Classifications

• • 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
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
• • 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
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/04—Reinforcing macromolecular compounds with loose or coherent fibrous material
  • C08J5/0405—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres
  • C08J5/042—Reinforcing macromolecular compounds with loose or coherent fibrous material with inorganic fibres with carbon fibres
• • 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
  • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
  • C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
  • C08G65/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols
  • C08G65/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
• • 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
  • C08G65/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
  • C08G65/34—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives
  • C08G65/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols
  • C08G65/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule from hydroxy compounds or their metallic derivatives derived from phenols from phenols (I) and other compounds (II), e.g. OH-Ar-OH + X-Ar-X, where X is halogen atom, i.e. leaving group
  • C08G65/4012—Other compound (II) containing a ketone group, e.g. X-Ar-C(=O)-Ar-X for polyetherketones
• • 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
  • C08J5/00—Manufacture of articles or shaped materials containing macromolecular substances
  • C08J5/18—Manufacture of films or sheets
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
  • C08L71/02—Polyalkylene oxides
• • C—CHEMISTRY; METALLURGY
  • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
  • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
  • C08L71/00—Compositions of polyethers obtained by reactions forming an ether link in the main chain; Compositions of derivatives of such polymers
  • C08L71/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
  • C08L71/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
• • 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
  • C08G2650/00—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule
  • C08G2650/28—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type
  • C08G2650/38—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group
  • C08G2650/40—Macromolecular compounds obtained by reactions forming an ether link in the main chain of the macromolecule characterised by the polymer type containing oxygen in addition to the ether group containing ketone groups, e.g. polyarylethylketones, PEEK or PEK
• • 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
  • C08J2371/00—Characterised by the use of polyethers obtained by reactions forming an ether link in the main chain; Derivatives of such polymers
  • C08J2371/08—Polyethers derived from hydroxy compounds or from their metallic derivatives
  • C08J2371/10—Polyethers derived from hydroxy compounds or from their metallic derivatives from phenols
  • C08J2371/12—Polyphenylene oxides

Definitions

• the present invention relates to aromatic polyethers, compositions, films, powders, pellets, methods for producing composite materials, and composite materials. Specifically, the present invention relates to aromatic polyethers, compositions, films, powders, pellets, methods for producing composite materials, and composite materials having excellent mechanical strength.
• thermosetting resins such as epoxy resins and phenolic resins are generally used as resins for such composite materials.
• thermoplastic resins instead of thermosetting resins.
• Examples of composite materials using aromatic polyether, which is a thermoplastic resin include Patent Documents 1 to 3.
• Patent Document 1 the aromatic polyethers of the prior art including Patent Document 1 have room for further improvement from the viewpoint of improving the mechanical strength, particularly the mechanical strength of composite materials containing continuous fibers and aromatic polyethers. Found.
• One of the objects of the present invention is to provide aromatic polyethers, films, powders, pellets, methods for producing composite materials, and composite materials with excellent mechanical strength.
• aromatic polyethers having specific melting properties are excellent in mechanical strength, and in particular can improve the mechanical strength of composite materials containing continuous fibers and aromatic polyethers. He found the headline and completed the present invention. According to the present invention, the following aromatic polyether and the like can be provided. 1. An aromatic polyether containing a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), MFR 4 [g/10 min] measured after preheating the aromatic polyether at 380° C. for 4 minutes and MFR 30 [g/10 min] measured after preheating the aromatic polyether at 380° C. for 30 minutes and satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1. 2. 2.
• the aromatic polyether according to 1, comprising a structural unit represented by the following formula (3). 3. 3. The aromatic polyether according to 1 or 2, which satisfies one or both of the following conditions (A) and (B). (A) The fluorine atom content a is less than 2 mg/kg. (B) The chlorine atom content b is 2 mg/kg or more. 4. A composition comprising the aromatic polyether according to any one of 1-3. 5. A composition containing an aromatic polyether, wherein the aromatic polyether includes a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), MFR 4 [g/10 min] measured after preheating at 380° C. for 4 minutes and MFR 30 [g/10 min] measured after preheating the composition at 380° C.
• MFR 4 /MFR 30 A composition that satisfies the condition ⁇ 1.1. 6. 6. The composition according to 5, wherein the aromatic polyether contains a structural unit represented by the following formula (3). 7. 7. The composition according to 5 or 6, which satisfies one or both of the following conditions (A) and (B). (A) The fluorine atom content a is less than 2 mg/kg. (B) The chlorine atom content b is 2 mg/kg or more. 8. A film comprising an aromatic polyether according to any one of 1-3 or a composition according to any one of 4-7. 9. A powder comprising the aromatic polyether according to any one of 1-3 or the composition according to any one of 4-7. 10.
• a pellet comprising an aromatic polyether according to any one of 1-3 or a composition according to any one of 4-7.
• the aromatic polyether according to any one of 1 to 3, the composition according to any one of 4 to 7, the film according to 8, the powder according to 9 or the pellet according to 10 aromatic Use for making a composite material comprising polyether and continuous fibres. 13.
• the aromatic polyether according to any one of 1 to 3, the composition according to any one of 4 to 7, the film according to 8, the powder according to 9 or the pellet according to 10, and continuous fibers A method for producing a composite material, comprising producing a composite material using and. 14. 14. The method for producing a composite material according to 13, comprising a step of combining the aromatic polyether, the composition, the film, the powder or the pellets with the continuous fiber. 15. 14. The method for producing a composite material according to 13, comprising pressing the aromatic polyether, the composition, the film, the powder or the pellet, and the continuous fiber under heating. 16.
• a composite material comprising the aromatic polyether according to any one of 1-3 or the composition according to any one of 4-7 and continuous fibers.
• aromatic polyethers compositions, films, powders, pellets, methods for producing composite materials, and composite materials that are excellent in mechanical strength.
