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Polyarylene sulfide sulfone containing phthalazinone structure and preparation method thereof

A technology of polyarylene sulfide sulfone and phthalazinone, which is applied in the field of preparation of polyarylene sulfide sulfone, can solve problems such as single structure and few types of polymers, and achieve improved heat resistance, high thermal decomposition temperature, good The effect of thermal stability

Pending Publication Date: 2020-08-18
SHANGHAI INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, the types of polymers covered by this prior art are relatively small, and the structure is relatively simple.

Method used

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  • Polyarylene sulfide sulfone containing phthalazinone structure and preparation method thereof
  • Polyarylene sulfide sulfone containing phthalazinone structure and preparation method thereof
  • Polyarylene sulfide sulfone containing phthalazinone structure and preparation method thereof

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preparation example Construction

[0026] A preparation method of polyarylene sulfide sulfone containing a phthalazinone structure, comprising: mixing dihalogen diphenyl sulfone with equimolar bisphenol-like monomers containing a phthalazinone structure and a reaction medium, and reacting The mixing ratio of medium and reaction raw materials (dihalogen diphenyl sulfone and equimolar bisphenol-like monomers containing phthalazinone structure) is 3mL / g~6mL / g, and the reaction medium is dimethyl sulfoxide, Diphenylsulfone, sulfolane, N-methylpyrrolidone, N,N-dimethylformamide or N,N-dimethylacetamide aprotic polar solvent or polar solvent, with sodium hydroxide or potassium hydroxide Or sodium bicarbonate or potassium carbonate is used as a catalyst, and the reaction medium mixed with the reaction raw materials is added together with the catalyst and the azeotropic dehydrating agent in a three-necked flask, and the molar ratio of the catalyst to one of the two reaction raw materials is 1:1~1.2: 1. The volume ratio...

Embodiment 1

[0037] Add 3.0mmol difluorodiphenylsulfone, 3.0mmol 4-(4`-mercapto)phenyl-2,3-naphthyridine, 3.3mmol potassium carbonate, 8mL N,N-dimethylacetamide and 8mL toluene Add it into a three-necked flask, connect the three-necked flask to a condensing water separator, feed nitrogen, and install a mechanical stirrer. Under nitrogen atmosphere, raise the temperature to 150°C, after azeotropic dehydration for 4 hours, remove water and toluene, raise the temperature to 160-165°C, polymerize for 48 hours, after the reaction, cool to 120°C, add 2mL N into the three-necked flask, N-dimethylacetamide, dilute the reaction solution, then pour it into 300mL deionized water, wash and desalt, and bake at 100-120°C for 12 hours to obtain 1.306g of polyarylene sulfide sulfone containing phthalazinone structure, The yield was 93%.

[0038] figure 1 The infrared spectrogram shows that the polyarylene sulfide sulfone obtained by the method of this embodiment has a polymer characteristic functional g...

Embodiment 2

[0040] 3.0mmol dichlorodiphenylsulfone, 3.0mmol 4-(4`-mercapto)phenyl-2,3-naphthyridine, 3.3mmol potassium carbonate, 8mL N,N-dimethylacetamide and 8mL toluene Add it into a three-necked flask, connect the three-necked flask to a condensing water separator, feed nitrogen, and install a mechanical stirrer. Under nitrogen atmosphere, raise the temperature to 150°C, after azeotropic dehydration for 4 hours, remove water and toluene, raise the temperature to 160-165°C, polymerize for 48 hours, after the reaction, cool to 120°C, add 2mL N into the three-necked flask, N-dimethylacetamide, dilute the reaction solution, then pour it into 300mL deionized water, wash and desalt, and bake at 100-120°C for 12 hours to obtain 1.302g polyarylene sulfide sulfone containing phthalazinone structure, The yield was 92%.

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Abstract

The invention discloses polyarylene sulfide sulfone containing a phthalazinone structure and a preparation method thereof. The preparation method comprises the following steps: taking dihalogen diphenyl sulfone and an equimolar bisphenol-like monomer containing a phthalazinone structure as raw materials; then in a polar solvent or an aprotic polar solvent, with alkali metal as a catalyst, carryingout heating dehydration in a nitrogen atmosphere to remove moisture and an azeotropic dehydrating agent; performing polymerization, cooling the reaction product, diluting the reaction product, precipitating the reaction product in a precipitator, and filtering and drying the mixture to obtain the polyarylene sulfide sulfone. The polymer is designable in structure and has excellent flexibility andductility. Meanwhile, the polymer has good solubility, excellent thermal stability and good processability, so that the series of polymers are expected to be applied to the field of polymer flame retardance.

Description

technical field [0001] The invention belongs to the field of polymer flame retardancy, and in particular relates to a preparation method of polyarylene sulfide sulfone containing a phthalazinone structure. Background technique [0002] Polyarylethersulfone is a class of high-performance aromatic polymers. At present, the design, synthesis and modification of this kind of compounds have shown good application prospects in the fields of separation membrane materials and fuel cells. Among them, the polyaryl ether sulfone containing phthalazinone has received special attention, because when the polymer molecule contains phthalazinone, its rigid structure increases the interaction between macromolecules, making it have excellent heat resistance. sex and mechanical properties. [0003] However, the polymers covered by this prior art are relatively few, and the structure is relatively simple. Aiming at the synthesis of some novel polymers, the present invention provides a new syn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23
CPCC08G75/23
Inventor 刘惠平王雪晨廖慧英
Owner SHANGHAI INST OF TECH
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