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A kind of preparation method of high transmittance sulfone polymer and prepared sulfone polymer

A high light transmittance, polymer technology, applied in the field of sulfone polymers, can solve the problems of poor heat resistance, decreased light transmittance, gel-like precipitation, etc., to improve light transmittance, eliminate application restrictions, and reduce product haze effect

Active Publication Date: 2022-08-05
WANHUA CHEM GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The existence of small molecule rings will bring great defects to the product, such as easy discoloration after repeated processing, poor heat resistance, easy cross-linking, easy decomposition, and gel-like precipitation after the product dissolves, etc., which will cause Decrease in light transmittance, which is not acceptable to downstream customers who have higher requirements on raw material quality

Method used

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  • A kind of preparation method of high transmittance sulfone polymer and prepared sulfone polymer
  • A kind of preparation method of high transmittance sulfone polymer and prepared sulfone polymer
  • A kind of preparation method of high transmittance sulfone polymer and prepared sulfone polymer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Connect the water separator, straight condenser tube, thermometer, stirrer and other devices to the 1000ml four-necked flask. After the device was replaced with nitrogen, 367g of o-xylene was added, stirring was started, 65.843g of potassium carbonate and 90.653g of bisphenol A were added, and the nitrogen atmosphere was continued to be maintained; the temperature was heated to 144°C and refluxed, and the water generated during the reaction was removed from the mixture. Drain the system from the water tank. When no more water was discharged, the water was let off, the solvent was evaporated from the reaction system to dryness, and the temperature of the system was raised to 180°C.

[0030] Accurately weigh 114.8g of 4,4'-dichlorodiphenylsulfone, dissolve it in 402g of sulfolane saturated with nitrogen, and heat it up to 180°C to prepare a solution. The solution was added to the reaction system under nitrogen protection, kept at 180 ° C and reacted at -0.09MPa for 6 hou...

Embodiment 2

[0034] Connect the water separator, straight condenser tube, thermometer, stirrer and other devices to the 1000ml four-necked flask. After the device was replaced with nitrogen, 491g of n-nonane was added, stirring was started, 32.472g of sodium hydroxide and 90.288g of bisphenol A were added, and a nitrogen atmosphere was continued; the temperature was heated to 126°C and refluxed, and the water generated during the reaction was changed from Drain the system from the water separator. When no more water was discharged, the water was let off, the solvent was evaporated out of the reaction system to dryness, and the temperature of the system was raised to 185°C.

[0035] Accurately weigh 114.8g of 4,4'-dichlorodiphenylsulfone, dissolve it in 344g of sulfolane saturated with nitrogen, and heat it to 185°C to prepare a solution. The solution was added to the reaction system under nitrogen protection, kept at 185°C and reacted at -0.09MPa for 8 hours, the viscosity of the system r...

Embodiment 3

[0039] Connect the water separator, straight condenser tube, thermometer, stirrer and other devices to the 1000ml four-necked flask. After the device was replaced by helium, 523g of xylene was added, stirring was started, 43.68g of potassium hydroxide and 72.54g of 4,4'-dihydroxybiphenyl were added, and the helium atmosphere was continued; The water produced in the reaction process was discharged from the water separator. When no more water was discharged, the water was let off, the solvent was evaporated out of the reaction system to dryness, and the temperature of the system was raised to 170°C.

[0040] Accurately weigh 114.8g of 4,4'-dichlorodiphenylsulfone, dissolve it in 689g of sulfolane saturated with helium gas, and heat it to 170°C to prepare a solution. The solution was added to the reaction system under the protection of helium, kept at 170°C and reacted at -0.08MPa for 3 hours, the viscosity of the system reached 500cp, 310g of sulfolane was added to the system f...

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Abstract

The present invention provides a preparation method for the high light transparency polymer and the prepared polymer that is prepared.The chlorine pyrone residue on the branch; under the presence of alkaline metal hydroxide or carbonate, adds five fluorophyl phenol to the polymer to the polymer to generate a polymer at the sealing end of the splin phenol.The polymer obtained through this method has the advantages of low ego ring content and high light transmission.

Description

technical field [0001] The present invention relates to a sulfone polymer, in particular to a preparation method of a high light transmittance sulfone polymer and the prepared sulfone polymer. Background technique [0002] Sulfone polymers, mainly including polysulfone, polyphenylsulfone and polyethersulfone, as well as characteristic sulfone polymers, etc., which contain repeating ether bonds, aromatic rings and sulfone groups in their structure, can be used under high temperature conditions. Engineering plastics, whose glass transition temperature is above 180℃, and the long-term use temperature is above 160℃, are mainly used in water treatment, machinery, electronics, food, medical equipment and other fields. At present, the main manufacturers of sulfone polymers include Solvay, BASF, Youju New Materials, Sumitomo Chemical and other companies. [0003] Existing synthetic methods of sulfone polymers that are relatively mature in industrial applications are the synthesis o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G75/20C08G75/23
CPCC08G75/20C08G75/23
Inventor 张鑫邹敏仇伟陈海波屈亚青宋均成
Owner WANHUA CHEM GRP CO LTD
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