• Aromatic polyether The aromatic polyether according to one aspect of the present invention is an aromatic polyether containing a structural unit represented by the following formula (1) and a structural unit represented by the following formula (2), ,
• the MFR 4 [g/10 min] measured after preheating the aromatic polyether at 380° C. for 4 minutes and the MFR 30 [g/10 min] measured after preheating the PEEK at 380° C. for 30 minutes are It satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1.
• an aromatic polyether/continuous fiber composite material when producing an aromatic polyether/continuous fiber composite material, a method of impregnating the gaps between continuous fibers in an aggregate of continuous fibers with a heated and melted aromatic polyether is used. This heating thickens the aromatic polyether and imparts excellent mechanical strength to the aromatic polyether/continuous fiber composite material.
• the MFR 4 and MFR 30 of the aromatic polyether are not particularly limited as long as they satisfy the condition of MFR 4 /MFR 30 ⁇ 1.1.
• the value of MFR4 / MFR30 is 10.0 or less, 8.0 or less, 6.0 or less, 4.0 or less, or 3.0 or less.
• the MFR 4 of the aromatic polyether is 0.0001 to 1500.0 g/10 min, 0.0005 to 500.0 g/10 min, within the range satisfying the condition of MFR 4 /MFR 30 ⁇ 1.1. 0.001 to 100.0 g/10 min, 0.01 to 100.0 g/10 min, 3.5 to 50.0 g/10 min, 5 to 50.0 g/10 min or 5.0 to 15.0 g/10 min.
• the MFR 30 of the aromatic polyether is 0.0001 to 1500.0 g/10 min, 0.0005 to 500.0 g/10 min, within the range satisfying the condition of MFR 4 /MFR 30 ⁇ 1.1, 0.001 to 100.0 g/10 min, 0.01 to 100.0 g/10 min or 0.1 to 12.0 g/10 min.
• MFR 4 and MFR 30 are values measured by the method described in Examples.
• the aromatic polyether satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1
• the aromatic polyether alone (completely isolated and purified) has MFR 4 /. It refers to the case where the condition of MFR 30 ⁇ 1.1 is satisfied, or the case where the aromatic polyether satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1 together with other coexisting components.
• the aromatic polyether constitutes the composition together with the other coexisting components, and the composition containing the aromatic polyether has an MFR 4 /MFR 30 ⁇ 1.1. It can be said that the condition is satisfied.
• the aromatic polyether can satisfy the condition of MFR 4 /MFR 30 ⁇ 1.1 by adjusting the amount of base coexisting in the aromatic polyether.
• the base may be blended with the aromatic polyether as an additive, or potassium carbonate as the base used during the synthesis of the aromatic polyether may be added to the aromatic polyether. may be intentionally left in the In one embodiment, in 100 parts by mass of aromatic polyether (the above "100 parts by mass” is the amount of aromatic polyether alone and does not include the amount of other components such as potassium carbonate), 0 0.02 to 0.18 parts by weight of potassium carbonate may be added.
• the amount of potassium carbonate added is more preferably 0.02 to 0.09 parts by mass, 0.02 to 0.06 parts by mass, or 0.02 to 0.04 parts by mass. Thereby, the condition of MFR 4 /MFR 30 ⁇ 1.1 can be satisfactorily satisfied.
• the pH during washing of the aromatic polyether is adjusted to more than 7.0 and 10 or less, more preferably 8.0 to 10, and even more preferably 8.0 to 9.5.
• "at the time of washing the aromatic polyether” is, for example, at the time of washing after synthesizing the aromatic polyether. be. Thereby, the condition of MFR 4 /MFR 30 ⁇ 1.1 can be satisfactorily satisfied.
• the condition of MFR 4 /MFR 30 ⁇ 1.1 is preferably satisfied by the aromatic polyether having a pH of more than 7.0 and not more than 10 when the aromatic polyether is pulverized and impregnated with water. be able to.
• the method for obtaining an aromatic polyether satisfying the condition of MFR 4 /MFR 30 ⁇ 1.1 is not limited to a method using a coexisting component such as a base. can be crosslinked (for example, under heating at 380° C.), a method of introducing a functional group, or the like can also be used. Functional groups to be introduced into the aromatic polyether can be selected so that the aromatic polyether satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1.
• the aromatic polyether satisfies one or both of conditions (A) and (B) below.
• the fluorine atom content a is less than 2 mg/kg.
• the chlorine atom content b is 2 mg/kg or more.
• the "fluorine atom content a" is the ratio of the fluorine atom mass [mg] to the total mass [kg] of the aromatic polyether (excluding other coexisting components) and other coexisting components. be.
• the "chlorine atom content b" is the ratio of the mass [mg] of chlorine atoms to the total mass [kg] of the aromatic polyether (not including other coexisting components) and other coexisting components. be.
• the fluorine atom content a in the aromatic polyether is less than 2 mg/kg.
• the lower limit is not particularly limited, and may be 0 mg/kg, for example.
• the fluorine atom content a in the aromatic polyether is the content a1 of the fluorine atoms contained in the molecular structure of the aromatic polyether and the component not contained in the molecular structure of the aromatic polyether (free component) and the fluorine atom content a2.
• raw materials containing fluorine atoms are not used during the synthesis of aromatic polyethers, or the amount of raw materials containing fluorine atoms used during the synthesis of aromatic polyethers is reduced.
• the fluorine atom content a in the aromatic polyether can be less than 2 mg/kg.
• the free component in the fluorine atom content a2 is one or both of potassium fluoride and 4,4'-difluorobenzophenone.
• the chlorine atom content b in the aromatic polyether is 2 mg/kg or more, 10 mg/kg or more, 100 mg/kg or more, 500 mg/kg or more, 700 mg/kg or more, 1000 mg/kg or more, 2000 mg/kg or more. kg or more, 33000 mg/kg or more, or 4000 mg/kg or more.
• the upper limit is not particularly limited, and may be, for example, 10000 mg/kg or less, 9000 mg/kg or less, 8000 mg/kg or less, 7000 mg/kg or less, or 6000 mg/kg or less.
