JPH0255728A - Aromatic polyether polymer and preparation thereof - Google Patents

Abstract

PURPOSE:To prepare an arom. polyether having excellent heat resistance, moldability, mechanical property and solvent resistance and high Tg, generating fluorescence and being suitable for a display material by providing an ether wherein dioxydiphenyl (or dinaphthyl)methane deriv. is the molecular skeleton as a repeating unit. CONSTITUTION:An arom. polyether resin useful for an engineering resin is constituted of a polymer having repeating units of formula I or II [wherein Y is a cyanophenylene group of formula III or a divalent diphenyl sulfone group of formula IV; Z is -COOR' or -CONHR'' (wherein R' and R'' are each a 1-6C alkyl, a 3-8 cycloalkyl or a 6-8C aryl); R<1>, R<2>, R<4> and R<5> are each a 1-6C alkyl or a 6-8C aryl; R<3> and R<5> are each a 1-6C alkyl, a 6-8C aryl, -COOH or a halogen atom; m, n, q, and r are each 0.1-3; and p and s are each 0.1-4] and a reduced viscosity of 0.1dl/g or larger (measured at 30 deg.C on a soln. of the concn. of 0.2g/dl in N-methylpyrrolidone).

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a novel aromatic polyether polymer and a method for producing the same. Aromatic polyether polymers useful as materials that require heat resistance and display materials.

and a method for efficiently producing this polymer.

[Issue 8 to be solved by the prior art and the invention] In recent years,
Engineering resins with various structures have been developed and are used in a wide range of fields, such as the automobile field, electric/electronic field, precision machinery field, OA equipment field, and optical communication equipment field. However, as the performance requirements have become stricter, it is desired to develop a new material.

One of the engineering resins is an aromatic polyether polymer, and examples of this aromatic polyneedle polymer include polyether ether ketone (see Japanese Patent Application Laid-open No. 1983-97094) and polyether sulfone (see (see Japanese Patent Publication No. 49-86500) are well known.

However, although these exhibit excellent heat resistance, their glass transition temperature is not very high, so they have the disadvantage that they cannot maintain sufficient rigidity above this temperature.

On the other hand, the present inventors previously discovered that a specific aromatic polyether polymer obtained from the reaction of phenolphthalins or naphtholphthalins with dihalogenobenzonitrile or dihalogenodiphenylsulfone has excellent heat resistance. I discovered that.

However, since this particular aromatic polyether polymer contains a carboxyl group in one of the polymers, there is room for improvement in stability during ripening.

This invention was made based on the above circumstances.

The object of the present invention is to provide a novel aromatic polyether polymer useful as a new material, which exhibits extremely excellent heat resistance, excellent stability during ripening, and is easy to mold.
Another object of the present invention is to provide a method for efficiently producing this aromatic polyether polymer.

[Means for Solving the Problem] In order to solve Problem B, the inventor has made extensive studies and found that an aromatic polyether polymer having a specific repeating unit has extremely excellent heat resistance. This particular aromatic polyether polymer has properties such as excellent stability during thermoforming and easy molding. This invention was achieved by discovering that it can be easily manufactured.

Z is -GOOR' or -〇〇NHR' (RTE The structure of the invention of claim 1 is linear formula (1): Re is the number of carbon atoms 1
-6 alkyl group, a cycloalkyl group having 3 to 8 carbon atoms, or an aryl group having 6 to 8 carbon atoms. ) and R'
, R2, R' and R'- are each carbon 11-6
is an alkyl group or an aryl group having 6 to 8 carbon atoms.
f13 and R6 are any of an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 8 carbon atoms, a carboxyl group, and a halogen atom, and m, n, q, and " are respectively 0 and an integer of 1 to 3. and p and S are O and an integer of 1 to 4, respectively.] It has a repeating unit represented by It is an aromatic polyether polymer characterized by having a reduced viscosity of 0.1 d/g or more at a temperature of 30°C in a solution of 9il11 of claim qt2. , the following formula (■); and R8 are each an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 8 carbon atoms, and R3 and R6 are an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 8 carbon atoms. , a carboxyl group or a halogen atom, m, n, q and r are each 0 and an integer of 1 to 3, and p and S are O and an integer of 1 to 4, respectively. ] and has a reduced viscosity of 0.1 du/g or more at 30°C in a solution with a concentration of 0.2 g/dJl using N-methylpyrrolidone as a solvent. Ether polymer and the following formula (V): R' 0
COX (V) or the following formula (Vl) R' NGO (V'l) is a cycloalkyl group or an aryl group having 6 to 8 carbon atoms.] A method for producing an aromatic polyether polymer according to claim 1, characterized in that the reaction is carried out with a compound represented by the following.

