Dianion interface initiator and preparation method thereof

A dianion and initiator technology, used in chemical instruments and methods, cyanide reaction preparation, organic compound preparation, etc., can solve the problem of insufficient functionality of block polymers, inability to achieve cross-phase polymerization, and insufficient initiator improvement. and other problems, to achieve the effect of fast polymerization reaction, high conversion rate, mild and controllable conditions

Active Publication Date: 2016-08-24
NINGBO UNIV
View PDF1 Cites 11 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing polymerization technology, the initiator is only a compound that can generate free radicals. Their use is restricted by the properties of different monomers. People often spare no effort in the design of polymer structures, but the improvement of initiators is insufficient. , although living radical po

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

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Dianion interface initiator and preparation method thereof
  • Dianion interface initiator and preparation method thereof
  • Dianion interface initiator and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0019] Below in conjunction with embodiment the present invention is described in further detail.

[0020] Preparation of dianion interfacial initiator:

[0021] 1. Dissolve ethylenediamine in absolute ethanol, control the weight ratio of ethylenediamine to ethanol in the range of 1:3~1:3.5, slowly add methyl acrylate and keep stirring, the molar ratio of ethylenediamine to methyl acrylate Keep the ratio of 1:2 as much as possible, control the temperature of the system in the range of 20-25°C, and the reaction time should reach 5-6 hours;

[0022] 2. Add phenyl glycidyl ether to the above reaction mixture, the molar number of phenyl glycidyl ether should be the same as the molar number of the above methyl acrylate, gradually raise the reaction temperature to 40-50°C under stirring, and Reaction at low temperature for 4 to 5 hours;

[0023] 3. Add 30wt.% NaOH aqueous solution to the above reaction solution, the mole number of sodium hydroxide should be 1.2 to 1.5 times the mo...

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 relates to a dianion interface initiator and a preparation method thereof. A tertiary amine compound containing dicarboxylic acid radical anions and diphenyl groups is firstly synthesized to enable the tertiary amine compound to show the characteristics of a surfactant, tertiary amine can generate a redox reaction with potassium persulfate at room temperature, cation free radicals are firstly formed on nitrogen atoms and then converted into carbon free radicals at the adjacent positions, generation of the free radicals can be repeated for multiple times and flexibly controlled, multiphase concatenating polymerization is achieved, polymerization of styrene and butyl acrylate and polymerization of styrene and dimethyl acrylamide are initiated on a water-oil interface in sequence, and then a segmented copolymer is obtained. Experiments prove that the feed ratio of monomers is quite consistent with the component ratio of the copolymer, that is to say, the initiation efficiency of the initiator is very high, this mode of polymerization reaction is mild and controllable in condition and low in energy consumption, no other organic solvent or emulsifier is used, the product is pure, and the requirements of green chemistry are totally met.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a dianion interface initiator and a chemical preparation method thereof. The novel initiator can be used for the green synthesis of various polyolefin polymer materials. Background technique [0002] Polyolefin is a very important polymer material with adjustable structure, various types and wide application. These materials are generally obtained by homopolymerizing or copolymerizing olefin monomers through initiators. According to different polymerization occasions, initiators can be divided into two categories: oil-soluble and water-soluble, corresponding to the polymerization of oil-soluble and water-soluble monomers respectively. Water-soluble initiators can also initiate the polymerization of oil-soluble monomers by diffusing into emulsion microcapsules, which is surfactant-assisted emulsion polymerization. In the existing polymerization technology, the ...

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
IPC IPC(8): C07C229/22C07C227/08C08F297/02
Inventor 孙怀艳张瑞丰李伟逊尚传洋江峰肖通虎龙能兵
Owner NINGBO UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products