• the chlorine atom content b in the aromatic polyether is, for example, 2 to 10000 mg/kg, preferably 700 to 9000 mg/kg, more preferably 1000 to 8000 mg/kg.
• the chlorine atom content b is the chlorine atom content b1 contained in the molecular structure of the aromatic polyether, and the component not contained in the molecular structure of the aromatic polyether (free component). It is the sum of the chlorine atom content b2.
• the chlorine atom content b in the aromatic polyether can be 2 mg/kg or more.
• 4,4'-dichlorobenzophenone and hydroquinone are used as raw materials for synthesizing an aromatic polyether, and by increasing the ratio of the amount of 4,4'-dichlorobenzophenone used to the amount of hydroquinone used, the aromatic
• the chlorine atom content b of the polyether can be increased in the range of 2 mg/kg or more.
• the chlorine atom content b1 is 0 mg/kg or more, 100 mg/kg or more, 200 mg/kg or more, or 400 mg/kg or more.
• the upper limit is not particularly limited, and may be, for example, 10000 mg/kg or less, 9000 mg/kg or less, 8000 mg/kg or less, or 7000 mg/kg or less.
• the chlorine atom content b2 is 0 mg/kg or more, 2 mg/kg or more, 5 mg/kg or more, or 10 mg/kg or more.
• the upper limit is not particularly limited, and may be, for example, 500 mg/kg or less, 400 mg/kg or less, or 300 mg/kg or less.
• the free component in the chlorine atom content b2 is one or both of potassium chloride and 4,4'-dichlorobenzophenone.
• Chlorine atoms contained in the aromatic polyether as potassium chloride, which is a free component, are quantified by the following method.
• ⁇ Method for measuring chlorine atoms contained as free potassium chloride in aromatic polyether> A solid sample (aromatic polyether) is pulverized in a blender, washed with acetone and water in that order, and dried in an explosion-proof dryer at 180°C.
• the reaction mixture (product) immediately after the reaction for producing the aromatic polyether is used as a sample, the product is cooled and solidified after the reaction is completed to obtain the solid sample.
• the blender to be used is not particularly limited, and for example, Waring 7010HS can be used.
• Aqueous solutions are analyzed by ion chromatography, and chloride ions in the aqueous solutions are quantified based on a calibration curve prepared from references of known concentrations.
• the conditions for ion chromatography are as follows.
• Chlorine atoms contained as 4,4'-dichlorobenzophenone, which is a free component, in the aromatic polyether are quantified by the following method.
• ⁇ Method for Measuring Chlorine Atoms Contained as 4,4′-Dichlorobenzophenone as a Free Component in Aromatic Polyether A solid sample (aromatic polyether) is pulverized in a blender, washed with acetone and water in that order, and dried in an explosion-proof dryer at 180°C.
• the reaction mixture (product) immediately after the reaction for producing the aromatic polyether is used as a sample, the product is cooled and solidified after the reaction is completed to obtain the solid sample.
• the blender to be used is not particularly limited, and for example, Waring 7010HS can be used.
• About 1 g of the dried sample is weighed into an eggplant flask, 10 ml of acetone and boiling stones are added thereto, and the mixture is heated and refluxed in a water bath for 5 hours. After allowing to cool to room temperature, the solid content is removed by filtration. After drying the obtained acetone solution with an evaporator, 10 ml of acetone is added with a whole pipette to dissolve again. By measuring this by gas chromatography, the amount (mg/kg) of 4,4'-dichlorobenzophenone in the sample is calculated.
• the amount (mg/kg) of chlorine atoms contained in the aromatic polyether as 4,4′-dichlorobenzophenone, which is a free component is calculated using the following formula.
• Amount (mg/kg) of chlorine atoms contained as 4,4'-dichlorobenzophenone, which is a free component, in the aromatic polyether amount (mg/kg) of 4,4'-dichlorobenzophenone in the sample/251.11 (molecular weight of 4,4'-dichlorobenzophenone) x 35.45 (atomic weight of chlorine) x 2
• the structural unit represented by formula (1) is arranged at one or more ends of the molecular chain with a terminal structure bonded to the structural unit.
• the terminal structure attached to the structural unit may be a chlorine atom (Cl).
• the structural unit represented by formula (2) is arranged at one or more ends of the molecular chain with a terminal structure bonded to the structural unit.
• the terminal structure bonded to the structural unit may be, for example, a hydrogen atom (H) (when the terminal structure is a hydrogen atom (H), a hydroxyl group is formed together with the oxygen atom (O) in the structural unit). ).
• the terminal structure of the aromatic polyether may be, for example, a structure in which the chlorine atom (Cl) or hydroxyl group described above is replaced with a hydrogen atom (H) or the like.
• the terminal structure is not limited to these examples, and may be any structure.
• the aromatic polyether contains a structural unit represented by the following formula (3).
• An aromatic polyether containing structural units represented by formula (3) is also referred to as polyetheretherketone (abbreviated as “PEEK”).
• the aromatic polyether does not contain structural units other than the structural unit represented by formula (3).
• the end of the molecular chain can have a terminal structure as described above.
• the portion of the entire PEEK excluding the terminal structure, or (ii) the ratio (% by mass) of the structural unit represented by formula (3) to the total of all structural units constituting PEEK is 50% by mass or more. , 60% by mass or more, 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, 97% by mass or more, 99% by mass or more, 99.5% by mass or more, or 100% by mass.
• the molar ratio of the structural unit represented by formula (1) to the structural unit represented by formula (2) ([1A]:[2A]) is 47.5:52. .5-52.5: 47.5, 48.0: 52.0-52.0: 48.0, 48.5: 51.5-51.5: 48.5, 49.0: 51.0 ⁇ 51.0:49.0 or 49.5:50.5 to 50.5:49.5.
• the number of moles of the structural unit represented by formula (1) may be larger, smaller, or the same as the number of moles of the structural unit represented by formula (2). If the total proportion of the structural units represented by formulas (1) and (2) contained in all the monomers constituting PEEK is 100% by mass, the molar ratio is usually 1:1.
