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High-brightness polyarylene sulfide with narrow particle size distribution and preparation method of polyarylene sulfide

A polyarylene sulfide and particle size distribution technology, which is applied in the field of polyarylene sulfide resin and its preparation, can solve the problems of unsuitability for industrial production, complex process, large water consumption, etc., and achieves simplified production process and easy purification. , the effect of low product cost

Active Publication Date: 2016-11-09
SICHUAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the use of strong polar organic solvents and deionizing agents in this application, the whole process is complicated, the water consumption is large, and the cost is high, so it is not suitable for industrial production

Method used

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  • High-brightness polyarylene sulfide with narrow particle size distribution and preparation method of polyarylene sulfide
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  • High-brightness polyarylene sulfide with narrow particle size distribution and preparation method of polyarylene sulfide

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preparation example Construction

[0039] A preparation method of high whiteness polyarylene sulfide with controllable particle size comprises the following steps:

[0040] Add 0.1-100 parts of additives, 0.1-50 parts of alkali or strong base and weak acid salt, 100-1000 parts of solvent and 55.7-55.9 parts of NaHS into the reaction kettle, and dehydrate at a temperature of 150-200°C for 0.5 -2h, get the NaHS solution after dehydration, when the temperature of the above NaHS solution drops to 130-190°C, add 114-503 parts of dihalogenated aromatic compounds, react at a temperature of 150-230°C for 0.5-3h, at a temperature of 190- Keep at 260°C for 0.5-6h, cool down to 70-180°C, the reacted material is homogenized and crushed by the crushing pump, and then the reaction system is filtered, and water is added to the filtered solid material, washed and dried to obtain polymerization The product (polyarylene sulfide resin), the filtered liquid material is flashed and recovered (the flashed liquid is directly used in ...

Embodiment 1

[0043] Add 0.06kg of lithium acetate, 0.04kg of calcium chloride, 20kg of sodium hydroxide, 1000kg of N-methylcaprolactam and 55.7kg of NaHS into the reactor, and under the protection of nitrogen, dehydrate at a temperature of 150°C for 2 hours to obtain a dehydrated NaHS solution , when the temperature of the above-mentioned NaHS solution drops to 130°C, add 114kg of p-difluorobenzene, react at a temperature of 180°C for 0.5h, keep at a temperature of 250°C for 0.5h, and cool down to 70°C to obtain a reaction product mixture; In the vertical crushing pump, add water accounting for 0.5% of the mixture, and use high-speed shear stirring at 100°C to cause a high-shear liquid flow with a linear velocity of 60m / s to carry out crushing treatment for 5 minutes, and then filter the reaction system , add water in the solid material after filtering, after washing, obtain purified polymer product polyphenylene sulfide resin after drying, its productive rate is 91.3%, and whiteness is 79....

Embodiment 2

[0046] Add 30kg of magnesium acetate, 70kg of sodium phosphate, 50kg of potassium carbonate, 1000kg of 1,3-dimethyl-2-imidazolidinone and 55.8kg of NaHS into the reactor, and dehydrate at 220°C for 0.5h under the protection of nitrogen to obtain After dehydration of the NaHS solution, when the temperature of the above NaHS solution drops to 190°C, add 218kg of 4,4'-difluorobenzophenone, react at a temperature of 150°C for 0.5h, keep at a temperature of 260°C for 6h, and cool down to 180°C To obtain the reaction product mixed solution, place the mixed solution in a vertical kettle, add water accounting for 3% of the mixed solution, and pulverize at 125° C. with a high-shear liquid flow with a linear velocity of 70 m / s caused by high-speed shear stirring Treat for 4 minutes, then filter the reaction system, add water to the filtered solid material, wash and dry to obtain the purified polymer product polyphenylene sulfide ketone resin, the yield is 90.8%, the whiteness is 70.8, th...

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Abstract

The invention relates to high-brightness and low-cost polyarylene sulfide with narrow particle size distribution and a preparation method of polyarylene sulfide and belongs to the field of polymer synthesis. The high-brightness polyarylene sulfide with narrow particle size distribution is prepared from components of raw materials in parts by weight as follows: 55.75-55.9 parts of NaHS, 114-503 parts of dihalogenated aromatic compounds, 100-1,000 parts of a solvent, 0.1-100 parts of an aid and 0.1-50 parts of alkali or strong alkali and weak acid salt, wherein the aid is at least two of lithium salt, zinc salt, sodium salt, magnesium salt and calcium salt. The high-brightness polyarylene sulfide having narrow particle size distribution and suitable for industrial production is provided and is characterized in that high-brightness polyarylene sulfide is prepared from the raw materials including sodium hydrosulfide and dihalogenated aromatic compounds under coordination of the specific aid through a solution condensation polymerization reaction and has narrow particle size distribution and high brightness.

Description

technical field [0001] The invention relates to a polyarylene sulfide resin with high whiteness, low cost and narrow particle size distribution and a preparation method thereof, belonging to the field of polymer synthesis. Background technique [0002] Polyarylene sulfide resin refers to a class of sulfur-containing aryl polymers including polyphenylene sulfide, polyarylene sulfide ketone, polyarylene sulfide sulfone and other resins. It has high temperature resistance, corrosion resistance and excellent electrical properties. , mechanical properties and dimensional stability, is an important variety of high-performance polymer materials, and has a wide range of applications in various fields of the national economy. The main method in the industrial production of polyarylene sulfide: using a composite catalytic system to carry out solution polycondensation of sodium sulfide and dihalogenated aromatic compounds under high temperature and high pressure, US Patent US 33544129,...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/0259C08G75/025C08G75/0213C08G75/0277C08G75/0281C08G75/024C08G75/0236C08G75/0227
CPCC08G75/0213C08G75/0227C08G75/0236C08G75/024C08G75/025C08G75/0259C08G75/0277C08G75/0281
Inventor 杨杰张刚任浩浩严永刚
Owner SICHUAN UNIV
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