The aromatic polyether polymer of this invention has the formula (m
); Ether polymer, or the above formula (■); [In formula (m), (17), Y, R'R", R, R'
, R', R', m, n, p.

Q+r and S each have the same meaning as above. ] An aromatic polyether polymer having a repeating unit represented by the formula (V); ] Palitoformate or the above formula % formula % (
) [In the Tatami 1 formula (VT), RO is the same as above and has a pi flavor. ] #A can be produced by reacting with incyanate represented by:

The aromatic polyether polymer represented by the formula (m) can be prepared, for example, by the following formula (■);
(■) [However, in formula (■), xl and x
l is a halogen atom, which may be the same or different from each other;

A dihalogeno compound represented by the following formula (Vl);
[In formula (Vl), R1 and m have the same meanings as above, and t is an integer of 1 to 3. ] It can be obtained by reacting with phenolphthalin or a derivative thereof represented as follows.

As the dihalogeno compound represented by the above formula (■),
For example, 2,6-difluorobenzonitrile, 2.6
-dichlorobenzonitrile, 2-fluoro-6-chlorobenzonitrile, 2,4-dichlorobenzonitrile, 2
．． Dihalogenobenzonitrile such as 4-difluorobenzonitrile; and 4,4'-difluorodiphenylsulfone, 4,4'-dichlorodiphenylsulfone, 4-
4. such as chloro-4'-fluorodiphenylsulfone.
4'-dihalogenodiphenylsulfone may be mentioned.

Phenolphthalin represented by the above formula (■) or its derivatives include, for example, phenolphthalin represented by the above formula (■), and a dihalogeno compound represented by the above formula (■) and the above formula (
In the reaction with phenolphthalin or a derivative thereof represented by vl), a divalent compound represented by the following formula (IX) HO-A r 2-OH (fK ) is reacted with the dihalogeno compound and the phenolphthalin or its derivative. phenols can be used.

Examples of Ar2 in the formula (IX) include the following.

As for the alkali metal compound, phenolphthalin represented by the formula (■) or its one-way conductor and the dihydric phenol used as desired can be converted into an alkali metal salt. Well, although there are no particular limitations, preferred are alkali metal carbonates and alkali gold J+1ff carbonates.

The alkali gold Ji! Examples of d-acid salts include lithium oxide, sodium carbonate, potassium carbonate, rubidium carbonate, and cesium carbonate.

Examples of the alkali metal bicarbonate include lithium hydrogen carbonate, sodium hydrogen carbonate, potassium hydrogen carbonate,
Examples include rubidium hydrogen carbonate and cesium hydrogen carbonate.

Examples of the neutral polar solvent include N,N-dimethylformamide, N,N-diethylformamide, N,N
-dimethylacetamide, N,N-diethylacetamide, N,N-dipropylacetamide, N,N-dimethylbenzoic acid amide, N-methyl-2-pyrrolidone, N-
Ethyl-2-pyrrolidone, N-isopropyl-2-pyrrolidone, N-inbutyl-2-pyrrolidone, N
-n-propyl-2-pyrrolidone, N-n-butyl-2
-pyrrolidone, N-cyclohexyl-2-pyrrolidone,
N-methyl-3-methyl-2-pyrrolidone, N-ethyl-3-methyl-2-pyrrolidone, N-methyl-3,4,
5-)-Tmethyl-2-pyrrolidone, N-methyl-2-
piperitone, N-ethyl-2-piperitone, N-isopropyl-2-piperitone, N-methyl-6-methyl-2
-piperitone, N-methyl-3-ethylpiperidone, dimethylsulfoxide, diethylsulfoxide, l-methyl-1-oxosulfolane, l-ethyl-1-oxosulfolane, l-phenyl-1-oxosulfolane, l-
Methyl-■-oxophosphane, 1-n-propyl-1
-oxophosphane, l-phenyl-1-oxophosphane, dimethylimidazolidinone, diphenylsulfone, and the like.