• PEEK can be produced, for example, by reacting 4,4′-dihalogenobenzophenone with hydroquinone.
• 4,4'-Dihalogenobenzophenone and hydroquinone are monomers for polymerizing aromatic polyethers. Through the step of reacting 4,4'-dihalogenobenzophenone and hydroquinone, an aromatic polyether can be obtained as a copolymer of these compounds (monomer units). 4,4'-dihalogenobenzophenones and hydroquinones can be easily synthesized and are commercially available.
• the 4,4'-dihalogenobenzophenone is not particularly limited, and the two halogen atoms may be the same or different.
• the two halogen atoms can each independently be fluorine, chlorine, bromine or iodine atoms.
• Specific examples of 4,4'-dihalogenobenzophenone include 4,4'-difluorobenzophenone, 4,4'-dichlorobenzophenone, etc. Among them, 4,4'-dichlorobenzophenone is preferred.
• reaction mixture is a reaction system from the initiation of the reaction of 4,4'-dihalogenobenzophenone and hydroquinone to the completion of the reaction. It is in the form of a solution containing
• the composition of the reaction mixture may change as the reaction progresses. Generally, as the reaction progresses, the concentration of the reactants (4,4'-dihalogenobenzophenone and hydroquinone) in the reaction mixture decreases and the concentration of the product (aromatic polyether) increases.
• the “maximum temperature” of the reaction mixture is the maximum temperature reached by the reaction mixture during the process from the initiation of the reaction between 4,4'-dihalogenobenzophenone and hydroquinone to the completion of the reaction (maximum temperature reached).
• the maximum temperature of the reaction mixture is not particularly limited, and is, for example, 260 to 360°C, preferably over 290°C to 360°C, more preferably 295 to 360°C, still more preferably 295 to 320°C.
• the method for producing an aromatic polyether according to this aspect comprises heating the reaction mixture at 180-220° C. for 0.5-2 hours, preferably 0.6-1.8 hours, more preferably 0.7 hours. This includes holding for ⁇ 1.5 hours (hereinafter also referred to as "temperature holding (i)"). As a result, the reaction can be promoted while suppressing the volatilization of the raw material, and an aromatic polyether having a higher molecular weight can be obtained.
• the process for producing an aromatic polyether according to this aspect comprises heating the reaction mixture at 230-270° C. for 0.5-2 hours, preferably 0.6-1.8 hours, more preferably 0.7 hours. This includes holding for ⁇ 1.5 hours (hereinafter also referred to as "temperature holding (ii)").
• the method for producing an aromatic polyether according to this aspect comprises heating the reaction mixture at 280 to 360° C. for 1 to 8 hours, preferably 2 hours or more, 3 hours or more, 4 hours or more, 5 hours or more, 8 hours or more. time or less, 6 hours or less, for example, 3 hours or more and 6 hours or less (the upper limit and the lower limit can be combined arbitrarily) (hereinafter also referred to as "temperature holding (iii)").
• temperature holding (iii) the upper limit and the lower limit can be combined arbitrarily
• the method for producing an aromatic polyether according to this aspect can include two or three selected from the group consisting of the above temperature retention (i) to (iii). Two or three temperature holdings are preferably carried out in ascending order of temperature. An increase in temperature of the reaction mixture can be included between the two or three temperature holds.
• the rate of temperature increase when heating the reaction mixture is not particularly limited. °C/min. As a result, the reaction can be promoted while suppressing the volatilization of the raw material, and an aromatic polyether having a higher molecular weight can be obtained.
• the time from when the temperature of the reaction mixture reaches 150°C to when it reaches the maximum temperature is 2.0 to 10 hours.
• the reaction mixture includes a solvent.
• a reaction mixture containing a solvent may be in the form of a solution.
• the solution may contain 4,4'-dichlorobenzophenone and hydroquinone dissolved in a solvent.
• the solvent is not particularly limited, and for example, a neutral polar solvent can be used.
• neutral polar solvents examples include N,N-dimethylformamide, N,N-diethylformamide, N,N-dimethylacetamide, N,N-diethylacetamide, N,N-dipropylacetamide, N,N-dimethyl Benzoamide, N-methyl-2-pyrrolidone, N-ethyl-2-pyrrolidone, N-isopropyl-2-pyrrolidone, N-isobutyl-2-pyrrolidone, Nn-propyl-2-pyrrolidone, Nn- Butyl-2-pyrrolidone, N-cyclohexyl-2-pyrrolidone, N-methyl-3-methyl-2-pyrrolidone, N-ethyl-3-methyl-2-pyrrolidone, N-methyl-3,4,5- trimethyl-2-pyrrolidone, N-methyl-2-piperidone, N-ethyl-2-piperidone, N-isopropyl-2-piperidone
• the reaction mixture contains an aromatic sulfone such as diphenylsulfone, and the content of a solvent having a boiling point of 270 to 330° C. is 0 parts by mass or more per 100 parts by mass of the aromatic sulfone. It is less than parts by mass. This facilitates control of the reaction temperature.
• the reaction mixture can contain one or more solvents.
• the reaction mixture contains only one solvent (single solvent) as solvent, which can simplify the process.
• the reaction mixture includes potassium carbonate. This facilitates the reaction.
• the reaction mixture contains alkali metal salts other than potassium carbonate, such as alkali metal carbonates and alkali metal hydrogen carbonates. These alkali metal salts may be used in combination with potassium carbonate. For example, potassium carbonate and sodium carbonate may be used together.
• Alkali metal carbonates include lithium carbonate, rubidium carbonate, cesium carbonate, and the like.
• alkali metal hydrogencarbonates that can be used in combination with potassium carbonate include lithium hydrogencarbonate, sodium hydrogencarbonate, potassium hydrogencarbonate, rubidium hydrogencarbonate, and cesium hydrogencarbonate. These alkali metal salts may be used alone or in combination of two or more.
• the total concentration of alkali metal salts (including potassium carbonate and other alkali metal salts mentioned above) in the reaction mixture is not particularly limited.
