WO2014101564A1 - 一种纤维级聚苯硫醚树脂的合成方法 - Google Patents
一种纤维级聚苯硫醚树脂的合成方法 Download PDFInfo
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- WO2014101564A1 WO2014101564A1 PCT/CN2013/086096 CN2013086096W WO2014101564A1 WO 2014101564 A1 WO2014101564 A1 WO 2014101564A1 CN 2013086096 W CN2013086096 W CN 2013086096W WO 2014101564 A1 WO2014101564 A1 WO 2014101564A1
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/14—Polysulfides
- C08G75/16—Polysulfides by polycondensation of organic compounds with inorganic polysulfides
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G75/00—Macromolecular compounds obtained by reactions forming a linkage containing sulfur with or without nitrogen, oxygen, or carbon in the main chain of the macromolecule
- C08G75/02—Polythioethers
Definitions
- the present invention relates to a process for synthesizing a polyphenylene sulfide resin, and more particularly to a process for synthesizing a fiber-grade polyphenylene sulfide resin using a polycondensation aid having a special structure.
- Polyphenylene ketone also known as Polyphenylene Sulfide (abbreviated as PPS)
- PPS Polyphenylene Sulfide
- Polyphenylsulfuric acid is a special engineering plastic with excellent properties. It is the sixth after polycarbonate (PC), polyester (PET), polyoxymethylene (POM), nylon (PA) and polyphenylene ether (PPO). Large general engineering plastics, also one of the eight major aerospace materials. Due to the chemical structure of the atoms and the benzene ring, the polyphenylene ether gives the molecule a highly stable chemical bond. It has high temperature resistance, radiation resistance, flame retardancy, low viscosity, high dimensional stability, good solvent resistance and chemical resistance. Properties, excellent dielectric properties and wear resistance, the main physical and chemical properties are as follows:
- PPS has excellent thermal properties, its melting point exceeds 280 ° C, heat distortion temperature exceeds 260 ° C, short-term resistance to 260 ° C, and can be used at 200 ° C for a long time.
- the specially modified variety has a heat distortion temperature of over 350 °C and is one of the thermoplastic engineering plastics with the highest temperature.
- PPS polytetrafluoroethylene
- PPS has an oxygen index of 46 ⁇ 53, can burn on the flame, but will not drip, and self-extinguishing from the fire, the smoke rate is lower than the halogenated polymer, no need to add flame retardant Meets the high flame retardancy standard of UL-94V-0. If filled with fluororesin and carbon fiber lubricant, the friction and wear characteristics of PPS can be greatly improved.
- PPS can be processed by injection, molding and extrusion.
- the molding shrinkage and linear expansion coefficient are small, the water absorption rate is low, and its products are not easily deformed in high temperature and high humidity environment.
- Japan Torayin Club has conducted extensive research on the raw materials and processes of the sodium sulfide method and applied for a large number of Japanese patents (such as JP-A-2001-261832, JP-A-2002-265604, JP-A-2004-99684, JP-A-2005-54169, JP-A-2006-182993, JP-A-2007-9128, JP-A-2009-57414, JP-A-2010-53335, etc., US Patent (USP 4,286,018), International Patent (WO2006-059509), and Chinese Patent (CN200480015430.5)
- the polyhalogenated aromatic compound is usually 1,4-p-dichlorobenzene and 1,2,4-trichlorobenzene
- the sulfide is usually aqueous sodium sulfide
- the solvent is usually N-methyl
- the company's patent controls the process. It is also described in detail.
- the reaction process usually involves mixing and dehydrating organic solvents, sulfides, polyhalogenated aromatic compounds and condensation reaction aids at a temperature of 200-230 ° C, and at a temperature of 200-290 ° C.
- the PPS resin is produced by a condensation reaction.
- a polycondensation reaction is required in multiple stages, and the obtained PPS resin is suitable for extrusion molding.
- the polycondensation reaction aid sodium acetate is not involved. Separation or recycling issues.
