Title:
POLYSULFONE RESIN POLYMER MATERIAL AND PREPARATION METHOD THEREFOR
Document Type and Number:
WIPO Patent Application WO/2021/031531
Kind Code:
A1
Abstract:
Disclosed are a polysulfone resin polymer material and a preparation method therefor. The preparation method comprises the following steps, wherein 4,4'-dichlorodiphenyl sulfone, potassium carbonate and a polymer monomer are used as raw materials, dimethylacetamide is used as an organic solvent, and toluene is used as a moisture scavenger: mixing 4,4'-dichlorodiphenyl sulfone, potassium carbonate, the polymer monomer, dimethylacetamide and toluene, and subjecting same to a polymerization reaction to obtain a polymer solution; and cooling the polymer solution to room temperature, then sedimenting same in deionized water, washing same at 80ºC 5 times, and drying same to obtain a powdery polysulfone product, wherein the cyclic dimer content of the powdery polysulfone product is less than or equal to 0.03 wt%. The present invention solves the problem of a high cyclic dimer content in the production process of a polysulfone resin in the prior art, improves the quality of polysulfone resin products, and alleviates production problems caused by a high residual amount of cyclic dimer in downstream products of the polysulfone resin.
Inventors:
ZHANG DONGBAO (CN)
ZHANG QI (CN)
YU RAN (CN)
ZHANG QI (CN)
YU RAN (CN)
Application Number:
PCT/CN2020/072559
Publication Date:
February 25, 2021
Filing Date:
January 16, 2020
Export Citation:
Assignee:
NANJING QINGYAN POLYMER NEW MAT CO LTD (CN)
International Classes:
C08G75/20; C08G75/23; C08J5/18; C08L81/06
Domestic Patent References:
| WO2000018824A1 | 2000-04-06 | |||
| WO2000000537A1 | 2000-01-06 |
Foreign References:
| CN110511380A | 2019-11-29 | |||
| CN110527094A | 2019-12-03 | |||
| CN110272545A | 2019-09-24 | |||
| CN101050305A | 2007-10-10 | |||
| US20160214068A1 | 2016-07-28 | |||
| CN109721733A | 2019-05-07 |
Other References:
SELVARAJ SAVARIAR: "Polysulfone with lower levels of cyclic dimer:Use of MALDITOF in the study of cyclic oligomers", DESALINATION, vol. 144, 10 September 2002 (2002-09-10), XP004386189, DOI: 20200518122311A
Download PDF:
Previous Patent: SYRINGE FOR AVIATION GASOLINE WATER DETECTOR
Next Patent: TOUCH ARRAY SUBSTRATE AND PREPARATION METHOD THEREOF
Next Patent: TOUCH ARRAY SUBSTRATE AND PREPARATION METHOD THEREOF