CN115340673B - Light-stable type polyphenylsulfone resin and preparation method thereof - Google Patents
Light-stable type polyphenylsulfone resin and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a light-stable type polyphenylsulfone resin and a preparation method thereof, belonging to the technical field of polysulfone materials. The technical scheme is as follows: firstly preparing an acid-binding agent K/SnO through microwave reaction 2 and/PCN-222, and reacting with 4,4 '-dihydroxybiphenyl, 4,4' -dichlorodiphenyl sulfone and a solvent by using an acid binding agent to prepare the light-stable type polyphenylsulfone resin. The invention solves the defect that the traditional acid-binding agent is hardly dissolved in a reaction solvent, enhances the reaction activity of potassium ions while realizing a homogeneous reaction, can greatly improve the reaction rate of 4,4 '-dihydroxybiphenyl, and reduces the residual quantity of 4,4' -dihydroxybiphenyl to below 50ppm, so that the photostability of a polyphenylsulfone product is improved.
Description
Technical Field
The invention relates to the technical field of polysulfone materials, in particular to a light-stable type polyphenylsulfone resin and a preparation method thereof.
Background
Polyphenylene Sulfone (PPSU), also known as polyphenylene sulfone resin, is a non-crystalline thermoplastic engineering plastic prepared by polycondensation of aromatic ring sulfuryl chloride and aromatic ring. As a molecular chain contains a large amount of biphenyl, the heat resistance of the polyphenylsulfone is more outstanding, and the polyphenylsulfone also has good transparency and hydrolytic stability, is one of special engineering plastics with excellent comprehensive performance, and is widely applied to the fields of medical appliances, aviation industry, automobiles, petroleum machinery, high-temperature equipment, plastic feeding bottles, electronic cigarettes and the like.
The traditional polyphenylsulfone synthesizing process is usually one-step polymerization process, and the one-step polymerization process mainly includes polymerization process and product purification process.
(1) The polymerization process comprises the following steps: 4,4 '-dihydroxydiphenyl, 4,4' -dichlorodiphenyl sulfone, bisphenol A, bisphenol S or biphenol, potassium carbonate or bicarbonate, sodium carbonate, etc., in a solvent such as dimethyl sulfoxide, N-dimethylformamide, N-dimethylacetamide, N-methylpyrrolidone, etc. Because dimethyl sulfoxide contains sulfone groups, the solvent has excellent thermal stability and is more suitable for synthesizing sulfone materials. The process can select toluene, xylene and the like as dehydrating agents.
(2) The purification process of the polymer comprises the following steps: and slowly pouring the polymerized liquid after the polymerization into water or alcohol for precipitation, so that the polyphenylsulfone is separated from the polymer solution. The separated polysulfone is boiled in high-temperature water to remove salt, and then the polysulfone is dried, granulated and the like.
However, 4,4' -dihydroxy biphenyl for synthesizing polyphenylsulfone has high activity, phenolic hydroxyl is easier to absorb ultraviolet light at the para position of biphenyl, and phenomena such as product aging, discoloration and the like occur. In the traditional polyphenylsulfone polymerization process, an acid-binding agent is hardly dissolved in a reaction solvent, the reaction activity of potassium carbonate and sodium carbonate is low, the polymerization reaction is inevitably incomplete, a trace amount of 4,4' -dihydroxybiphenyl remains on the surface and the inside of the polyphenylsulfone resin, meanwhile, water is usually used as an extracting agent in the purification process and cannot dissolve a phenolic monomer, and ethanol can dissolve the phenolic monomer but cannot completely wash the part wrapped in the product. Finally, the product is rapidly aged under illumination, and the color of the resin is obviously changed in a short time. The polyphenylsulfone powder changed from white to blue-gray, and the melt bars became opaque, affecting the appearance of the injection molded product. The analysis and detection after the continuous repeated extraction and concentration of the polyphenylsulfone resin shows that the residual content range of 4,4' -dihydroxybiphenyl is 800-1000ppm.
Therefore, it is necessary to develop a new synthesis process to control the residual content of 4,4' -dihydroxybiphenyl in polyphenylsulfone resin to be less than 50ppm so as to solve the above-mentioned fundamental problems.