- Sakamoto Wuyu Chemical Industry Forest Club has applied for a large number of patents for the synthesis of PPS resins with different properties (eg, JP-A-62-187731, JP-A-62-253626, JP-A-62-285922, special opening) Sho 63-39926, JP-A-6-145355, JP-A-8-183858, JP-A-2000-191785, JP-A-2004-244619, JP-A-2004-51732, for polyhalogenated aromatic compounds, 3 ⁇ 4 compounds, solvents and polycondensation
- the choice of the type of the reaction auxiliary is similar to that of the Torayin Society of Japan.
- the polycondensation reaction process usually adopts a two-stage reaction method to obtain a PPS resin which meets the requirements. If necessary, a polycondensation reaction aid is added at different stages of the polycondensation reaction, and the polycondensation reaction stage
- the 3 ⁇ 40/S molar ratio is usually greater than 1.0, and hydration is required in the later stage of the polycondensation reaction to achieve a H 2 0/S molar ratio of 2.5 3.0, which greatly increases the reaction pressure, thereby placing higher demands on the reaction apparatus.
- a similar PPS resin synthesis process is also mentioned in the patent CN88108247.3 filed by the company in China. In order to improve the performance of the final product, there are a large number of reports on the post-treatment of the product such as pickling.
- the polycondensation reaction described in Japanese Patent Application Laid-Open No. Hei 5-222196, JP-A-6-157756, JP-A-7-102065, JP-A-7-224165, JP-A-7-292107 The process also uses a two-stage reaction method.
- a cooling reflux device is added to the gas phase of the reactor to reduce degradation side reactions.
- Patent (USP 6,369,191, USP 6,600,009) to introduce a coolant into the cooling device at the top or inside of the reactor to reduce the pressure in the reactor at the end of the polycondensation reaction holding stage; at the end of the polycondensation reaction After that, the temperature is lowered to a certain temperature, and the slurry is subjected to acid treatment by adding acetic acid, oxalic acid, formic acid, chloroacetic acid, hydrochloric acid or sodium hydrogen sulfate.
- the crystallization temperature of the obtained PPS resin is greater than 220 ° C, and the whiteness is 50 to 65. Between, the viscosity is up to 240 poise.
- Japan is currently the main country producing PPS resins. Companies have systematically studied the polycondensation reaction process and post-treatment process, but there are few studies on the recovery of solvents and additives.
- the water-containing sodium raw material is usually solid and is easily oxidized during storage and transportation to produce various impurities, which is extremely disadvantageous for synthesizing high molecular weight PPS resin.
- Sodium hydrosulfide is in an aqueous solution state in a large concentration range, and is not easily oxidized during storage and transportation, so that it is easier to accurately measure. For this reason, various PPS resin manufacturers have also studied the polycondensation reaction process of sodium hydrosulfide as a raw material.
- the PPS oligomer is mixed with a small amount of sodium hydrosulfide, sodium hydroxide, p-dichlorobenzene and NMP, and then directly heated to carry out a polycondensation reaction, and after separation, a PPS product having a weight average molecular weight of about 2.5 10 4 is obtained, but the method is obtained.
- the yield is very low when synthesizing oligomers.
- the sodium hydrosulfide is mixed with hydrazine, and then heated and dehydrated. Then, the temperature is increased by adding p-dichlorobenzene to start the polycondensation reaction, and the hydrogenation is carried out at a temperature of 180 ° C.
- the sodium oxide solution controls the pH value of the reaction system, continues to raise the temperature to 230 ° C, replenishes the water (H 2 0/S molar ratio is usually greater than 2.0), and finally heats up to 260 ° C until the end of the reaction, and the reaction product is post-treated to obtain PPS. Resin.
- the dehydration process is similar to the sodium sulfide process, except that the reaction process of sodium hydrosulfide and sodium hydroxide is increased, and the sulfur in the dehydration stage is relatively poor due to the relatively stable stability of sodium hydrosulfide.
- the sodium hydride loss is usually between 1.0 3.5 mol%, which makes it difficult to synthesize high molecular weight PPS.
