Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Polysulfone resin preparing method with microwaves as heat source

A polysulfone resin and heat source technology, applied in the field of polymer materials, can solve the problems of easy "paste", low heat transfer efficiency of high-viscosity medium, uneven heat transfer, etc., to achieve stable reaction, shorten reaction time, and improve production efficiency. Effect

Inactive Publication Date: 2015-10-21
SHANDONG JINLAN SPECIAL POLYMER CO LTD
View PDF4 Cites 3 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

No matter which way, you will encounter the problems of low heat transfer efficiency, uneven heat transfer, and easy "pasting" of high-viscosity media

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] 4,4'-dichlorodiphenylsulfone (DCDPS, 28.7160g, 100mmol), 4,4'-biphenyldiphenol (BP, 18.6210g, 100mmol), anhydrous potassium carbonate (K 2 CO 3 , 27.6420g, 200mmol), 237mL N,N-dimethylacetamide (DMAc) were mixed, the power of the microwave reactor was turned on to 3 kW, the reaction temperature was raised to 180°C, and the reaction was carried out for 3 hours. Turn off the microwave reactor and stirrer, and cool to room temperature naturally. The reaction solution was slowly poured into 2L of deionized water to obtain a white fibrous polymer, soaked in 4L of deionized water for 8 hours at 80°C, repeated three times, filtered, dried, and then vacuum-dried at 100°C for 24 hours to obtain a white Fibrous polymer, 39.7g, yield: 99%, intrinsic viscosity: 0.73dL / g.

Embodiment 2-8

[0021] With reference to the method of Example 1, polysulfone can be synthesized by using different microwave reactor powers, reaction times, solvents and potassium carbonate, and the specific results are shown in the following table:

[0022]

[0023] Result description:

[0024] (1) Adopting the experimental method of the present invention, there is no phenomenon of "sticky pot", and the reaction is stable.

[0025] (2) By adopting the experimental method of the present invention, the intrinsic viscosity of the polymer can reach the level achieved by the 12-hour reaction time in the comparative example in a very short period of time, which greatly shortens the reaction time.

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses an efficient polysulfone resin preparing method with microwaves as a heat source. The preparing method includes the steps that 4,4'-dichloro(di)phenyl sulfone and bisphenol A serve as initial raw materials, carbonate with the mole number two times that of the bisphenol A is added to serve as alkali, and the mixture is heated and reacted for 2 hours to 5 hours through a microwave reactor in high-boiling-point aprotic polar solvents; then the reaction liquid is slowly poured into deionized water, white fiber-shaped polymers are obtained, then the polymers are soaked for 5 hours to 10 hours under the 60-DEG-C-to-80-DEG-C condition, the process is repeated three times to five times, filtering and drying are carried out, and polysulfone resin is obtained through vacuum drying. By means of the preparing method, the reaction time is shortened to a great degree, energy consumption is reduced, the cost for the production technology is reduced accordingly, and the working efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of polymer materials and relates to a preparation method of polysulfone resin, in particular to an efficient preparation method of polysulfone resin using microwave as a heat source. At the same time, this application was supported by the major special project of Tianjin Science and Technology Commission (contract number: 12ZCDZSF07000) and the national "863" project (project number: 2012AA03A601). Background technique [0002] As a special engineering plastic, polysulfone is widely used in many fields such as aerospace, automobile, electronic appliances, precision machinery, food, industrial equipment and medical equipment. Its production process is mainly divided into two types: two-step method and one-step method. The two-step method uses sodium hydroxide as a strong base, first converts bisphenol A into sodium salt, and then polymerizes with 4,4'-dichlorodiphenyl sulfone in dimethyl sulfoxide to obtain ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): C08G75/23
Inventor 张中标蔡圣文陈磊张东汤红英
Owner SHANDONG JINLAN SPECIAL POLYMER CO LTD
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com