• the total amount of the alkali metal salt compounded in the reaction mixture is 100 mol parts or more, and 180 mol parts or less, 160 mol parts or less, or 140 mol parts or less, or It is 120 mol parts or less. If the total amount of alkali metal salts to be added is 100 mol parts or more, the reaction time can be shortened. If the total amount of the alkali metal salts is 180 mol parts or less, the formation of gel components can be suppressed.
• the total amount of the alkali metal salt compounded in the reaction mixture is, for example, 100 to 180 mol parts, preferably 100 to 140 mol parts, more preferably 100 to 120 mol parts, per 100 mol parts of hydroquinone blended in the reaction mixture.
• potassium carbonate is blended as the alkali metal salt in the above blending amount.
• the reaction mixture does not contain any of sodium fluoride, potassium fluoride, rubidium fluoride and cesium fluoride.
• a high-molecular-weight aromatic polyether can be obtained without containing these compounds.
• an aromatic polyether capable of exhibiting excellent mechanical strength can be produced at low cost.
• the molar ratio ([DHBP]:[HQ]) of 4,4'-dihalogenobenzophenone (DHBP) and hydroquinone (HQ) to be subjected to the reaction is not particularly limited.
• the molar ratio ([DHBP]:[HQ]) can be adjusted as appropriate for purposes such as controlling the molecular weight of the aromatic polyether to be obtained.
• the molar ratios ([DHBP]:[HQ]) are 47.5:52.5-52.5:47.5, 48.0:52.0-52.0:48.0, 48.5:51.5-51.5:48.5, 49.0:51.0-51.0:49.0 or 49.5:50.5-50.5:49.5.
• the number of moles of 4,4′-dihalogenobenzophenone (DHBP) may be greater than, less than or equal to the number of moles of hydroquinone (HQ).
• the total concentration of 4,4'-dihalogenobenzophenone and hydroquinone in the reaction mixture is not particularly limited. 3 mol/l or more, 1.4 mol/l or more, or 1.5 mol/l or more, and 6.0 mol/l or less, 5.0 mol/l or less, or 4.0 mol/l or less.
• the total concentration of 4,4'-dihalogenobenzophenone and hydroquinone in the reaction mixture (blended amount basis) is, for example, 1.0 to 6.0 mol/l, preferably 1.3 to 5.0 mol/l, and more. It is preferably 1.5 to 4.0 mol/l.
• monomers other than 4,4'-dihalogenobenzophenone and hydroquinone are not used as the monomers subjected to the reaction described above.
• the total proportion (% by mass) of 4,4′-dihalogenobenzophenone and hydroquinone based on the total monomers subjected to the reaction is 50% by mass or more, 60% by mass or more, 70% by mass or more. , 80% by mass or more, 90% by mass or more, 95% by mass or more, 97% by mass or more, 99% by mass or more, 99.5% by mass or more, or 100% by mass.
• unavoidable impurities may be included.
• the reaction between 4,4'-dihalogenobenzophenone and hydroquinone can be carried out in an inert gas atmosphere.
• the inert gas is not particularly limited, and examples thereof include nitrogen, argon gas, and the like.
• the aromatic polyether contains a structural unit represented by the following formula (4).
• An aromatic polyether containing a structural unit represented by formula (4) is also referred to as polyetheretheretherketone (abbreviated as "PEEEK”).
• the structural unit represented by formula (3) and the structural unit represented by formula (4) are different from each other, and in the aromatic polyether, the partial structure corresponding to the structural unit represented by formula (4) is , is regarded as a structural unit represented by formula (4), and is not regarded as a structural unit represented by formula (3).
• the aromatic polyether does not contain structural units other than the structural unit represented by formula (4).
• the end of the molecular chain can have a terminal structure as described above.
• the method for producing an aromatic polyether containing a structural unit represented by formula (4) is the same as the method for producing PEEK, except that 4,4'-dihydroxydiphenyl ether is used instead of hydroquinone. There is, and the explanation about the manufacturing method of PEEK is used.
• the aromatic polyether comprises structural units represented by formula (3) and structural units represented by formula (4).
• the aromatic polyether containing the structural unit represented by the formula (3) and the structural unit represented by the formula (4) is a polyetheretherketone/polyetheretheretherketone copolymer (abbreviated as “PEEK/PEEEK copolymer”). polymer”).
• the ratio of the number of moles of the unit [mol%] is not particularly limited, and is, for example, more than 0% and less than 100%, preferably 0.1 to 99.9 mol%, more preferably 0.1 to 50.0 mol%, more It is preferably 0.1 to 10.0 mol %, more preferably 0.1 to 5.0 mol %.
• the aromatic polyether does not contain structural units other than structural units represented by formula (3) and structural units represented by formula (4).
• the end of the molecular chain can have a terminal structure as described above.
• the method for producing an aromatic polyether containing a structural unit represented by formula (3) and a structural unit represented by formula (4) includes hydroquinone partly replaced with 4,4′-dihydroxydiphenyl ether (Using hydroquinone and 4,4'-dihydroxydiphenyl ether together), the method for producing PEEK is the same, and the explanation given for the method for producing PEEK is incorporated.
• the aromatic polyether does not contain structural units other than the structural units represented by formulas (1) and (2).
• the end of the molecular chain can have a terminal structure as described above.
• the aromatic polyether contains structural units other than the structural units represented by formulas (1) and (2) within a range that does not impair the effects of the present invention.
• the total ratio (% by mass) of the structural units represented by formula (1) and formula (2) contained in all monomers is 50% by mass or more. , 60% by mass or more, 70% by mass or more, 80% by mass or more, 90% by mass or more, 95% by mass or more, 97% by mass or more, 99% by mass or more, 99.5% by mass or more, or 100% by mass.
• composition according to the first aspect of the invention comprises the aromatic polyether according to one aspect of the invention. According to the composition according to the first aspect, excellent mechanical strength can be imparted, particularly to an aromatic polyether/continuous fiber composite material.
