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Preparation method for modified polyarylether

A polyarylene ether and modification technology, applied in the field of preparation of modified polyarylene ether, can solve the problems of poor control of polysulfone segment length and product molecular weight, harsh reaction conditions, and high equipment requirements, and achieve good chemical stability. The effect of high stability, mild reaction conditions and low preparation cost

Active Publication Date: 2012-08-15
河南迈纳净化技术有限公司
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  • Abstract
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  • Claims
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Problems solved by technology

Chinese patent CN1989174 discloses a polysulfone polyether block copolymer and its synthesis method. The method is to copolymerize aliphatic polyether and polysulfone monomers at a high temperature of 230°C. The reaction conditions are harsh, and the The pretreatment of raw materials and feed ratio requirements are very strict, and the length of polysulfone segment and the molecular weight of the product are not easy to control; Chinese patent CN101864070A discloses a soluble polyarylether with a high glass transition temperature and its synthesis method. The copolymerization of bulky diphenol monomers has prepared soluble polyarylethers with a high glass transition temperature, but the temperature of the polymerization reaction is high, the energy consumption is large, and the requirements for equipment are also high; Modified polyarylethers that can be used as proton exchange membrane materials for fuel cells have been prepared, but due to the strong corrosiveness of chlorosulfonic acid, the requirements for equipment are high and the pollution to the environment is serious.

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  • Preparation method for modified polyarylether
  • Preparation method for modified polyarylether
  • Preparation method for modified polyarylether

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0061] Embodiment 1: Preparation of monohydroxy polyethylene glycol modified polysulfone

[0062] Add 44.25g of polysulfone and 20.00g (containing 4.00mmol of hydroxyl) of monohydroxypolyethylene glycol (molecular weight: 5000 g / mol) into 440.00g of tetrahydrofuran, and mechanically stir for 5 hours at 50°C to dissolve completely , cooled to room temperature. 0.11 g of sodium (4.78 mmol) was added as a proton-removing agent, and the reaction was stirred at 20° C. for 12 hours, and dilute hydrochloric acid was added dropwise to the reaction system to terminate the reaction. The reaction solution is poured into deionized water to precipitate the product, the product is filtered, pulverized, washed with deionized water for several times, and then dried to obtain monohydroxy polyethylene glycol modified polysulfone. 62.52 g of product were weighed for a 97.3% yield of the reaction.

[0063] The proton nuclear magnetic resonance spectrum figure of the monohydroxypolyethylene glyc...

Embodiment 2

[0070] Embodiment 2: Preparation of polyethylene glycol modified polyethersulfone

[0071] Add 40.00g of polyethersulfone and 18.00g (containing 3.60mmol of hydroxyl) of polyethylene glycol (molecular weight: 10,000 g / mol) to 440.00g of sulfolane, and stir mechanically at 40°C for 6 hours to dissolve completely. Let cool to room temperature. 0.18 g (4.50 mmol) of potassium hydride was added as a proton-removing agent, the reaction was stirred at 10° C. for 1 hour, and glacial acetic acid was added dropwise to the reaction system to terminate the reaction. The reaction solution is poured into methanol to precipitate the product, the product is filtered, pulverized, washed with deionized water for several times, and then dried to obtain polyethylene glycol-modified polyethersulfone. Weighed 57.13 g of product, the yield of the reaction was 98.5%.

[0072] The hydrogen nuclear magnetic resonance spectrum of the polyethylene glycol modified polyethersulfone obtained in this emb...

Embodiment 3

[0077] Example 3: Preparation of Polypropylene Glycol Modified Polyarylether Sulfone

[0078] Add 40.00g polyarylethersulfone and 160.00g (containing 80.00mmol hydroxyl) polypropylene glycol (molecular weight: 4000 g / mol) to 1500.00g N,N-dimethylformamide, mechanically stir at 80°C 5 hours to make it dissolve completely, and cool to room temperature. 1.10 g (8.00 mmol) of potassium carbonate was added as a proton-removing agent, the reaction was stirred at 220° C. for 18 hours, and the reaction was terminated by cooling to room temperature. The reaction solution is poured into ether to precipitate the product, and the product is filtered, pulverized, washed with deionized water for several times, and then dried to obtain the polypropylene glycol modified polyarylethersulfone. 180.80 g of product was weighed for a 90.4% yield of the reaction.

[0079] The polypropylene glycol content in the modified polyarylethersulfone can be calculated to be 78.8wt% by proton nuclear magne...

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Abstract

The invention discloses a preparation method for modified polyarylether, which includes: dissolving polyarylether and hydroxyl polymer into solvent, adding deprotonation agent, carrying out a stirring action for 1-48 hours at the temperature of 10-220 DEG C, terminating the reaction, pouring reaction liquid into precipitator or directly evaporating to lead a product to be separated out, and filtering, crushing, washing and drying the product, so that the modified polyarylether is obtained. The preparation method leads the polyarylether and the hydroxyl polymer to realize trans-etherification under the action of the deprotonation agent, so that the modified polyarylether with ether bond chaining between the hydroxyl polymer and the polyarylether is obtained. The preparation method is simple in operation, low in reaction temperature, high in efficiency, easy in product separation, easily controllable in molecular weight and hydroxyl polymer chain content, the solvent can be recycled after separation, and a preparation process is low in cost and environmental pollution, less in side reaction, high in yield and easy in large-scale production application. The prepared modified polyarylether has the advantages of high chemical stability, high heat stability, high pH (potential of hydrogen) stability, high disinfectant resistance and the like, and serves as important raw materials for high-performance engineering plastics and functional polymer materials.

Description

technical field [0001] The invention relates to the field of polymer materials, in particular to a preparation method of modified polyarylether. Background technique [0002] Polyarylether is a kind of high-performance engineering plastics with phenyl ether structure in the main chain. It has good mechanical properties, good insulation, heat resistance, chemical corrosion resistance, disinfection resistance and other properties. , coatings, water treatment, batteries, medical materials and many other fields have a wide range of applications. However, due to the rigidity of the main chain structure of polyarylether, it is difficult to process and has poor compatibility with other polymers, especially its strong hydrophobicity, which makes its anti-pollution and biocompatibility relatively poor. Poor, which limits the effect and scope of its application. [0003] Since the phenylene ether bond in the main chain of polyarylether is relatively stable, there is no report on dir...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G81/00
Inventor 王灵辉朱宝库王建华方立峰梁治樱朱利平
Owner 河南迈纳净化技术有限公司
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