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A kind of isooctylhydrazide sodium sulfonate initiator and preparation method thereof

A technology of sodium isooctanohydrazide sulfonate and initiator, applied in the preparation of hydrazide, sulfonic acid, organic chemistry, etc., can solve problems such as limiting chemical design, and achieve low energy consumption, high conversion rate, and high monomer concentration Effect

Active Publication Date: 2021-10-08
NINGBO UNIV
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  • Description
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Problems solved by technology

The difference is that the active species of free radical living polymerization is generally only produced in a specific place, which limits the chemical design

Method used

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  • A kind of isooctylhydrazide sodium sulfonate initiator and preparation method thereof
  • A kind of isooctylhydrazide sodium sulfonate initiator and preparation method thereof
  • A kind of isooctylhydrazide sodium sulfonate initiator and preparation method thereof

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Embodiment Construction

[0017] Below in conjunction with embodiment the present invention is described in further detail.

[0018] Preparation of isooctylhydrazide sodium sulfonate initiator:

[0019] 1. Add isooctyl hydrazide and ethylene glycol bisglycidyl ether into absolute ethanol at a molar ratio of 2:1, and control the mass ratio of isooctyl hydrazide to absolute ethanol in the range of 1:3.5 to 1:4 ; Keep the temperature of the reaction solution in the range of 45-50°C under stirring, and the reaction time is 2-3 hours;

[0020] 2. Add propane sultone in equimolar amount to the used isooctylhydrazide to the above reaction liquid, react at 25-30°C for half an hour, then add solid NaOH in equimolar amount to propane sultone, Continue to stir and react at 45-50°C for 2-3 hours, and cool the reaction solution to room temperature after all NaOH is dissolved;

[0021] 3. Concentrate the above reaction solution with a rotary evaporator to remove ethanol, and finally obtain a white solid, which is ...

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Abstract

The invention relates to a sodium isooctylhydrazide sulfonate initiator and its preparation and use method. Synthesize a compound containing bis-sulfonate anion and isooctylhydrazide group, which has the characteristics of surfactant. At the same time, hydrazide can undergo redox reaction with potassium persulfate at room temperature, and can repeatedly generate free radicals, which can be flexibly controlled Multi-phase serial polymerization, styrene and methyl methacrylate and styrene and hydroxyethyl acrylate are sequentially initiated on the water / oil interface to obtain multi-block copolymers. The composition ratio is very consistent, indicating that the initiator has a high initiation efficiency. The polymerization reaction conditions of this mode are mild and controllable, the energy consumption is low, and other organic solvents and emulsifiers are not used. The product is pure and fully meets the requirements of green chemistry.

Description

technical field [0001] The invention relates to the technical field of polymer material synthesis, in particular to a sodium isooctylhydrazide sulfonate initiator and a preparation and use 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. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/00C08F4/40C08F293/00C07C303/02C07C309/14
CPCC07C241/04C07C303/02C08F4/00C08F4/40C08F293/00C07C243/28C07C309/14
Inventor 吴嘉沁张瑞丰李艳肖通虎龙能兵
Owner NINGBO UNIV
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