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Carbon-sulfur bond initiator

An initiator and carbon-sulfur bond technology, applied in the field of polymer compounds and polymerization catalysts, to achieve the effects of safe use and storage, low cost, and simple preparation

Active Publication Date: 2016-02-10
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The invention provides a new type of initiator, which has not been reported yet, and the initiator can initiate the polymerization of vinyl and acrylate monomers

Method used

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  • Carbon-sulfur bond initiator

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] 3.02g (0.02mol) 2-mercaptobenzoxazole was dissolved in 40ml of dichloromethane solvent, and 2.02g (0.02mol) triethylamine and 1.406g (0.01mol) 1-chlorophenylethane were added under magnetic stirring, Reflux reaction for 4 hours, the solution was cooled to room temperature, and diluted with dichloromethane, the solution was washed with water and saturated brine, the oil phase was dried with anhydrous magnesium sulfate, and the solvent was removed by a rotary evaporator to obtain a crude product. Column separation gave 1.40 g of pure 2-[(1-phenylethyl)-sulfanyl]-benzoxazole.

Embodiment 2

[0023] Dissolve 3.34g (0.02mol) of 2-mercaptobenzothiazole in 40ml of dichloromethane solvent, add 2.02g (0.02mol) of triethylamine and 1.406g (0.01mol) of 1-chlorophenylethane under magnetic stirring, and reflux After reacting for 6 hours, the solution was cooled to room temperature and diluted with dichloromethane, the solution was washed with water and saturated brine, the oil phase was dried with anhydrous magnesium sulfate, and the solvent was removed by a rotary evaporator to obtain a crude product, which was passed through a column Isolation gave 1.78 g of pure 2-[(1-phenethyl)-thio]-benzothiazole.

Embodiment 3

[0027] Take 0.089 g of 2-[(1-phenylethyl)-sulfanyl]-benzoxazole and add it into a polymerization tube containing 3.624 g of styrene monomer and 2 ml of tetrachloroethane, and process it through a vacuum-filling cycle for 3 After that, place it in an oil bath at 120°C for 2, 3, 4, 5, and 6 hours to obtain polystyrene products. The resulting product was compared with the blank solution polymerization reaction group to obtain the following data. See Table 2.

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Abstract

The invention provides a carbon-sulfur bond initiator and belongs to the field of polymerization catalysts. Please see the structure of the initiator in the specification. R refers to a substituent group on a benzene ring and is H, -CH3, -CH2CH3, -CH2CH2CH3, -F, -Cl, -Br, -OCH3, -OCH2CH3, -OCH2CH2CH3, -NO2, -CN or -COOH, and X is O or S. The initiator is suitable for olefin polymerization of ethylenes and acrylics, is easy to prepare and storage and has good development potentials and application prospects.

Description

technical field [0001] The invention belongs to the field of polymerization catalysts, relates to a carbon-sulfur bond initiator, and belongs to the technical field of polymer compounds. Background technique [0002] With the development of the petrochemical industry and the improvement of processing technology, synthetic materials have become an indispensable and important material in various sectors of the national economy and people's daily life. Among them, polymer polymer materials are rich in raw materials, relatively easy to synthesize, convenient to process, less energy and investment, significant benefits, various varieties, wide range of uses, and many properties that other materials do not have or are more advanced than other materials. Superiority, so its position in the field of materials is becoming increasingly prominent, the fastest growing, and its proportion is increasing, especially polymer materials. [0003] In the field of polymerization, common polyme...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F4/00C08F112/08C08F120/14C08F2/06C08F2/02C07D263/58C07D277/74
Inventor 程斌郝瑞飞王瑞
Owner BEIJING UNIV OF CHEM TECH
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