- the contents of the system are usually expressed as Na 2 S ⁇ NMP ⁇ 3 ⁇ 40 by empirical equations, but the researchers concluded by NMR analysis that the more accurate one should be sodium 4-methylamino-butyrate (Sodium4-(N) -Methylamino)-Butanoate (SMAB) is a mixture with sodium hydride, a mixture of SMAB-NaHS.
- SMAB-NaHS sodium 4-methylamino-butyrate
- the mixture can be obtained by mixing heating of SMAB and NaHS, or by mixing and heating NaHS, NaOH and NMP, and can also be easily reacted to obtain SMAB by heating by mixing NaOH and NMP.
- the polycondensation reaction aid commonly used in the literature reports is sodium acetate lithium chloride. Since sodium acetate and lithium chloride have low solubility in NMP, some of them will exist as solids after the reaction, and this part of sodium acetate or lithium chloride is difficult to separate from the reaction by-product sodium chloride; and acetic acid dissolved in NMP The sodium or lithium chloride is present as a salt and becomes a residue during the NMP distillation recovery process. Therefore, the conventional polycondensation reaction aids sodium acetate and lithium chloride are difficult to recycle. Summary of the invention
- the present invention provides a method for synthesizing a fiber-grade polyphenylene ether resin, which is simple in production process, and the polycondensation reaction aid can be recycled.
- a method for synthesizing a fiber-grade polyphenylene sulfide resin is a sodium hydrosulfide solution (hereinafter referred to as NaHS solution) and p-dichlorobenzene (hereinafter referred to as PDCB) as a raw material, N-methyl-2-pyrrolidone (hereinafter referred to as NMP is a solvent, and a C5 ⁇ C6 fatty acid salt is used as a polycondensation aid to be synthesized by a polycondensation reaction.
- NaHS solution sodium hydrosulfide solution
- PDCB p-dichlorobenzene
- NMP N-methyl-2-pyrrolidone
- a C5 ⁇ C6 fatty acid salt is used as a polycondensation aid to be synthesized by a polycondensation reaction.
- step (2) Add NaHS aqueous solution and NMP in the reaction vessel after the end of step (1), stir and nitrogen gas to heat up to 180 200 °C at a rate of 0.7 ⁇ 1.5 °C/min for deicing, until the water in the system The content is less than 1.0 mol/mol sulfur, and then the temperature is lowered to 140-160 ° C;
- step (3) Add PDCB and NMP to the reactor after the end of step (2), heat up to 220-240 °C in 1.0-1.5 hours, keep warm for 1-3 hours, and then heat up at 1.0 ⁇ 1.5 °C/min. To 260 ⁇ 280 °C, keep warm for 1 ⁇ 3 hours, keep warm, and cool down to 130 ⁇ 150 °C in 0.5 ⁇ 1 hours to get PPS reaction solution;
- the C5 to C6 fatty acid in the step (1) is preferably a mixture of hexanoic acid, valeric acid, isovaleric acid, 2-ethylbutyric acid and any ratio thereof.
- the raw material used in the step (1) is based on 1.0 mol% of NaHS, the total amount of C5-C6 fatty acid is 0.1 to 0.5 mol, the amount of NMP is 2.8 to 3.2 mol, and the amount of NaOH is 1.1 to 1.5 mol.
- the raw material used in the step (2) is based on 1.Omol NaHS, and after adding NaHS and NMP, the total NMP of the system is 3.2 to 3.6 mol.
- the raw material used in the step (3) is based on 1.0 mol of NaHS, and after adding PDCB and NMP, The amount of PDCB is 0.99 ⁇ 1.02mol, and the total NMP of the system is 4.3 ⁇ 4.7mol.
- the hydrochloric acid leaching process in the step (4) is based on a l.Omol polycondensation aid, and the amount of hydrochloric acid is 1.2 to 1.3 mol.
