化合物を含有する仕込み混合物を調製する仕込み工程2;
(3)仕込み混合物を170~270℃の温度に加熱することにより、水分を含有する有機アミド溶媒中で、硫黄源とジハロ芳香族化合物とを重合反応させ、ジハロ芳香族化合物の転化率が30%以上となった時点で、重合反応混合物中に、仕込み硫黄源1モル当り0.0001~0.01モルのポリハロ芳香族化合物を添加し、同時にまたはその後更に、相分離剤を添加する前段重合工程3;並びに
(4)240~290℃の温度で重合反応を継続する後段重合工程4;
を含む請求項4乃至6のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。 - 脱水工程1において、仕込み硫黄源1モル当たり0.01~2モルの水分量となるまで脱水する請求項9記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 仕込み工程2において、仕込み硫黄源1モル当りの各成分の割合が、アルカリ金属水酸化物が0.95~1.09モル、水分が0.01~2モル、及びジハロ芳香族化合物が0.950~1.200モルとなるように、これら各成分を含有する仕込み混合物を調製する請求項9記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 前段重合工程3において、ジハロ芳香族化合物の転化率が30~98%となった時点で、重合反応混合物中に、ポリハロ芳香族化合物及び相分離剤を添加する請求項9記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 前段重合工程3において、相分離剤の添加を、ポリハロ芳香族化合物を添加した後、ジハロ芳香族化合物の転化率が95%になるまでの間に行う請求項12記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 前段重合工程3において、ジハロ芳香族化合物の転化率が30%以上となった時点で、重合反応混合物中に、重合反応混合物中の水分量が仕込み硫黄源1モル当り2モル超過10モル以下となるように、相分離剤として水を添加する請求項9記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- ジハロ芳香族化合物の転化率が80%以上となった時点で、重合反応混合物中に、ポリハロ芳香族化合物を添加する請求項8記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- さらに重合助剤を添加して重合反応を行う請求項4乃至6のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 前記重合助剤が、水及び有機カルボン酸金属塩である請求項16記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 重合反応により得られたポリアリーレンスルフィド樹脂を、水を1~30質量%の割合で含有する親水性有機溶剤で洗浄する洗浄工程を複数配置する請求項4乃至6のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂の製造方法。
- 請求項1乃至3のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂から成る溶融成形品。
- 請求項1乃至3のいずれか1項に記載の分岐状ポリアリーレンスルフィド樹脂から成る繊維。
- 請求項20記載の繊維を含有するろ布。
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP11765381.6A EP2554569A4 (en) | 2010-03-31 | 2011-03-22 | BRANCHED POLYARYLENE SULFIDE RESIN AND PROCESS FOR PRODUCING THE SAME |
| JP2012509397A JP5832422B2 (ja) | 2010-03-31 | 2011-03-22 | 分岐状ポリアリーレンスルフィド樹脂及びその製造方法 |
| US13/638,227 US9255350B2 (en) | 2010-03-31 | 2011-03-22 | Branched poly(arylene sulfide) resin and method for producing same |
| CN201180017367.9A CN102822239B (zh) | 2010-03-31 | 2011-03-22 | 支化状聚亚芳基硫醚树脂及其制造方法 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2010082725 | 2010-03-31 | ||
| JP2010-082725 | 2010-03-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011125480A1 true WO2011125480A1 (ja) | 2011-10-13 |
Family
ID=44762435
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2011/056762 Ceased WO2011125480A1 (ja) | 2010-03-31 | 2011-03-22 | 分岐状ポリアリーレンスルフィド樹脂及びその製造方法 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US9255350B2 (ja) |
| EP (1) | EP2554569A4 (ja) |
| JP (1) | JP5832422B2 (ja) |
| CN (1) | CN102822239B (ja) |
| WO (1) | WO2011125480A1 (ja) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9312074B2 (en) | 2012-02-27 | 2016-04-12 | Kemet Electronics Corporation | Solid electrolytic capacitor with interlayer crosslinking |
| JP2017155065A (ja) * | 2016-02-29 | 2017-09-07 | 東レ株式会社 | ポリフェニレンスルフィド樹脂組成物からなる配管部品 |
| US10647818B2 (en) | 2015-01-09 | 2020-05-12 | Kureha Corporation | Polyarylene sulfide production method and polyarylene sulfide |