• a composition according to a second aspect of the present invention is a composition containing an aromatic polyether, wherein the aromatic polyether is represented by a structural unit represented by formula (1) and formula (2) MFR 4 [g/10 min] measured after preheating the composition at 380° C. for 4 minutes, and MFR 30 [g/10 min] measured after preheating the composition at 380° C. for 30 minutes. 10 min] satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1.
• the composition according to the second aspect also has excellent mechanical strength, and in particular can impart excellent mechanical strength to the aromatic polyether/continuous fiber composite material.
• the aromatic polyether contained in the composition according to the second aspect has an MFR 4 [g/10 min] measured after preheating the aromatic polyether at 380 ° C. for 4 minutes, and the aromatic polyether MFR 30 [g/10 min] measured after preheating at 380° C. for 30 minutes may or may not satisfy the condition of MFR 4 /MFR 30 ⁇ 1.1. good. That is, the composition according to the second aspect has an MFR 4 [g/10 min] measured after preheating the composition at 380 ° C. for 4 minutes, and a MFR 4 [g/10 min] measured after preheating the composition at 380 ° C.
• MFR 30 [g/10 min] satisfies the condition of MFR 4 /MFR 30 ⁇ 1.1.
• MFR 4 and MFR 30 of the compositions the discussion given for the MFR 4 and MFR 30 of the aromatic polyethers is incorporated, including the discussion of their preferred ranges.
• the methods for measuring MFR 4 and MFR 30 of compositions are similar to those for aromatic polyethers, except that compositions are used instead of aromatic polyethers as samples .
• the composition satisfies one or both of conditions (A) and (B) below.
• the fluorine atom content a is less than 2 mg/kg.
• the chlorine atom content b is 2 mg/kg or more.
• the "fluorine atom content a" is the ratio of the fluorine atom mass [mg] to the total mass [kg] of the aromatic polyether (excluding other coexisting components) and other coexisting components. be.
• the total mass [kg] of the aromatic polyether (not including other coexisting components) and other coexisting components corresponds to the mass [kg] of the entire composition.
• the "chlorine atom content b" is the ratio of the mass [mg] of chlorine atoms to the total mass [kg] of the aromatic polyether (not including other coexisting components) and other coexisting components. be. Also here, the total mass [kg] of the aromatic polyether (not including other coexisting components) and other coexisting components corresponds to the mass [kg] of the entire composition.
• the method for measuring the fluorine atom content a and the chlorine atom content b in the composition is to measure the fluorine atom content a and the chlorine atom content b in the aromatic polyether, except that the composition is used as a sample instead of the aromatic polyether. It is the same as the method for measuring the atomic content b.
• composition according to the first aspect of the present invention and the composition according to the second aspect of the present invention may be collectively referred to as "the composition according to one aspect of the present invention".
• Components other than the aromatic polyether contained in the composition according to one aspect of the present invention are not particularly limited.
• a composition according to an aspect of the present invention is suitably used, for example, for producing a composite material containing an aromatic polyether and continuous fibers.
• Film A film according to one aspect of the present invention includes the aromatic polyether according to one aspect of the present invention or the composition according to one aspect of the present invention.
• a film according to an aspect of the present invention is suitably used, for example, for producing a composite material containing an aromatic polyether and continuous fibers.
• the powder according to one aspect of the present invention includes the aromatic polyether according to one aspect of the present invention or the composition according to one aspect of the present invention.
• the powder according to one aspect of the present invention is suitably used, for example, for producing a composite material containing an aromatic polyether and continuous fibers.
• Pellets A pellet according to one aspect of the present invention comprises the aromatic polyether according to one aspect of the present invention or the composition according to one aspect of the present invention. Pellets according to an aspect of the present invention are suitably used, for example, for producing composite materials containing aromatic polyether and continuous fibers.
• the composition, film, powder or pellets according to one aspect of the invention comprises an aromatic polyether and other ingredients.
• Other components are not particularly limited, and include potassium carbonate, other resins other than aromatic polyethers, and the like.
• Other resins include, for example, fluororesins such as polytetrafluoroethylene.
• one type may be used alone, or two or more types may be used in combination.
• the film, powder, and pellets according to one aspect of the present invention described above can be formed using the respective constituent components as materials using methods known in the art.
• Composite material includes the aromatic polyether according to one aspect of the present invention, the composition according to one aspect of the present invention, the film according to one aspect of the present invention, and the one aspect of the present invention. or the pellets according to one aspect of the present invention, and continuous fibers.
• the composite material according to the first aspect exhibits excellent mechanical strength.
• the aromatic polyether contained in the composite material according to the first aspect may be the aromatic polyether according to one aspect of the present invention, and may not be the aromatic polyether according to one aspect of the present invention. That is, the aromatic polyether contained in the composite material according to the first aspect has an MFR 4 [g/10 min] measured after preheating the aromatic polyether at 380 ° C.
• the aromatic polyether MFR 30 [g/10 min] measured after preheating at 380° C. for 30 minutes may or may not satisfy the condition of MFR 4 /MFR 30 ⁇ 1.1.
• the condition of MFR 4 /MFR 30 ⁇ 1.1 is satisfied.
• a composite material according to a second aspect of the present invention includes the aromatic polyether according to one aspect of the present invention or the composition according to one aspect of the present invention, and continuous fibers.
• the composite material according to the second aspect also exhibits excellent mechanical strength.
• composite material according to the first aspect of the present invention and the composite material according to the second aspect of the present invention may be collectively referred to as "composite material according to one aspect of the present invention".
• composite material according to one aspect of the present invention is described in more detail below.
• continuous fiber means a fiber that constitutes a woven fabric or a fiber that constitutes a unidirectional fiber that is aligned in one direction.
• continuous fibers are included in the composite in the form of woven or unidirectional fibers.
• the woven fabric and unidirectional fibers are not particularly limited as long as they contain continuous fibers.
• the woven fabric and unidirectional fibers are composed of continuous fibers arranged in a plane.
• the continuous fibers contained in the composite material are preferably one or more selected from the group consisting of glass fibers and carbon fibers.