- the core of the invention is that the C5 C6 fatty acid salt formed by dehydrating C5 ⁇ C6 fatty acid together with sodium hydroxide is a condensation reaction auxiliary agent, and the solubility of C5 C6 fatty acid salt in NMP is higher than that of inorganic acid salt such as lithium chloride. Short-chain fatty acid salts such as sodium acetate are preferred, and thus the polycondensation reaction can be better promoted. After the reaction is completed, the C5 C6 fatty acid salt is completely dissolved in the NMP, and after filtration, all of it enters the filtrate, and is acidified by hydrochloric acid to become a free fatty acid.
- the C5 ⁇ C6 fatty acids used in the present invention can form azeotrope with water and have low solubility in water, so that C5 ⁇ C6 fatty acids can be recovered from the filtrate by azeotropy with water, thereby The problem that the auxiliary agent and the sodium chloride are both dissolved in water and cannot be separated and recovered is avoided.
- the C5-C6 fatty acid salt formed by dehydrating a C5 ⁇ C6 fatty acid together with sodium hydroxide is a condensation reaction aid, and a sodium hydrosulfide solution and p-dichlorobenzene are used as a raw material, N- Methyl-2-pyrrolidone is used as a solvent to synthesize a fiber-grade PPS resin with a melt flow rate of less than 125 g/10 min.
- the GPC has a weight average molecular weight of more than 4.2 x 10 4 and a whiteness of more than 90.
- Grade polyphenylene ether resin requirements are examples of the C5-C6 fatty acid salt formed by dehydrating a C5 ⁇ C6 fatty acid together with sodium hydroxide.
- the recycling process of the invention is simple and easy to control, and the recovery rate of the auxiliary agent and the solvent is high, which is beneficial to reducing the production cost and reducing the "three wastes" treatment amount.
- Example 1 In a 100 L reactor, N-methyl-2-pyrrolidone (hereinafter abbreviated as NMP) 29.74 g (300.0 mol), 40% sodium hydroxide 13.0 Kg (130.0 mol) and hexanoic acid 3.485 Kg (30.0 mo) were added. Stirring speed of 300 rpm and nitrogen protection, to 2.0. The speed of C/min is raised to 120 °C and kept for 1 hour. After the heat preservation, the temperature is raised to 200 °C at 2.0 °C /min, 8.74Kg aqueous solution is removed (water content is 97.88%), and then cooled to 130°. C.
- NMP N-methyl-2-pyrrolidone
- PDCB p-dichlorobenzene
- the material in the kettle was centrifuged, dried, and the filter cake was rinsed with 23.6 Kg of 150 'CNMP, dried, and then rinsed with 23.6 Kg of 5.6% hydrochloric acid solution (containing 36.0 mol of hydrochloric acid), dried, and the filtrate was combined. It is 92.7Kg.
- the above-mentioned pickled filter cake was washed with 50 Kg of deionized water at 100 ° C each time for a total of 8 washes, and the chloride ion content in the test water was qualified.
- the washed filter cake was dried to obtain 10.2 Kg of white polyphenylene sulfide resin.
- the product test melt flow rate (hereinafter referred to as MFR) was 110 g/10 min, and the weight average molecular weight measured by GPC was 4.65 ⁇ 10 4 , whiteness ( The L value in the LAB test results is 92.3.
- NMP N-methyl-2-pyrrolidone
- PDCB p-dichlorobenzene
- the material in the kettle was centrifuged, dried, and the filter cake was rinsed with 24.1 Kg of 130 ° CNMP, dried, and then rinsed with 24.1 Kg of 5.4% hydrochloric acid solution (containing 36.0 mol of hydrochloric acid), dried, and the filtrate was combined. It is 93.3Kg.
- the above-mentioned pickled filter cake was washed with 50 Kg of 70 ° C deionized water each time for 9 times, and the chloride ion content in the water was tested.
- the washed filter cake was dried to obtain 10.2 Kg of white polyphenylene sulfide resin.
- the product test melt flow rate (hereinafter referred to as MFR) was 103 g/10 min, and the weight average molecular weight measured by GPC was 4.76 x 10 4 , whiteness ( The L value in the LAB test results is 91.1.