Disclosure of Invention
The technical problem to be solved by the invention is as follows: the defects of the prior art are overcome, the light-stable type polyphenylsulfone resin and the preparation method thereof are provided, the method belongs to the first application of an MOF type acid-binding agent in a polyphenylsulfone resin synthesis process in China, the defect that the traditional acid-binding agent is almost insoluble in a reaction solvent is overcome, the reaction activity of potassium ions is enhanced while the acid-binding agent can realize a homogeneous reaction, the reaction rate of 4,4 '-dihydroxybiphenyl can be greatly improved, the residual quantity of 4,4' -dihydroxybiphenyl is reduced to below 50ppm, and the light stability of a polyphenylsulfone product is improved.
The technical scheme of the invention is as follows:
in one aspect, the invention provides a preparation method of a light-stable type polyphenylsulfone resin, which comprises the following steps:
S1 K/SnO 2 preparation of/PCN-222 acid-binding agent
Preparation of S11 PCN-222 Crystal (structure shown in FIGS. 1-2)
ZrOCl 2 ·8H 2 O and H 4 TCPP (meso-tetra (4-carboxyphenyl) porphine) is added to DMF solvent, and CF is added 3 COOH, transferring to a reaction container after ultrasonic treatment, heating the reaction container, and cooling to room temperature to obtain PCN-222 crystal; washing the crystal by using a DMF solvent, soaking the crystal by using the MeOH solvent to exchange DMF, and finally drying the crystal;
S12 Sn 2+ preparation of/PCN-222
Mixing PCN-222 crystal with SnCl 2 ·2H 2 Placing O in a microwave reactor, adding MeCN, reacting, cooling to room temperature to obtain Sn 2+ /PCN-222; washing with DMF and MeOH respectively, and drying to obtain Sn 2+ /PCN-222；
S13 K/SnO 2 Preparation of/PCN-222 acid-binding agent
Sn is added 2+ Putting the/PCN-222 in a microwave reactor, adding MeCN and KCl, reacting, cooling to room temperature to obtain K/SnO 2 /PCN-222; washing with MeOH, and finally drying;
preparation of S2 light-stable type polyphenylsulfone resin
S21 polymerization
4,4 '-dihydroxydiphenyl, 4,4' -dichlorodiphenyl sulfone, solvent and K/SnO prepared in step S13 2 The PCN-222 acid-binding agent is put into a reactor and reacts under the protection of nitrogen, the reaction temperature is 160-190 ℃, the reaction time is 2-3h, the solvent extraction amount is 100-200ml, and the solvent addition amount is 70-150ml; after the reaction is finished, cooling and diluting the polymerization solution by using a solvent to obtain a polyphenylsulfone polymerization solution;
s22 post-processing
And (3) filtering the polyphenylsulfone polymer solution prepared in the step (S21) to remove byproducts, crushing the filtrate, boiling in water, purifying and washing to remove residual solvents in the product, and drying powder of the product to obtain the light-stable polyphenylsulfone resin.
The acid-binding agent prepared by the invention is K/SnO 2 the/PCN-222 is prepared by using porous MOF as a carrier and selecting SnO 2 As a medium, the low-valence oxidation state is alkaline, and the metal nano-particles with single atom K are loaded on MOFs to prepare the metal nano-particles. K/SnO 2 the/PCN-222 metal organic framework material is different from a common MOF catalyst, the micro appearance of the material is a regular hexagon, K is taken as an active center, and SnO is 2 The structure is intended to enhance the reactivity to metal ions only as an intermediate, and the crystal has a hexahedral main axis.
Preferably, in step S11, zrOCl 2 ·8H 2 O and H 4 The molar ratio of TCPP is 8.7-9.2:1-1.1.
Preferably, in step S12, PCN-222 and SnCl are performed 2 ·2H 2 The molar ratio of O is 1-1.05:32-33.5.
Preferably, in step S13, sn 2+ The mol ratio of/PCN-222 to MeCN and KCl is 0.2-0.26:1-1.1:3.45-3.65.
Preferably, in step S21, the molar ratio of 4,4 '-dihydroxybiphenyl, 4,4' -dichlorodiphenyl sulfone to the acid-binding agent is 1:1-1.01:1.1-1.15.
Preferably, in step S21, the solvent is N-methylpyrrolidone or N, N-dimethylacetamide.
Preferably, in step S21, the mass ratio of the total mass of 4,4 '-dihydroxybiphenyl and 4,4' -dichlorodiphenyl sulfone added in the polymerization reaction to the solvent is 40-45%.
On the other hand, the invention also provides the light-stable type polyphenylsulfone resin prepared by the preparation method.
