Bi-sulfonate interface initiator and preparing method thereof

A bissulfonate and initiator technology, applied in the field of polymer material synthesis, can solve the problems of not very strong structural variability of block polymers, limited practical application value, and inability to be popularized in large quantities, and achieves mild and stable polymerization conditions. control, fast polymerization reaction and high conversion rate

Active Publication Date: 2016-08-24
NINGBO UNIV
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Problems solved by technology

In recent years, the technology used by the initiator has also developed. People have invented the living free radical polymerization technology, which has improved the initiation method of free radical polymerization, thus making the synthesis of block copolymers easier and more convenient. However, these active free rad

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  • Bi-sulfonate interface initiator and preparing method thereof
  • Bi-sulfonate interface initiator and preparing method thereof
  • Bi-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] Preparation of bissulfonate interfacial initiator:

[0021] 1. Dissolve sodium sulfite in water to make a 15-20wt.% concentrated solution, put it in a jar, add excess epichlorohydrin at room temperature, and the molar ratio of sodium sulfite to epichlorohydrin is 1:1.1~ 1:1.2 range, react at room temperature for 12 to 15 hours, and often stir to obtain a large amount of colorless crystals of sodium 2-hydroxy-3-chloropropanesulfonate, the yield is almost 100%, after filtering, wash with a small amount of ethanol and dry spare;

[0022] 2. Mix and dissolve dodecylamine and ethylene glycol according to the weight ratio of 1:3.5~1:4, then add the above-mentioned sodium 2-hydroxy-3-chloropropanesulfonate, heat to dissolve and mix with dodecylamine at 75~80 Reaction at ℃ temperature, the molar ratio of dodecylamine and sodium 2-hydroxyl-3-chloropropanesulfonate is in the rang...

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Abstract

The invention relates to a bi-sulfonate interface initiator and a preparing method thereof. A tertiary amine compound with bi-sulfonate anions and bi-dodecyl is synthesized, and the emulsion function higher than that of a common surfactant is 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 methyl methacrylate and polymerization of styrene and hydroxyethyl acrylate 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 bissulfonate interface initiator and a chemical preparation method thereof. The novel initiator can be used for the green synthesis of polyolefin polymer materials. Background technique [0002] Polyolefin is a very important class of general-purpose polymer materials. Its structure can be adjusted by virtue of the combination of olefin monomers, so it is widely used. Such materials are usually obtained by homopolymerization and copolymerization of olefin monomers initiated by free radicals. Due to different polymerization occasions, the initiators used are divided into oil-soluble and water-soluble, which correspond to oil-soluble and water-soluble monomers respectively. aggregation. The so-called initiators generally refer to compounds that can generate free radicals, such as oil-soluble peroxides, azo initiators, and water-soluble persulfates. Although th...

Claims

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Application Information

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IPC IPC(8): C08F293/00C08F220/14C08F220/28C08F4/40C07C309/14C07C303/32
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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