A dihalogeno compound represented by the above formula (■) and a dihalogeno compound represented by the above formula (■)
The usage ratio of phenolphthalin or its derivative represented by VW) is based on the molar ratio of the dihalogeno compound to the total amount of the phenolphthalin or its derivative and the dihydric phenol further used as desired. ,usually.

0.98-1.02; 1 go, preferably 1.0
0 to 1.02; I, 1 go.

The proportion of the alkaline compound used in 1ti is as follows: the above-mentioned phenolphthalin or its derivative; The proportion is usually 1.00 to 3.00 g atoms, preferably 1.50 to 1.80 g atoms per 1/2 mole of the dihydric phenols used depending on the amount of the dihydric phenols used. It is.

There is no particular restriction on the amount of the neutral polar solvent used;
+(+-1(selected within the range of 100 parts).

The aromatic polyether polymer represented by the formula CI [ The above dihydric phenols are added at the same time or in appropriate portions depending on the conditions, and the polymerization reaction is carried out at a temperature usually in the range of 150 to 350°C, preferably 180 to 250°C, to achieve 1'J. I can do it. The reaction time in this reaction depends on the reaction temperature, the type of raw material monomer, the type and amount of the alkali metal compound, etc., so it cannot be roughly determined, or it is usually 0.5 to 10
time, preferably 2 to 5 hours.

The aromatic polyether polymer represented by the formula (IV) is, for example, represented by the following formula (X): [In the formula (X), R', R', R', q.

r and S are the same as above, and are a taste. ] and α-naphtholphthalenes represented by the following formula (XI);
are the same as above, respectively, and have an α taste. ] It can be obtained by reacting the dihalogeno aromatic compound represented by the following in the presence of the alkali metal compound in the neutral polar solvent.

As the dihalogeno aromatic compound represented by the formula (X[), the dihalogeno aromatic compound represented by the following formula (Kari): (Xi and x2 in the formula have the same meanings as above, respectively) Diphenylsulfone, or dihalogenobenzonitrile represented by the following formula (Xll);

Specific examples of the dihalogenodiphenylsulfone represented by formula (1) include 4,4'-difluorodiphenylsulfone, 4,4'-dichlorodiphenylsulfone, and 4-chloro-4'-fluorodiphenylsulfone. It will be done.

Specific examples of the dihalogenobenzonitrile represented by the formula (XI) include 2,6-difluorobenzonitrile, 2,6-dichlorobenzonitrile, 2-chloro-6-fluorobenzonitrile, 2,4-difluorobenzonitrile, and Benzonitrile, 2,4-dichlorobenzonitrile, 2
-chloro-4-fluorobenzonitrile, 2-fluoro-4-chlorobenzonitrile, and the like.

In the reaction of the α-naphtholphthalenes represented by the formula (X) with the dihalogeno aromatic compound represented by the formula (X[), along with the α-naphtholphthalines, if desired, It is possible to use a suitable aromatic dihydroxy compound as a polymerization component. Examples of such aromatic dihydroxy compounds include hydroquinone, resorcinol, methylhydroquinone, and chlorohydroquinone.
chloroquinone, acetylhydroquinone, acetoxyhydroquinone, 1.4-dihydroxynaphthalene, 1.5
-dihydroxynaphthalene, 1,6-dihydroxynaphthalene, 2,6-dihydroxynaphthalene, 2,7-dihydroxynaphthalene, 2,2-bis(4-hydroxyphenyl)propane, bis(4-dihydroxydiphenyl)methane, bis(4-dihydroxynaphthalene) -dihydroxyphenyl) ether and the like. When these copolymer components are used, it is desirable that the amount of JIJ 7i used is 99 mol % or less based on the total diol components.

The aromatic polyether represented by the formula (IV) can be prepared by, for example, adding a required amount of the alkali metal compound, α-naphtholphthalenes, and the dihalogeno aromatic compound in the neutral polar solvent, and optionally the above dihalogeno aromatic compound. The aromatic dihydroxy compound is added simultaneously or in appropriate portions and heated to usually 150 to 350°C, preferably 180°C.
17 can be achieved by carrying out the one reaction at a temperature in the range of ~250°C. At this time, it is preferable that the dihalogeno aromatic compound is used in a proportion that is substantially equimolar to the total diol component, and the alkali metal compound is used in a proportion that is substantially equimolar to the total diol component. The amount of alkali metal atoms is usually 1.0 to 2.5 gram atoms,
Preferably, it is used in a proportion of 1.05 to 2.0 gram atoms. In addition, the noise level of the neutral polar solvent used is 1
Usually, the α-naphtholphthalenes and the dihalogeno aromatic compound.