Compared with the prior art, the invention has the following beneficial effects:
1. the acid-binding agent prepared by the invention can be completely dissolved in a reaction solvent to form a homogeneous reaction, the monomer conversion rate is greatly improved, the 4,4 '-dihydroxybiphenyl reaction influencing the color of the polyphenylsulfone product is more complete, the 4,4' -dihydroxybiphenyl residue in the polyphenylsulfone product is reduced from 1000ppm to less than 50ppm, and the polyphenylsulfone product can still keep excellent light stability under illumination.
2. Compared with the method that metal atoms are directly used as an acid-binding agent, the acid-binding agent prepared by the invention uses porous material MOF as a carrier and selects SnO 2 As a medium, the low-valence oxidation state is alkaline, and the single-atom K metal nanoparticles are loaded on MOFs, so that the intermolecular collision probability and the reaction activity of K ions and phenolic hydroxyl groups can be increased by utilizing the porous property, and the stability and the strong interaction of a high-acid-binding agent can be provided, the moisture absorption is difficult, and the storage is easy. K/SnO before and after reacting the invention with 4,4 '-dihydroxydiphenyl and 4,4' -dichlorodiphenyl sulfone 2 the/PCN-222 acid-binding agent is characterized by internal analysis through infrared spectroscopy, as shown in figure 4-5, at the wavelength of 1000 cm -1 The K-N external contraction vibration peak does not obviously change along with the reduction of the potential, which shows that K/SnO 2 The (basic) stability of the/PCN-222 in the current conventional solution polymerization environment is good. K/SnO 2 The high-efficiency catalytic performance of the/PCN-222 is mainly derived from SnO in the PCN-222 framework 2 The ' K center ' in the ligand increases the reaction activity of K ions, and the structure has higher regioselectivity and stereoselectivity to aromatic, aliphatic, end chain and inner chain, thereby enhancing the ' interaction ' of two parties of the ' -OH ' functional groups of 4,4' -dihydroxybiphenyl.
3. The acid-binding agent prepared by the invention is very easy to dissolve in water and a solvent, so that the problems that by-products, namely potassium chloride and sodium chloride are suspended in a reaction solution as solid particles to cause corrosion, scaling and accumulation on reaction equipment, and polyphenylsulfone is difficult to remove thoroughly after purification and is wrapped in resin to cause high ash content in the conventional acid-binding agent are thoroughly solved.
Drawings
In order to more clearly illustrate the embodiments or technical solutions in the prior art of the present invention, the drawings used in the description of the embodiments or prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained based on these drawings without creative efforts.
FIG. 1 shows PCN-222 (Zr) of the present invention 6 (μ 3 -OH) 8 (OH) 8 (TCPP) 2 ) A frame diagram of (1).
FIG. 2 shows PCN-222 (Zr) of the present invention 6 (μ 3 -OH) 8 (OH) 8 (TCPP) 2 ) The structure of the Zr-oxo cluster of (1).
FIG. 3 shows K/SnO of the present invention 2 Schematic diagram of microwave-assisted synthesis scheme of/PCN-222.
FIG. 4 shows K/SnO before reaction 2 An infrared spectrum of the/PCN-222 acid-binding agent.
FIG. 5 shows K/SnO after reaction 2 An infrared spectrum of the/PCN-222 acid binding agent.
Detailed Description
The present invention is further illustrated by the following examples, but the scope of the present invention is not limited thereto, and modifications of the technical solutions of the present invention by those skilled in the art should be within the scope of the present invention.
The test method comprises the following steps: the invention adopts high performance liquid chromatography to obtain the residual content of 4,4' -dihydroxybiphenyl.
4,4 '-dihydroxybiphenyl used in the following examples is, unless otherwise specified, all commercially available conventional 4,4' -dihydroxybiphenyl; the processes used in the following examples are conventional in the art unless otherwise specified.
