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Bi-benzene-sulfonate interface initiator and preparing method thereof

A bis-benzenesulfonate and bis-benzenesulfonate technology, applied in the field of polymer material synthesis, can solve the problems of insufficient block polymer functionality, inability to achieve cross-phase polymerization, insufficient improvement of initiators, etc., to achieve polymerization Fast, high conversion rate, mild and controllable effect

Active Publication Date: 2016-08-24
NINGBO UNIV
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  • Abstract
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  • 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 polymerization technology can make the synthesis of block copolymers simple and convenient, these living radical polymerizations can only be carried out in the organic phase generally, and cross-phase polymerization cannot be achieved. Insufficient performance, limited application value, so far cannot be widely promoted

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  • Bi-benzene-sulfonate interface initiator and preparing method thereof
  • Bi-benzene-sulfonate interface initiator and preparing method thereof
  • Bi-benzene-sulfonate interface initiator and preparing method thereof

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Embodiment Construction

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

[0020] The preparation of bis-benzenesulfonate interfacial initiator:

[0021] 1. Mix and dissolve dodecylamine and epichlorohydrin in absolute ethanol as far as possible according to the molar ratio of 2:1. The weight ratio of dodecylamine to ethanol is controlled in the range of 1:4.5 to 1:5. Control the reaction temperature in the range of 50-60°C, and the reaction time is 3-4 hours. After the reaction is completed, cool to room temperature, add solid NaOH, and stir continuously to dissolve NaOH;

[0022] 2. Add epichlorohydrin to the above reaction liquid again, and control the molar ratio of epichlorohydrin to dodecylamine at 1:1 as much as possible, and control the reaction temperature in the range of 25-30°C under stirring, and react for 10-12 Cool to room temperature after 1 hour;

[0023] 3. Add solid NaOH and sodium p-hydroxybenzenesulfonate with the same number of m...

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Abstract

The invention relates to a bi-benzene-sulfonate interface initiator and a preparing method thereof. A tertiary amine compound with bi-benzene-sulfonate anions and bi-dodecyl is synthesized, and the characteristics of a surfactant are shown; meanwhile, tertiary amine and potassium peroxodisulfate can be subjected to a redox reaction at the normal temperature, cation free radicals are formed on nitrogen atoms and then converted into carbon free radicals at adjacent positions, generating of the free radicals can be repeated, control is flexible, multi-phase concatenation polymerization is achieved, polymerization of styrene and butyl acrylate and polymerization of styrene and N,N-dimethyl acrylamide are sequentially triggered on a water / oil interface, and a multi-segmented copolymer is obtained. An experiment proves that the feeding ratio of monomer and the composition ratio of the copolymer are quite coincident, it shows that the triggering efficiency of the initiator is high, the polymerization reaction in the mode is moderate and controllable in condition and low in energy consumption, other organic solvents and emulsifiers are avoided, the product is pure, and the requirements of green chemistry are completely met.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a bisbenzenesulfonate 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 tech...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/40C08F293/00C07C309/42C07C303/32
Inventor 孙怀艳李伟逊张瑞丰尚传洋江峰肖通虎龙能兵
Owner NINGBO UNIV
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