Further, the total amount of the aromatic dihydroxy compound used as desired is 10 [1 part by weight, 1 [1 to 100
0! It is selected within a range of 1 parts.

In the method for producing an aromatic polyether polymer according to claim 2, the aromatic polyether polymer represented by the formula (m) or 1) and the halide formate represented by the formula (V) are combined. (for example, phenyl chloroformate) or an isocyanate represented by the formula (Vl) (for example, phenyl incyanate) to obtain the aromatic polyether polymer according to claim 1.

Specifically, for example, in the neutral polar solvent, the formula (
The aromatic polyether polymer represented by m) or (rV) and the halide formate represented by the above formula (V) or the °isocyanate represented by the above formula (■) are mixed simultaneously or separately as appropriate. Added to, usually O~
The reaction is carried out at a temperature of 50°C, preferably in the range of 20 to 40°C. If the reaction temperature is less than 0°C, the reaction rate is too slow to be practical, and if it exceeds 50°C, side reactions will occur. This is undesirable because it causes decomposition of palitoformate and isocyanate.

In addition, the reaction time in this reaction is usually 10 minutes:
It is 1 to 10 times + 11 J, preferably 1 to 5 hours.

The aromatic polyether polymer according to claim 1 obtained in this way is a high molecular weight polymer having a repeating unit represented by the formula (I) or formula (II), and
Its reduced viscosity is 0 when N-methylpyrrolidone is used as a solvent.
In a solution with a concentration of 2 g/di, the value measured at a temperature of 30° C. must be 0.1 dl/g or more. If the reduced viscosity is less than 0.1di/g, there is a risk that mechanical strength will be poor when used as a molding material or film.

The aromatic polyether polymer of this invention not only has excellent heat resistance, moldability, mechanical properties, and solvent resistance, but also has a high glass transition temperature (-Tg) and may emit fluorescence. It has the following characteristics and can be suitably used, for example, as display materials and materials for parts in various fields.

[Example] Next, an example of the present invention will be shown, and this IJI will be explained in more detail.

(Example 1) ■ -11-5 50.58 g of 2,6-cyfluoropenzonitrile (0,:16 mol), phenolphthalin II 5.32 g (0,:16
mol), potassium carbonate 82.1g (0,594 mol)
, N,N'-dimethylimidasisodinone (450 mJl) was added, and the temperature was raised from room temperature to 190°C over a period of 40 minutes while blowing argon gas and stirring, and the temperature was further maintained at this temperature for 75 minutes.

After cooling, the reaction solution was poured into water in which oxalic acid was dissolved to precipitate the polymer, which was then pulverized using a blender, and then washed with water three times and dried to obtain raw polymer powder 43. 0 g (yield 95%) was obtained.

This polymer has a reduced viscosity of 0.25 d/g (:10
°C, N-methylpyrrolidone, 0.2 g/dJla degree),
The glass transition temperature was 212°C, and the thermal decomposition start temperature was 390°C (5% weight loss in air).

In addition, according to NMR measurement and IR measurement, this polymer has the following properties:
It was confirmed that it was an aromatic polyether having the following spelling unit.

This product has a reduced viscosity of 0.42 db/g (:10
°C, N-methylpyrrolidone solvent, 0.2 g/d degree C)
,Glass-transition temperature! 66℃, /8 decomposition start temperature 410℃
(5% weight reduction in air).

Moreover, it was confirmed by IR measurement that this polymer was an aromatic polyether having the repeating unit shown below.

20 g of the raw material mixture obtained in step ① above was dissolved in 80% of N-methylpyrrolidone, and 1% of phenylchloroformate was dissolved.
1.25 g was added slowly. The temperature inside the flask rose from 20°C to 43°C, and gas was generated violently. The mixture was left at room temperature for 4 hours with stirring.

Next, the reaction solution was poured into 1 liter of methanol, and the precipitated solid was washed three times with 1 liter of methanol and dried to obtain 21.8 g of product powder (yield: 92%).