The acid-binding agents of the following examples were prepared by the following methods:
S1 K/SnO 2 preparation of/PCN-222 acid-binding agent (shown in figure 3)
Preparation of S11 PCN-222 Crystal
108.6mg of ZrOCl 2 ·8H 2 O and 30mg of H 4 TCPP (meso-tetrakis (4-carboxyphenyl) porphine) was added to 10mL of DMF solvent followed by 0.45mL of CF 3 COOH, performing ultrasonic treatment for 5min, transferring the mixture into a borosilicate bottle, putting the borosilicate bottle into a blast oven, heating the borosilicate bottle for 8h at 120 ℃, and cooling the borosilicate bottle to room temperature to obtain PCN-222 crystals; washing the crystals three times with DMF solvent and soaking the crystals in MeOH solvent for exchange DMF for three days, and finally drying the crystal in a vacuum oven at 60 ℃ to obtain a PCN-222 crystal (the structure is shown in figure 1);
S12 Sn 2+ preparation of/PCN-222
20mg of PCN-222 crystal and 60mg of SnCl 2 ·2H 2 Placing O in a microwave reactor, adding 3mL of MeCN, reacting at 85 ℃ for 30min, and cooling to room temperature to obtain Sn 2+ /PCN-222; washing with DMF and MeOH for three times, and drying in vacuum oven at 60 deg.C to obtain Sn 2+ /PCN-222；
S13 K/SnO 2 Preparation of/PCN-222 acid-binding agent
20mg of Sn 2+ the/PCN-222 is put in a microwave reactor, 2mL of MeCN and 10mg of KCl are added, the reaction is carried out for 30min at the temperature of 100 ℃, and the K/SnO is obtained after the temperature is reduced to the room temperature 2 /PCN-222; washed three times with MeOH and finally dried in a vacuum oven at 60 ℃.
Example 1
In the presence of condensing, N 2 In a 1L four-neck flask with protection, stirring and temperature sensing, 0.5mol of 4,4 '-dihydroxybiphenyl, 0.51mol of 4,4' -dichlorodiphenyl sulfone and 0.525mol of acid-binding agent K/SnO are added 2 the/PCN-222 was added to 229mL of N, N-dimethylacetamide. Heating to 160 ℃, extracting and supplementing N, N-dimethylacetamide when the temperature reaches 160 ℃, supplementing 70mLN and N-dimethylacetamide at constant speed within 1h, extracting 100 mL of N, N-dimethylacetamide at constant speed within 1.5h, and extracting the extracted solvent every 0.5h during the period to test the water content (water content)<1.5%) and the reaction was stopped for 3h starting from the temperature of 160 ℃. The polyphenylene sulfone was cooled with 190ml of 60 ℃ N, N-dimethylacetamide solvent, diluted with 500ml of 60 ℃ N, N-dimethylacetamide solvent, and stirred for 1 hour to obtain a polyphenylene sulfone polymerization solution. Filtering the polyphenylsulfone polymerization solution for three times, crushing the filtered filtrate, washing the crushed polyphenylsulfone with 3L of demineralized water at 100 ℃ for 1h, repeatedly washing for three times, then washing with 3L of ethanol at 70 ℃ for 1h, repeatedly washing for three times, filtering the polyphenylsulfone powder, and drying in a drying oven at 140 ℃ for 8h to obtain the light-stable polyphenylsulfone product.
Example 2
In the presence of condensate, N 2 In a 1L four-neck flask with protection, stirring and temperature sensing, 0.5mol of 4,4 '-dihydroxydiphenyl, 0.51mol of 4,4' -dichlorodiphenyl sulfone and 0.525mol of an acid-binding agent K/SnO are added 2 the/PCN-222 was added to 219mL of N-methylpyrrolidone. Heating to 190 deg.C, collecting and supplementing N-methylpyrrolidone when the temperature reaches 190 deg.C, supplementing 110mL of N-methylpyrrolidone at constant speed within 1h, collecting 150mL of N-methylpyrrolidone at constant speed within 1.5h, and collecting water content (water content) in the solvent test solvent every 0.5h<1.5%) and the reaction was stopped for 2.5h, counting from the temperature of 190 ℃. Cooling with 190ml of 60 ℃ N-methylpyrrolidone solvent, diluting with 500ml of 60 ℃ N-methylpyrrolidone solvent, and stirring for 1h to obtain the polyphenylsulfone polymerization solution. Filtering the polyphenylsulfone polymerization solution for three times, crushing the filtered filtrate, washing the crushed polyphenylsulfone with 3L of demineralized water at 100 ℃ for 1h, repeatedly washing for three times, then washing with 3L of ethanol at 70 ℃ for 1h, repeatedly washing for three times, filtering the polyphenylsulfone powder, and drying in a drying oven at 140 ℃ for 8h to obtain the light-stable polyphenylsulfone product.