- the combined filtrate is added to a rectification unit equipped with a water separator and having a volume of 150 L, and azeotropic distillation is carried out at a temperature of 99.0 to 99.7 ° C to separate 2-ethyl butyric acid 3.41 Kg, and then The fine water is removed by 21.3 Kg, and finally the NMP solvent is recovered by vacuum distillation to remove 65.8 Kg.
- the distillation residue can be incinerated.
- N-methyl-2-pyrrolidone hereinafter abbreviated as MP 27.76 g (280.0 mol), 40% sodium hydroxide ll.OKg (UO.Omol) and valeric acid 1.021 K g (lO. Omol), at a stirring speed of 200 rpm and nitrogen gas, the temperature was raised to 100 at a rate of 1.5 'C/min. C, keep warm for 2 hours; keep warm, to 1.5. The speed of C / min was raised to 190 ° C, 7.03 Kg of ice solution (water content 97.52%) was removed, and the temperature was lowered to 110 ° C.
- PDCB p-dichlorobenzene
- the material in the kettle was centrifuged, dried, and the filter cake was rinsed with 23.9 Kg of 130 ° CNMP, dried, and then rinsed with 23.9 Kg of 2.0% hydrochloric acid solution (containing 13.0 mol of hydrochloric acid), dried, and the filtrate was combined. It is 92.9Kg.
- the above-mentioned pickled filter cake was washed with 50 Kg of deionized water at 80 ° C each time for 9 times, and the chloride ion content in the water was tested.
- the washed filter cake was dried to obtain 10.3 Kg of white polyphenylene sulfide resin.
- the product test melt flow rate (hereinafter referred to as MFR) was 123 g/10 min, and the weight average molecular weight determined by GPC was 4.21 10 4 , whiteness (LAB).
- the L value in the test results) was 93.2.
- the combined filtrate is added to a rectification unit equipped with a water separator and having a volume of 150 L.
- the azeotropic separation of 0.98 Kg of valeric acid is carried out at a temperature of 99.0 to 99.6 ° C at the top of the column, and then finely removed.
- Water 21.1 Kg, last minus The NMP solvent was recovered by pressure distillation to 66.7 Kg, and the distillation residue was treated by incineration.
- Example 4 Example 4:
- NMP N-methyl-2-pyrrolidone
- 31.92 Kg (320.0 mol) 50% sodium hydroxide 12.0 Kg (150.0 mol) and isovaleric acid 5.105 Kg (50.0 mol) were added.
- NMP N-methyl-2-pyrrolidone
- the temperature was raised to 100 ° C at a rate of 1.5 ° C / min, and kept for 2 hours.
- the temperature was raised to 190 ° C at a rate of 1.5 ° C / min to remove 7.20 Kg of ice.
- the solution (water content 97.82%) was then cooled to 110 °C.
- PDCB p-dichlorobenzene
- the material in the kettle was centrifuged, dried, and the filter cake was rinsed with 23.1 Kg of 130 ° CNMP, dried, and then rinsed with 23.1 Kg of 9.5% hydrochloric acid solution (containing 60.0 mol of hydrochloric acid), dried, and the filtrate was combined. It is 100.2Kg.
- the above-mentioned pickled filter cake was used at 50 Kg 80 each time.
- C deionized water washing a total of 10 washings, the detection of chloride ion content in water has passed.
- the washed filter cake was dried to obtain 10.1 Kg of white polyphenylene sulfide resin.
- the product test melt flow rate (hereinafter referred to as MFR) was 98 g/10 min, and the weight average molecular weight measured by GPC was 4.85 ⁇ 10 4 , whiteness ( The L value in the LAB test results is 90.1.
- the above combined filtrate is added to a rectification unit equipped with a water separator and having a volume of 150 L, and azeotropic distillation is used to separate isobaric acid 4.95 Kg at an overhead temperature of 99.0 to 99.5 ° C, and then the fines are removed. After removing 19.2 Kg of water, the NMP solvent was recovered by steam distillation at a final rate of 71.7 Kg, and the distillation residue was treated by incineration.
- Example 2 The rest of the procedure was the same as in Example 1 except that 3.85 Kg of hexanoic acid was used instead of the caproic acid of Example 1. Finally, 10.2Kg of white polyphenylene sulfide resin was obtained.