The infrared absorption spectrum of this polymer is shown in FIG.

Furthermore, when the fluorescence of this aromatic polyether polymer was measured, an emission spectrum with a maximum at 4650- was obtained.

The absorption maximum wavelength was 400 nm.

(Example 2) Phenyl chloroformate 11.25 used in the production of aromatic polyether polymer in Example 1
The same procedure as in Example 1 was repeated except that 8.5 g of phenyl isocyanate was used instead of 20.8 g of the product.
g (yield 88%) was obtained.

This product has a reduced viscosity of 0.4 d/g (30°C, N
-Methylpyrrolidone solvent, 0.2 g/dic degree), glass transition temperature 195°C, thermal decomposition onset temperature 405°C (5% weight loss in air).

Furthermore, it was confirmed by IR measurement that this polymer was an aromatic polyether having the following edge-turning unit.

The infrared absorption spectrum of this polymer is shown in FIG.

Furthermore, when the fluorescence of this aromatic polyether polymer was measured, an emission spectrum with a maximum at 4650- was obtained.

The maximum absorption wavelength was 400 nm.

(Example 3) 11.25 g of phenyl chloroformate used in the production of aromatic polyether polymer in Example 1
The same procedure as in Example 1 was repeated except that 8.61 g of cyclohexyl isocyanate was used instead of cyclohexyl isocyanate to obtain 19.9 g of product (yield: 84%).

This product has a reduced viscosity of 0.36 db/g (at 10℃
, N-methylpyrrolidone solvent, 0.2 g/clQ concentration)
, glass transition temperature 292°C, thermal decomposition onset temperature 397°C (
In the air, 5% II! amount).

Furthermore, it was confirmed from the RJ111 test that this polymer was an aromatic polyether having the repeating units shown below.

When the light was measured, an emission spectrum with a maximum at 465n- was obtained.

The maximum absorption wavelength was 40 n-.

(Example 4) ■4.4'-
Dichlorodiphenylsulfone 104.4 g (0.36 mol), phenolphthalin i 1512 g (0.:16 mol), potassium carbonate (tl, 5!14 mol) N, N'-
450 μl of dimethyl-f midazolidinone was added, and the temperature was raised from room temperature to 195° C. over 40 minutes. Here, 5 ml of toluene was added to the reaction system, and the filtrate produced by refluxing the toluene was removed from the system over a period of 90 minutes.
Toluene was removed, and heating and stirring was continued at this temperature for an additional 3 hours.

After cooling, the reaction solution was poured into water in which oxalic acid had been dissolved to precipitate the polymer, which was then pulverized with a blender, and then washed with water three times and dried to obtain a raw polymer powder of 185.7 kg. g (yield 96%) was obtained.

This polymer has a reduced viscosity of 0.48 d/g (: 10°C,
N-methylpyrrolidone, 0.2g/dl (8 degrees), glass transition temperature 235°C, thermal decomposition onset temperature 433°C (5% weight loss in air).

Furthermore, it was confirmed from the NMR and IRJII measurements that this polymer was an aromatic polyether having the following repeating unit.

20 g of the raw material polymer obtained in the above step 1 of (1)-Bole Ale was dissolved in 100 ml of N-methylpyrrolidone, and 10 g of phenyl chloroformate was slowly added thereto. The temperature inside the flask is 2
The temperature rose from 0°C to about 40°C, and gas was generated violently.

The mixture was left at room temperature for 4 hours with stirring.

Next, the reaction solution was poured into methanol lfi, and the precipitated solid was washed three times with one liter of methanol and dried to obtain a product powder 1'+, sg (yield: 85%).

This product has a reduced viscosity of 0.59 db/g (30°C,
N-methylpyrrolidone solvent, 0-28/di concentration), glass transition temperature of 185°C, and thermal decomposition onset temperature of 445°C (in air, 5% ffi amount reduction).

Furthermore, IR measurement confirmed that this polymer was an aromatic polyether having the repeating units shown below.

Furthermore, when the fluorescence of this aromatic polyether polymer was measured, an emission spectrum with a maximum at 470 mm was obtained.

The maximum absorption wavelength was 410 rv.