Example 3
In the presence of condensing, N 2 In a 1L four-neck flask with protection, stirring and temperature sensing, 0.5mol of 4,4 '-dihydroxydiphenyl, 0.51mol of 4,4' -dichlorodiphenyl sulfone and 0.575mol of an acid-binding agent K/SnO are put into 2 the/PCN-222 was added to 219mL of N-methylpyrrolidone. Raising the temperature to 190 ℃, starting to extract and replenish N-methylpyrrolidone when the temperature reaches 190 ℃, replenishing 150 mLN-methylpyrrolidone at a constant speed within 1h, extracting 200mL of N-methylpyrrolidone at a constant speed within 1.5h, and taking the water content (water content) in the extracted solvent test solvent every 0.5h<1.5%) and the reaction was stopped for 2h starting from the temperature of 190 ℃. Cooling with 190ml of 60 ℃ N-methylpyrrolidone solvent, diluting with 500ml of 60 ℃ N-methylpyrrolidone solvent, and stirring for 1h to obtain the polyphenylsulfone polymerization solution. Filtering the polymerization solution for three times, pulverizing the filtered filtrate, washing pulverized polyphenylsulfone with 3L of desalted water at 100 deg.C for 1 hr, washing for three times, and adding 3L of ethanol at 70 deg.CWashing for 1h, repeating the washing for three times, filtering the polyphenylsulfone powder, and drying in an oven at 140 ℃ for 8h to obtain the light-stable polyphenylsulfone product.
Example 4
In the presence of condensing, N 2 In a protected, stirred and temperature-sensing 1L four-neck flask, 0.5mol of 4,4 '-dihydroxybiphenyl, 0.55mol of 4,4' -dichlorodiphenyl sulfone and 0.575mol of acid-binding agent K/SnO2/PCN-222 are added into 219mL of N-methylpyrrolidone. Raising the temperature to 190 ℃, starting to extract and supplement N-methylpyrrolidone when the temperature reaches 190 ℃, supplementing 150 mLN-methylpyrrolidone at a constant speed within 1h, extracting 200mL of N-methylpyrrolidone at a constant speed within 1.5h, and taking the extracted solvent every 0.5h during the period to test the water content (water content)<1.5%) and the reaction was stopped for 2h starting from the temperature of 190 ℃. Cooling with 190ml of 60 ℃ N-methylpyrrolidone solvent, diluting with 500ml of 60 ℃ N-methylpyrrolidone solvent, and stirring for 1h to obtain the polyphenylsulfone polymerization solution. Filtering the polymerization solution for three times, crushing the filtered filtrate, washing the crushed polyphenylsulfone for 1h at 100 ℃ by using 3L of desalted water, repeatedly washing for three times, then washing for 1h at 70 ℃ by using 3L of ethanol, repeatedly washing for three times, filtering the polyphenylsulfone powder, and drying in a drying oven at 140 ℃ for 8h to obtain the light-stable polyphenylsulfone product.
Comparative example 1 (traditional acid-binding agent)
Comparative example 1 differs from example 2 in that: comparative example 1 uses acid-binding agent potassium carbonate (K) 2 CO 3 ) Instead of the acid scavenger K/SnO of example 2 2 The product of the final polyphenylsulfone is changed from pure white powder to gray powder when being exposed to light. This shows that the traditional acid-binding agent causes large residual amount of 4,4' -dihydroxybiphenyl, and causes the light stability of the polyphenylsulfone resin synthesized by the traditional process to be extremely poor.
Comparative example 2 (acid-binding agent K/PCN-222)
Comparative example 2 differs from example 2 in that: comparative example 2 acid scavenger K/PCN-222 was used instead of acid scavenger K/SnO of example 2 2 and/PCN-222 to obtain the light-stable polyphenylsulfone product.
The polyphenylsulfones synthesized in examples 1-4 and comparative examples 1-2 were tested for the residual amount of 4,4' -dihydroxybiphenyl by HPLC, and the data are shown in table 1:
TABLE 1 residual content of 4,4' -dihydroxybiphenyl in polyphenylsulfone
| Serial number | Acid-binding agent | 4,4' -dihydroxybiphenyl residual content/ppm |
| Example 1 | K/SnO 2 /PCN-222 | 12 |
| Example 2 | K/ SnO 2 /PCN-222 | 8 |
| Example 3 | K/ SnO 2 /PCN-222 | 7 |
| Example 4 | K/ SnO 2 /PCN-222 | 7 |
| Comparative example 1 | K 2 CO 3 | 1056 |
| Comparative example 2 | K/PCN-222 | 766 |
As can be seen from Table 1, the data analysis of examples 1 to 4 of the present invention shows that the use of the raw material and the acid-binding agent of the present invention can successfully and stably reduce the 4,4' -dihydroxybiphenyl content in polyphenylsulfone resin to 50ppm or less.