- the product test melt flow rate (hereinafter referred to as MFR) was 108g/10min, the weight average molecular weight measured by GPC was 4.69 x 10 4 , and the whiteness (L value in LAB test result) was 92.2. .
- Example 6 The operation was the same as in Example 2 except that 2.85 Kg of 2-ethylbutyric acid was used instead of 2-ethylbutyric acid of Example 2.
- Example 8 The rest of the procedure was the same as in Example 3 except that 1.021 Kg of valeric acid was used instead of the valeric acid of Example 3. Finally, 10.3Kg of white polyphenylsulfate resin was obtained.
- the product test melt flow rate (hereinafter referred to as MFR) was 121 g/10 min, the weight average molecular weight measured by GPC was 4.27 x 10 4 , and the whiteness (L value in LAB test results) was 92.7.
- MFR product test melt flow rate
- Example 9 The rest of the procedure was the same as in Example 4, except that 5.105 Kg was used to recover isovaleric acid instead of the isovaleric acid of Example 4. Finally, white polyphenylene sulfate resin lO.lKg was obtained.
- the product test melt flow rate (hereinafter referred to as MFR) was 96 g/10 min, and the weight average molecular weight measured by GPC was 4.96 ⁇ 10 4 , whiteness (L value in LAB test results) Is 90.3.
- MFR product test melt flow rate
- NMP N-methyl-2-pyrrolidone 29.74 g (300.0 mol), 40% sodium hydroxide 13.0 Kg (BO.Omol) and hexanoic acid 2.323 Kg (20.0 mol), 2- Ethyl butyric acid 1.162 Kg
- PDCB p-dichlorobenzene
- the cake was rinsed with 23.5 Kg of 150 ° CNMP, dried, and rinsed with 23.65 Kg of a 5.6% hydrochloric acid solution (containing 36.0 mol of hydrochloric acid), and the filtrate was combined to give a weight of 92.5 Kg.
- the above-mentioned pickled filter cake was washed with 50 Kg of deionized water at 100 ° C each time for a total of 8 washes, and the chloride ion content in the test water was qualified.
- the washed filter cake was dried to obtain 10.2 Kg of white polyphenylene sulfide resin.
- the product test melt flow rate (hereinafter referred to as MFR) was 109 g/10 min, and the weight average molecular weight measured by GPC was 4.69 ⁇ 10 4 , whiteness ( The L value in the LAB test results is 92.2.
- the combined filtrate was added to a rectification unit equipped with a water separator and having a volume of 150 L, and aerotropic distillation of 2.13 Kg and 2-ethylbutyric acid was carried out by azeotropic distillation at an overhead temperature of 99.0 to 99.8 'C. 1.12 Kg, then re-distilling to remove water 20.3 Kg, and finally distilling off the NMP solvent 64.6 Kg under reduced pressure, and the distillation residue can be incinerated.
- NMP N-methyl-2-pyrrolidone
- 10.0mol 50% sodium hydroxide 12.0Kg (150.0mol) and isovaleric acid 2.553Kg (25.0mol)
- pentane The acid 2.553 Kg (25.0 mol) was 1.5 at a stirring speed of 200 rpm and nitrogen.
- the speed of C/min is raised to 100 °C and kept for 2 hours;
- the speed of C/min was raised to 190 'C, 7.23 Kg of aqueous solution (water content 97.28%) was removed, and the temperature was lowered to 110 °C.
- PDCB p-dichlorobenzene
- the material in the kettle was centrifuged, dried, and the filter cake was rinsed with 23.2 Kg of 130 ° CNMP, dried, and then rinsed with 23.2 Kg of 9.45% hydrochloric acid solution (containing 60.0 mol of hydrochloric acid), dried, and the filtrate was combined. It is 101.1Kg.
- the above-mentioned pickled filter cake was washed with 50 Kg of 80 'C deionized water each time for a total of 10 washes, and the chloride ion content in the test water was qualified.