(Example 5) The same procedure as in Example 3 was repeated except that 12.0 g of phenyl isocyanate was used in place of the phenyl chloroformate IO, Og used in the production of the aromatic polyether polymer in Example 3. 20.99 g of product (
A yield of 92%) was obtained.

This product has a reduced viscosity of 0.53 dl/g (30
°C1N-methylpyrrolidone solvent, 0.2 g/dl concentration), glass transition temperature 216 °C, thermal decomposition onset temperature 438
℃ (5% weight loss in air).

Furthermore, it was confirmed from the IRD determination that this polymer was an aromatic polyether having the green-turning unit shown below.

Furthermore, when the fluorescence of this aromatic polyether polymer was measured, an emission spectrum having a maximum at 470n- was obtained.

The maximum absorption wavelength was 410 nm.

[Effects of the Invention] According to the present invention, (1) In addition to being excellent in heat resistance, mechanical properties, and fiJ solvent properties, it has no carboxyl group in the repeating unit, and has excellent stability during molding. (2) It also emits fluorescence (blue), making it possible to create a new polymer useful as an engineering resin, material for various parts, and display material.

(3) A polymer with such unique properties, -
IF using raw materials that are easily available as V-terminals.
I? An object of the present invention is to provide an aromatic polyether polymer having advantages such as being able to be efficiently produced by rL operation, and a method for producing the same.

[Brief explanation of the drawing]

FIGS. 1 and 2 are infrared absorption spectra of an example of the aromatic polyether polymer of the present invention, respectively. − “Continued correction horoscope

Claims (2)

[Claims] (1) The following formula (I); ▲There are mathematical formulas, chemical formulas, tables, etc.▼(I) or the following formula (II), ▲There are mathematical formulas, chemical formulas, tables, etc.▼(II) [However, formula (I), In (II), Y is CN ▲There are mathematical formulas, chemical formulas, tables, etc.▼ or ▲There are mathematical formulas, chemical formulas, tables, etc.▼, and Z is -COOR^7 or -CONHR^8 (R^7,
R^8 is an alkyl group having 1 to 6 carbon atoms, a cycloalkyl group having 3 to 8 carbon atoms, or an aryl group having 6 to 8 carbon atoms. ), and R^1, R^2, R^4 and R^5 are
an alkyl group having 1 to 6 carbon atoms or 6 to 8 carbon atoms, respectively;
is an aryl group, and R^3 and R^6 have 1 to 1 carbon atoms.
6 alkyl group, an aryl group having 6 to 8 carbon atoms, a carboxyl group, and a halogen atom, m, n,
q and r are each 0 and an integer from 1 to 3, and p and s are 0 and an integer from 1 to 4, respectively. ] An aromatic compound having a repeating unit represented by the following and having a reduced viscosity of 0.1 dl/g or more at a temperature of 30°C in a solution with a concentration of 0.2 g/dl using N-methylpyrrolidone as a solvent. Polyether polymer. (2) The following formula (III); ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (III) or the following formula (IV); ▲ There are mathematical formulas, chemical formulas, tables, etc. ▼ (IV) [However, formula (III), In (IV), Y is ▲There are mathematical formulas, chemical formulas, tables, etc.▼ or ▲There are mathematical formulas, chemical formulas, tables, etc.▼, and R^1, R^2, R^4, and R^5 are each carbon It is an alkyl group having 1 to 6 carbon atoms or an aryl group having 6 to 8 carbon atoms, and R^3 and R^6 are an alkyl group having 1 to 6 carbon atoms, an aryl group having 6 to 8 carbon atoms, a carboxyl group, and a halogen atom. m, n, q and r are each 0 and any integer from 1 to 3, and p
and s are 0 and any integer from 1 to 4, respectively. ], and has a repeating unit represented by N-
An aromatic polyether polymer having a reduced viscosity of 0.1 dl/g or more at 30°C in a solution of 0.2 g/dl concentration using methylpyrrolidone as a solvent, and the following formula (V); R^7
OCOX (V) or the following formula (VI); R^8NCO (VI) [However, in formulas (V) and (VI), R^7 and R^8 are alkyl groups having 1 to 6 carbon atoms, and 3 carbon atoms -8 cycloalkyl group or C6-8 aryl group. ] The method for producing an aromatic polyether polymer according to claim 1, characterized in that the aromatic polyether polymer is reacted with a compound represented by the following.