| WO2021234992A1 (ja) * | 2020-05-22 | 2021-11-25 | 株式会社クレハ | ポリアリーレンスルフィドの製造方法 |
| WO2023074035A1 (ja) * | 2021-10-26 | 2023-05-04 | Dic株式会社 | ポリアリーレンスルフィド樹脂組成物、成形品及びそれらの製造方法 |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9562139B2 (en) | 2013-09-25 | 2017-02-07 | Ticona Llc | Process for forming low halogen content polyarylene sulfides |
| JP6684206B2 (ja) | 2013-09-25 | 2020-04-22 | ティコナ・エルエルシー | ポリアリーレンスルフィドの形成中における塩副生成物の分離 |
| US9587074B2 (en) | 2013-09-25 | 2017-03-07 | Ticona Llc | Multi-stage process for forming polyarylene sulfides |
| WO2015047717A1 (en) | 2013-09-25 | 2015-04-02 | Ticona Llc | Method and system for separation of a polymer from multiple compounds |
| JP2016536377A (ja) | 2013-09-25 | 2016-11-24 | ティコナ・エルエルシー | ポリアリーレンスルフィドを形成するためのスクラビングプロセス |
| US9388283B2 (en) | 2013-09-25 | 2016-07-12 | Ticona Llc | Method of polyarylene sulfide crystallization |
| WO2016133739A1 (en) | 2015-02-19 | 2016-08-25 | Ticona Llc | Method for forming a high molecular weight polyarylene sulfide |
| WO2016133738A1 (en) | 2015-02-19 | 2016-08-25 | Ticona Llc | Method for forming a low viscosity polyarylene sulfide |
| WO2016133740A1 (en) | 2015-02-19 | 2016-08-25 | Ticona Llc | Method of polyarylene sulfide precipitation |
| JP6783242B2 (ja) | 2015-03-25 | 2020-11-11 | ティコナ・エルエルシー | 高溶融粘度のポリアリーレンスルフィドを形成する方法 |
| KR102251791B1 (ko) | 2018-10-26 | 2021-05-13 | 주식회사 엘지화학 | 폴리아릴렌 설파이드의 제조 방법 |
| US11407861B2 (en) | 2019-06-28 | 2022-08-09 | Ticona Llc | Method for forming a polyarylene sulfide |
| JP2023508316A (ja) | 2019-12-20 | 2023-03-02 | ティコナ・エルエルシー | ポリアリーレンスルフィドを形成するための方法 |
| US12024596B2 (en) | 2021-09-08 | 2024-07-02 | Ticona Llc | Anti-solvent technique for recovering an organic solvent from a polyarylene sulfide waste sludge |
| KR20240060812A (ko) | 2021-09-08 | 2024-05-08 | 티코나 엘엘씨 | 폴리아릴렌 설파이드 폐슬러지로부터 유기 용매를 회수하기 위한 추출 기술 |
Citations (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63315655A (ja) | 1987-06-16 | 1988-12-23 | 東レ株式会社 | ポリフェニレンサルファイドメルトブロ−不織布およびその製法 |
| EP0344977A2 (en) | 1988-05-26 | 1989-12-06 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for the preparation of cross-linked polyarylene sulfide |
| JPH037443A (ja) * | 1989-02-28 | 1991-01-14 | Mitsubishi Electric Corp | 認証装置 |
| US5200500A (en) | 1988-05-26 | 1993-04-06 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for the preparation of cross-linked polyarylene sulfide |
| US5268451A (en) | 1988-05-26 | 1993-12-07 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for the preparation of cross-linked polyarylene sulfide |
| JPH07330903A (ja) * | 1994-06-03 | 1995-12-19 | Kureha Chem Ind Co Ltd | ポリアリーレンチオエーテル及びその製造方法 |
| JP2005194312A (ja) * | 2003-12-26 | 2005-07-21 | Kureha Chem Ind Co Ltd | ポリアリーレンスルフィド及びその製造方法 |
| JP2005225931A (ja) * | 2004-02-12 | 2005-08-25 | Kureha Chem Ind Co Ltd | ポリアリーレンスルフィド及びその製造方法 |
| WO2006068159A1 (ja) | 2004-12-21 | 2006-06-29 | Kureha Corporation | 分岐型ポリアリーレンスルフィド樹脂及びその製造方法、並びにその高分子改質剤としての使用 |
| JP2009270230A (ja) | 2008-05-09 | 2009-11-19 | Toyobo Co Ltd | ポリフェニレンサルファイド繊維 |
