Iso-octanoyl hydrazide sodium sulfonate initiator and preparation method thereof

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

Active Publication Date: 2019-07-05
NINGBO UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Iso-octanoyl hydrazide sodium sulfonate initiator and preparation method thereof
  • Iso-octanoyl hydrazide sodium sulfonate initiator and preparation method thereof
  • Iso-octanoyl hydrazide sodium sulfonate initiator and preparation method thereof

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Embodiment Construction

[0017] The present invention is described in further detail below in conjunction with embodiment.

[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 an iso-octanoyl hydrazide sodium sulfonate initiator and a preparation and application method thereof. A compound that contains a disulfonate negative ion and an iso-octanoylhydrazide group is synthesized; the synthesized compound has the characteristics of a surfactant; at the same time, hydrazide can carry out redox reactions with potassium persulfate at a room temperature, free radicals can be generated repeatedly for many times; multi-phase serial polymerization can be flexibly controlled; in a water / oil interface, reactions between styrene and methyl methacrylateand reactions between styrene and hydroxyethyl acrylate are triggered in sequence to obtain segmented copolymers; the test results show that the feed ratio of monomers is very identical with the composition of the copolymers, the results mean that the initiation efficiency of the initiator is very high; the polymerization reaction conditions of this mode are mild and controllable, the energy consumption is low, no other organic solvent or emulsifying agent is used, the product is pure, and the requirements of green chemistry can be totally satisfied.

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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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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