• the shape of the continuous fibers is not particularly limited, and may have one or more shapes selected from the group consisting of rovings and woven fabrics consisting of rovings.
• a bundle of continuous fibers in one direction can be used.
• 3000 (3K), 6000 (6K), 12000 (12K), 24000 (24K) or 60000 single fibers of the fiber supplied from the fiber manufacturer as a fiber bundle (60K) or the like may be used as it is, or a product obtained by further bundling them may be used.
• the fiber bundle may be untwisted yarn, twisted yarn, or untwisted yarn.
• the fiber bundle may be included in the molded article in an open state, or may be included as a fiber bundle without being opened.
• the member containing continuous fibers is a woven fabric or a unidirectional member
• a molded article can be obtained by immersing the member in a resin.
• the type of carbon fiber is not particularly limited, and may be PAN based using polyacrylonitrile as a raw material, pitch based using coal tar pitch in petroleum or coal as a raw material, thermosetting resin such as phenol based using phenol resin as a raw material.
• Various carbon fibers can be used.
• the carbon fibers may be those obtained by vapor deposition, or may be recycled carbon fibers (RCF).
• the carbon fiber is not particularly limited as described above, it is selected from the group consisting of PAN-based carbon fiber, pitch-based carbon fiber, thermosetting carbon fiber, phenol-based carbon fiber, vapor-grown carbon fiber, and recycled carbon fiber (RCF). is preferably at least one carbon fiber.
• Single fibers having an average fiber diameter of preferably 3 to 15 ⁇ m, more preferably 5 to 7 ⁇ m can be used.
• the average fiber diameter of carbon fibers is determined by the arithmetic mean of values measured according to JIS R 7607:2000.
• the carbon fiber may have a sizing agent attached to its surface.
• the type of the sizing agent can be appropriately selected according to the type of carbon fiber, and is not particularly limited.
• Various types of carbon fibers have been produced, including those treated with epoxy sizing agents, urethane sizing agents, polyamide sizing agents, and those not containing sizing agents. can be used regardless.
• a silane coupling agent such as aminosilane, isocyanate silane, and acrylic silane can be used in combination with the sizing agent.
• the type of glass fiber is not particularly limited.
• glass fibers of various compositions such as E glass, low dielectric glass, silica glass, etc. can be selected and used according to the purpose and application.
• the average fiber diameter of glass fibers is determined by the arithmetic mean of values measured according to JIS R 7607:2000.
• the glass fiber may have a sizing agent attached to its surface.
• the type of the sizing agent can be appropriately selected according to the type of glass fiber, and is not particularly limited.
• Various types of glass fibers have been produced, such as those treated with epoxy-based sizing agents, urethane-based sizing agents, vinyl acetate-based sizing agents, and those that do not contain sizing agents. can be used regardless of
• a silane coupling agent such as aminosilane, isocyanate silane, and acrylic silane can be used in combination with the sizing agent.
• the average fiber length of continuous fibers is 25 mm or more, 50 mm or more, or 100 mm or more, and 100 km or less, 10 km or less, 1 km, or 100 m or less.
• the average fiber length of continuous fibers is determined by arithmetic mean.
• the composite material includes continuous fibers and aromatic polyether impregnated in the interstices between the continuous fibers.
• a composite material may include, for example, a fabric or unidirectional fiber constituted by the continuous fibers and aromatic polyether impregnated in the interstices between the continuous fibers.
• the composite material includes continuous fibers and aromatic polyether as the matrix.
• Such composite materials can be so-called fiber reinforced thermoplastics (FRTP).
• FRTP fiber reinforced thermoplastics
• a unidirectional fiber reinforced plastic can be obtained by using unidirectional fibers as continuous fibers.
• the composite material may be a single sheet, or may be a laminate in which two or more sheets are laminated.
• the aromatic polyether can also contribute to bonding between the composite materials.
• the composite material may contain other components in addition to the aromatic polyether and continuous fibers.
• Other components include those described for films, powders and pellets according to one aspect of the present invention.
• it when it is "substantially 100% by mass", it may contain unavoidable impurities.
• a method of making a composite material includes contacting and integrating continuous fibers with an aromatic polyether according to one aspect of the present invention.
• a method of making a composite material includes making a composite material with continuous fibers bound by a sizing agent comprising an aromatic polyether.
• a method for producing a composite material includes an aromatic polyether according to one aspect of the present invention, a composition according to one aspect of the present invention, a film according to one aspect of the present invention, and a It includes a step of combining powder or pellets according to one aspect of the present invention with continuous fibers.
• a method for producing a composite material includes an aromatic polyether according to one aspect of the present invention, a composition according to one aspect of the present invention, a film according to one aspect of the present invention, and a It includes pressing powder or pellets according to one aspect of the present invention and continuous fibers under heat.
• a method of manufacturing a composite material includes contacting a film according to an aspect of the present invention with a fabric or unidirectional fiber composed of continuous fibers followed by melt pressing.
• a method of manufacturing a composite material includes contacting a powder according to an aspect of the present invention with a fabric or unidirectional fiber composed of continuous fibers followed by melt pressing.
• a method of manufacturing a composite material includes the steps of melting pellets according to an aspect of the present invention and contacting them with a woven fabric or unidirectional fibers composed of continuous fibers, followed by melt pressing.
• the aromatic polyether according to one aspect of the present invention and the woven fabric or unidirectional fiber are alternately arranged in two or more layers to produce a composite material in the form of a laminate. You may
• the composite material is planar (sheet) on all sides.
• the composite material is given a three-dimensional shape. If the shape of the composite material is "three-dimensional," for example, the composite material may be a sheet that includes a curved portion (bent portion).
• a method for manufacturing a sheet having a three-dimensional shape is not particularly limited.
• a method of making a three-dimensionally shaped sheet comprises impregnating a three-dimensionally shaped fabric or unidirectional fiber with an aromatic polyether.