| JP2009270219A (ja) | 2008-05-07 | 2009-11-19 | Toyobo Co Ltd | 成型加工性の優れたポリフェニレンサルファイド繊維 |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4116947A (en) | 1977-04-29 | 1978-09-26 | Phillips Petroleum Company | Branched arylene sulfide polymer production |
| US4740569A (en) | 1979-08-14 | 1988-04-26 | Phillips Petroleum Company | Arylene sulfide polymer, contacted with polyhaloaromatic compound |
| MY104185A (en) * | 1988-08-31 | 1994-02-28 | Idemitsu Petrochemical Company Ltd | A process for preparing polyarylene sulfides |
| US5266680A (en) | 1989-07-31 | 1993-11-30 | Phillips Petroleum Company | Process for the preparation of poly(arylene sulfide) compositions |
| CA2021177C (en) | 1989-07-31 | 1997-04-01 | Jerry Olin Reed | Process for the preparation of poly(arylene sulfide) compositions |
| JP3540583B2 (ja) * | 1997-12-16 | 2004-07-07 | 出光石油化学株式会社 | ポリアリーレンスルフィド及びその製造方法 |
| JP2000281786A (ja) * | 1999-03-30 | 2000-10-10 | Toray Ind Inc | ポリフェニレンスルフィド樹脂(組成物)の製造方法 |
| EP1505100A4 (en) * | 2002-05-08 | 2007-04-04 | Idemitsu Kosan Co | METHOD FOR CONTINUOUS PRODUCTION OF BRANCHED POLYARYLENEULFIDES |
| JP3989785B2 (ja) | 2002-07-18 | 2007-10-10 | 株式会社クレハ | ポリアリーレンスルフィドの製造方法 |
| CN101084274B (zh) * | 2004-12-21 | 2010-06-16 | 宝理塑料株式会社 | 聚亚芳基硫醚树脂组合物及其制造方法 |
| US8680230B2 (en) | 2008-07-22 | 2014-03-25 | Kureha Corporation | Production process of poly(arylene sulfide) whose content of terminal halogen group has been reduced |
-
2011
- 2011-03-22 JP JP2012509397A patent/JP5832422B2/ja not_active Expired - Fee Related
- 2011-03-22 WO PCT/JP2011/056762 patent/WO2011125480A1/ja not_active Ceased
- 2011-03-22 US US13/638,227 patent/US9255350B2/en not_active Expired - Fee Related
- 2011-03-22 CN CN201180017367.9A patent/CN102822239B/zh not_active Expired - Fee Related
- 2011-03-22 EP EP11765381.6A patent/EP2554569A4/en not_active Withdrawn
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS63315655A (ja) | 1987-06-16 | 1988-12-23 | 東レ株式会社 | ポリフェニレンサルファイドメルトブロ−不織布およびその製法 |
| JP2514832B2 (ja) | 1988-05-26 | 1996-07-10 | 呉羽化学工業株式会社 | ポリアリ―レンスルフィド架橋重合体の製造方法 |
| US5200500A (en) | 1988-05-26 | 1993-04-06 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for the preparation of cross-linked polyarylene sulfide |
| US5268451A (en) | 1988-05-26 | 1993-12-07 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for the preparation of cross-linked polyarylene sulfide |
| EP0344977A2 (en) | 1988-05-26 | 1989-12-06 | Kureha Kagaku Kogyo Kabushiki Kaisha | Process for the preparation of cross-linked polyarylene sulfide |
| JPH037443A (ja) * | 1989-02-28 | 1991-01-14 | Mitsubishi Electric Corp | 認証装置 |
| JPH07330903A (ja) * | 1994-06-03 | 1995-12-19 | Kureha Chem Ind Co Ltd | ポリアリーレンチオエーテル及びその製造方法 |
| JP2005194312A (ja) * | 2003-12-26 | 2005-07-21 | Kureha Chem Ind Co Ltd | ポリアリーレンスルフィド及びその製造方法 |
| JP2005225931A (ja) * | 2004-02-12 | 2005-08-25 | Kureha Chem Ind Co Ltd | ポリアリーレンスルフィド及びその製造方法 |
| WO2006068159A1 (ja) | 2004-12-21 | 2006-06-29 | Kureha Corporation | 分岐型ポリアリーレンスルフィド樹脂及びその製造方法、並びにその高分子改質剤としての使用 |