- the washed filter cake is dried to obtain a white polyphenylene sulfide resin 10.1 Kg, and the product test melt flow rate (hereinafter referred to as MFR) is 97 g/10 min, and the weight average molecular weight measured by GPC is 4.88 ⁇ 10 4 , whiteness. (L value in LAB test results) is 90.3.
- the above combined filtrate was added to a rectification unit equipped with a water separator and having a volume of 150 L, and azeotropic distillation was carried out at a temperature of 99.0 to 99.5 ° C to separate isovaleric acid 2.46 Kg (25.0 mol).
- the acid was 2.48 Kg, and then 19.4 Kg of water was removed by rectification.
- 71.5 kg of NMP solvent was recovered by distillation under reduced pressure, and the distillation residue was treated by incineration.
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US14/655,326 US9567440B2 (en) | 2012-12-26 | 2013-10-29 | Fiber grade polyphenylene sulfide resin synthesis method |
| EP13867285.2A EP2940061B1 (en) | 2012-12-26 | 2013-10-29 | Method for synthesizing fibre-grade polyphenylene sulphide resin |
| KR1020157016274A KR101711182B1 (ko) | 2012-12-26 | 2013-10-29 | 피버 그레이드 폴리페닐렌 설파이드 수지의 합성 방법 |
| JP2015549961A JP5993096B2 (ja) | 2012-12-26 | 2013-10-29 | 繊維グレードポリフェニレンサルファイド樹脂の合成方法 |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210576780.5A CN103897187B (zh) | 2012-12-26 | 2012-12-26 | 一种纤维级聚苯硫醚树脂的合成方法 |
| CNCN201210576780.5 | 2012-12-26 |
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| WO2014101564A1 true WO2014101564A1 (zh) | 2014-07-03 |
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| PCT/CN2013/086096 Ceased WO2014101564A1 (zh) | 2012-12-26 | 2013-10-29 | 一种纤维级聚苯硫醚树脂的合成方法 |
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| US (1) | US9567440B2 (zh) |
| EP (1) | EP2940061B1 (zh) |
| JP (1) | JP5993096B2 (zh) |
| KR (1) | KR101711182B1 (zh) |
| CN (1) | CN103897187B (zh) |
| WO (1) | WO2014101564A1 (zh) |
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| CN105085918B (zh) * | 2015-08-31 | 2017-12-01 | 天津天大天海化工新技术有限公司 | 一种加入芳香族化合物为溶剂合成聚苯硫醚的方法 |
| CN106084224B (zh) * | 2016-07-05 | 2018-08-14 | 四川大学 | 一种粒度分布窄的高白度聚芳硫醚及其制备方法 |
| CN106317408B (zh) * | 2016-08-24 | 2018-04-24 | 重庆卓之惠化工技术有限公司 | 一种f220树脂的制备方法 |
| CN106633062B (zh) * | 2016-12-30 | 2018-12-28 | 浙江新和成特种材料有限公司 | 一种低氯含量的聚苯硫醚及其制备方法、树脂组合物和成形体 |
| WO2019059593A1 (ko) * | 2017-09-20 | 2019-03-28 | 주식회사 엘지화학 | 폴리아릴렌 설파이드의 제조방법 |
| KR102088007B1 (ko) | 2017-09-20 | 2020-03-11 | 주식회사 엘지화학 | 폴리아릴렌 설파이드의 제조방법 |
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Also Published As
| Publication number | Publication date |
|---|---|
| US9567440B2 (en) | 2017-02-14 |
| EP2940061A4 (en) | 2016-07-27 |
| KR101711182B1 (ko) | 2017-02-28 |
| JP5993096B2 (ja) | 2016-09-14 |
| CN103897187B (zh) | 2015-06-17 |
| CN103897187A (zh) | 2014-07-02 |
| US20150344632A1 (en) | 2015-12-03 |
| KR20150104096A (ko) | 2015-09-14 |
| EP2940061B1 (en) | 2021-03-10 |
| EP2940061A1 (en) | 2015-11-04 |
| JP2016501975A (ja) | 2016-01-21 |
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