• a method for producing a sheet having a three-dimensional shape includes impregnating a cloth with an aromatic polyether to obtain a sheet (for example, a planar sheet), and then applying a three-dimensional shape to the sheet. Including molding to give shape. Molding can be performed, for example, by applying pressure to the sheet under heat.
• Aromatic polyethers, films, powders, pellets, and composite materials according to one aspect of the present invention are suitable, for example, as aerospace members, gears, sliding members such as bearings, filaments for 3D printers, and the like. .
• Example 1 Test for the condition of MFR 4 /MFR 30 ⁇ 1.1 (Example 1) A reactor was assembled by attaching a stirring blade, a stirrer, a thermocouple, a nitrogen inlet tube, a cooling tube and a receiver to a 4-necked 2 L separable flask. 485.14 g (2.22 mol) of diphenylsulfone (manufactured by Sino-High) was put into the reactor, the inside of the reactor was made into a nitrogen atmosphere, and the diphenylsulfone was melted by heating with a mantle heater.
• diphenylsulfone manufactured by Sino-High
• the solidified product was pulverized using a blender (7010HS manufactured by Waring Co.), and washed with acetone and filtered repeatedly.
• the solidified matter after filtration was dispersed in ion-exchanged water, washed at a liquid temperature of 80° C., and filtered.
• the solidified matter after filtration was repeatedly washed with ion-exchanged water and filtered until the pH of the filtrate reached the value shown in Table 1.
• the "washing with ion-exchanged water” 800 ml of ion-exchanged water was added to the solidified material, and the solidified material was stirred and washed at 60°C for 20 minutes. Then, the filtered solid was dried with a hot air dryer at 180° C. for 5 hours to obtain PEEK.
• Example 2 PEEK was obtained in the same manner as in Example 1, except that the amounts of 4,4′-dichlorobenzophenone, hydroquinone, potassium carbonate and diphenylsulfone used were changed as follows. ⁇ 4,4'-dichlorobenzophenone: 289.01 g (1.151 mol) ⁇ Hydroquinone: 123.40 g (1.121 mol) ⁇ Potassium carbonate: 178.12 g (1.289 mol) ⁇ Diphenyl sulfone: 970.28 g (4.45 mol)
• Example 3 Commercially available PEEK (manufactured by Victrex, 450G) was freeze-ground. Next, an aqueous solution containing 10% by mass of potassium carbonate was added to the obtained powder so that 0.09 parts by mass of potassium carbonate was added to 100 parts by mass of PEEK, and the mixture was thoroughly mixed. The mixture was then dried in a hot air dryer at 180° C. for 5 hours to obtain PEEK.
• PEEK manufactured by Victrex, 450G
• Example 4 PEEK was obtained in the same manner as in Example 3, except that commercially available PEEK (manufactured by Victrex, 151G) was used in place of the commercially available PEEK (manufactured by Victrex, 450G).
• Example 5 41.203 g (0.164 mol) of 4,4'-dichlorobenzophenone, 17.804 g of hydroquinone ( 0.162 mol), 25.707 g (0.186 mol) of potassium carbonate (Fuji Film Wako Pure Chemical Co., Ltd., fine powder) and 140.0 g of diphenylsulfone were added, and nitrogen gas was passed through. After the temperature was raised to 150° C., the temperature was raised to 200° C. over 30 minutes and held for 60 minutes. Next, the temperature was raised to 250° C. over 30 minutes and held for 60 minutes, and further heated to 300° C. over 30 minutes and held for 2 hours.
• the product was pulverized with a blender (7010HS manufactured by Waring Co.), washed with acetone and water in that order, and dried with a drier at 180° C. to obtain powdery PEEK.
• 40 g of the obtained PEEK and 400 ml of N-methyl-2-pyrrolidone (NMP) were charged in a separable Slafco and stirred at 180° C. for 1 hour.
• the resulting mixture was then cooled to 100° C. or less and filtered to obtain a solid content. 1000 ml of 10% by mass oxalic acid aqueous solution was added to the obtained solid content, and the mixture was stirred at 80° C. for 1 hour. Solids were then separated by filtration.
• Comparative example 1 Commercially available PEEK (manufactured by Victrex, 450G) was used as PEEK of Comparative Example 1. In addition, the total K (potassium) concentration of PEEK of Comparative Example 1 is less than the lower limit of quantification of 1 ppm.
• Combustion Ion Chromatography Combustion ion Chromatography was used to measure the content a of fluorine atoms and the content b of chlorine atoms in PEEK. Specifically, the sample was introduced into a combustion furnace, burned in a combustion gas containing oxygen, and the generated gas was collected in an absorbent, which was then separated and quantified by ion chromatography. Quantitative values were obtained based on a calibration curve prepared from references of known concentrations. Measurement conditions are shown below. ⁇ Sample combustion> Combustion device: AQF-2100H combustion furnace manufactured by Mitsubishi Chemical Analytech Co., Ltd.
• MFR melt flow rate
• MFR 4 [g/10 min] 600/t x m
• a woven fabric made of carbon fibers (Mitsubishi Chemical Corporation: Pyrofil woven fabric, TR3110M, basis weight: 200 g/m 2 ) was prepared as the continuous fiber. This fabric is cut into 11 cm squares (11 cm long and 11 cm wide). The length of continuous fibers (carbon fibers) contained in this fabric is 11 cm or more. Seven sheets of the obtained film and six sheets of fabric were alternately laminated such that the fabric was positioned between the films. At that time, a 200 ⁇ m film was arranged between the fabrics, and a 100 ⁇ m film was arranged as the outermost layer.
• the laminate is sandwiched between polyimide films having a thickness of 100 ⁇ m, placed in a press mold having a convex mold and a concave mold preheated to 420° C., and press pressure is 10 MPa for 5 minutes and 100 MPa for 25 minutes at 420° C. and then returned to atmospheric pressure and cooled to 30°C to obtain an aromatic polyether/continuous fiber composite material.
• the thickness of the aromatic polyether/continuous fiber composite material was 1.7 mm, and the volume content (Vf) of the continuous fiber (carbon fiber) was was 40%.
• Vf volume content

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