| EP1837359A1 (en) | 2004-12-21 | 2007-09-26 | Kureha Corporation | Branched polyarylene sulfide resin, process for producing the same, and use thereof as polymeric modifier |
| JP2009270219A (ja) | 2008-05-07 | 2009-11-19 | Toyobo Co Ltd | 成型加工性の優れたポリフェニレンサルファイド繊維 |
| JP2009270230A (ja) | 2008-05-09 | 2009-11-19 | Toyobo Co Ltd | ポリフェニレンサルファイド繊維 |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US9312074B2 (en) | 2012-02-27 | 2016-04-12 | Kemet Electronics Corporation | Solid electrolytic capacitor with interlayer crosslinking |
| US10647818B2 (en) | 2015-01-09 | 2020-05-12 | Kureha Corporation | Polyarylene sulfide production method and polyarylene sulfide |
| JP2017155065A (ja) * | 2016-02-29 | 2017-09-07 | 東レ株式会社 | ポリフェニレンスルフィド樹脂組成物からなる配管部品 |
| WO2021234992A1 (ja) * | 2020-05-22 | 2021-11-25 | 株式会社クレハ | ポリアリーレンスルフィドの製造方法 |
| JPWO2021234992A1 (ja) * | 2020-05-22 | 2021-11-25 | ||
| KR20230008116A (ko) * | 2020-05-22 | 2023-01-13 | 가부시끼가이샤 구레하 | 폴리아릴렌 설파이드의 제조 방법 |
| JP7394987B2 (ja) | 2020-05-22 | 2023-12-08 | 株式会社クレハ | ポリアリーレンスルフィドの製造方法 |
| KR102778932B1 (ko) | 2020-05-22 | 2025-03-07 | 가부시끼가이샤 구레하 | 폴리아릴렌 설파이드의 제조 방법 |
| WO2023074035A1 (ja) * | 2021-10-26 | 2023-05-04 | Dic株式会社 | ポリアリーレンスルフィド樹脂組成物、成形品及びそれらの製造方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| JP5832422B2 (ja) | 2015-12-16 |
| US9255350B2 (en) | 2016-02-09 |
| US20130022808A1 (en) | 2013-01-24 |
| EP2554569A1 (en) | 2013-02-06 |
| CN102822239A (zh) | 2012-12-12 |
| EP2554569A4 (en) | 2016-09-07 |
| JPWO2011125480A1 (ja) | 2013-07-08 |
| CN102822239B (zh) | 2015-05-13 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5832422B2 (ja) | 分岐状ポリアリーレンスルフィド樹脂及びその製造方法 | |
| JP5221877B2 (ja) | ポリアリーレンスルフィドの製造方法 | |
| US9422400B2 (en) | Granular polyarylene sulfide and process for manufacturing the same | |
| JP4782383B2 (ja) | ポリアリーレンスルフィド及びその製造方法 | |
| CN106164133B (zh) | 聚亚芳基硫醚的制造方法 | |
| US8138302B2 (en) | Polyarylene sulfide and process for producing the same | |
| CN107075117B (zh) | 聚亚芳基硫醚的制造方法以及聚亚芳基硫醚 | |
| EP1586601A1 (en) | Polyarylene sulfide and process for producing the same | |
| KR101213366B1 (ko) | 폴리아릴렌술피드 수지 조성물 및 그의 제조 방법 | |
| JP6306601B2 (ja) | 分岐型ポリアリーレンスルフィド樹脂及びその製造方法、並びにその高分子改質剤としての使用 | |
| WO2016108270A1 (ja) | ポリアリーレンスルフィドの製造方法、及びポリアリーレンスルフィド | |
| JP5189293B2 (ja) | 分岐型ポリアリーレンスルフィド樹脂及びその製造方法、並びにその高分子改質剤としての使用 | |
| KR20200004263A (ko) | 폴리아릴렌 설파이드의 제조 방법 | |
| KR20200004763A (ko) | 폴리아릴렌 설파이드의 제조 방법 | |
| JP2025090050A (ja) | ポリアリーレンスルフィドおよびポリアリーレンスルフィドの製造方法 |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 201180017367.9 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 11765381 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2012509397 Country of ref document: JP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 13638227 Country of ref document: US |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| REEP | Request for entry into the european phase |
Ref document number: 2011765381 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011765381 Country of ref document: EP |