From the comparison of the data of comparative example 1 and example 2, it can be seen that the conventional acid-binding agent K 2 CO 3 Due to the physical and chemical characteristics of heterogeneous reaction, the content of 4,4' -dihydroxybiphenyl in the polyphenylsulfone resin is about 1000ppm. As can be seen from comparison of comparative example 2 with the data of example 2, comparative example 2 employs the acid scavenger K/PCN-222, which lacks SnO due to the fact that only PCN-222 is used as a skeleton 2 As a carrier of K ions, the metal activity of the K ions cannot be exerted, the reaction activity is greatly reduced, and finally, the content of 4,4' -dihydroxybiphenyl in the polyphenylsulfone resin is about 760ppm, so that the benefit effect is extremely limited.
Although the present invention has been described in detail by referring to the drawings in connection with the preferred embodiments, the present invention is not limited thereto. Various equivalent modifications or substitutions can be made on the embodiments of the present invention by those skilled in the art without departing from the spirit and scope of the present invention, and these modifications or substitutions are within the scope of the present invention/any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. The preparation method of the light-stable type polyphenylsulfone resin is characterized by comprising the following steps:
S1 K/SnO 2 preparation of/PCN-222 acid-binding agent
Preparation of S11 PCN-222 crystal
ZrOCl 2 ·8H 2 Adding O and meso-tetra (4-carboxyphenyl) porphine to DMF solvent, and adding CF 3 COOH, transferring to a reaction container after ultrasonic treatment, heating the reaction container, and cooling to room temperature to obtain PCN-222 crystal; washing the crystal by using a DMF solvent, soaking the crystal by using the MeOH solvent to exchange DMF, and finally drying the crystal;
S12 Sn 2+ preparation of/PCN-222
Mixing PCN-222 crystal with SnCl 2 ·2H 2 Placing O in a microwave reactor, adding MeCN, reacting, cooling to room temperature to obtain Sn 2+ /PCN-222; washing with DMF and MeOH respectively, and drying to obtain Sn 2+ /PCN-222；
S13 K/SnO 2 Preparation of/PCN-222 acid-binding agent
Sn is added 2+ Placing the/PCN-222 in a microwave reactor, adding MeCN and KCl, reacting, cooling to room temperature to obtain K/SnO 2 /PCN-222; washing with MeOH, and finally drying;
preparation of S2 light-stable type polyphenylsulfone resin
S21 polymerization
4,4 '-dihydroxydiphenyl, 4,4' -dichlorodiphenyl sulfone, solvent and K/SnO prepared in step S13 2 Placing the PCN-222 acid-binding agent into a reactor, and reacting under the protection of nitrogen, wherein the reaction temperature is 160-190 ℃, the reaction time is 2-3h, the extraction amount of the solvent is 100-200ml, and the addition amount of the solvent is 70-150ml; after the reaction is finished, cooling and diluting the polymerization solution by using a solvent to obtain a polyphenylsulfone polymerization solution; the solvent is N-methyl pyrrolidone or N, N-dimethyl acetamide;
s22 post-processing
And (3) filtering the polyphenylsulfone polymer solution prepared in the step (S21) to remove byproducts, crushing the filtrate, boiling in water, purifying and washing to remove residual solvents in the product, and drying powder of the product to obtain the light-stable polyphenylsulfone resin.
2. The method of claim 1, wherein ZrOCl is added in step S11 2 ·8H 2 O and H 4 The molar ratio of TCPP is 8.7-9.2：1-1.1。
3. The method of claim 1, wherein in step S12, PCN-222 and SnCl are combined 2 ·2H 2 The molar ratio of O is 1-1.05:32-33.5.
4. The method of claim 1, wherein in step S13, sn is added to the mixture 2+ The mol ratio of/PCN-222 to MeCN and KCl is 0.2-0.26:1-1.1:3.45-3.65.
5. The method of claim 1, wherein in step S21, the molar ratio of 4,4 '-dihydroxybiphenyl to 4,4' -dichlorodiphenyl sulfone to the acid-binding agent is 1:1-1.01:1.1-1.15.
6. The method of claim 1, wherein the ratio of the total mass of 4,4 '-dihydroxybiphenyl and 4,4' -dichlorodiphenyl sulfone added in the polymerization reaction to the mass of the solvent is 40-45% in step S21.
7. A light-stable polyphenylsulfone resin produced by the production method as claimed in any one of claims 1 to 6.
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