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A kind of initiator that can be used for the polymerization reaction of vinyl monomer

A technology of olefin monomer and polymerization temperature, applied in the field of compounds, can solve problems such as explosion, and achieve the effects of simple synthesis method, safe use and storage, and simple operation

Active Publication Date: 2015-10-28
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, since most of them are azo and peroxy compounds, there is a risk of explosion
It also brings a lot of inconvenience to use, storage and transportation

Method used

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  • A kind of initiator that can be used for the polymerization reaction of vinyl monomer
  • A kind of initiator that can be used for the polymerization reaction of vinyl monomer
  • A kind of initiator that can be used for the polymerization reaction of vinyl monomer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Add 1g of methyl methacrylate monomer, 0.0222g of initiator A and 2ml of toluene solvent into the polymerization tube, mix well and then seal it well. Under liquid nitrogen freezing or low temperature conditions, vacuumize and nitrogen-fill repeatedly 5 times. The polymerization tube was placed in an oil bath at 80°C for 10 hours of reaction, and then the polymerization tube was taken out, and the reaction was terminated at low temperature. Then use petroleum ether or methanol / water=1:1 solvent to precipitate the polymer, and dry it in a vacuum oven at 50°C to a constant weight. The conversion rate is 32.01%, and the number average molecular weight (M n )=90714, molecular weight distribution width (PDI)=1.74. However, the blank group without initiator A under the same conditions did not polymerize at all.

Embodiment 2

[0024] Add 1g of methyl methacrylate monomer, 0.0222g of initiator A and 2ml of toluene solvent into the polymerization tube, mix well and then seal it well. Under liquid nitrogen freezing or low temperature conditions, vacuumize and nitrogen-fill repeatedly 5 times. The polymerization tube was placed in an oil bath at 85° C. for 10 h, and then the polymerization tube was taken out, and the reaction was terminated at low temperature. Then use petroleum ether or methanol / water=1:1 solvent to precipitate the polymer, 50 ℃ of vacuum oven dry to constant weight, its conversion rate is 52.44%, record the polymer number average molecular weight (M n )=91531, molecular weight distribution width (PDI)=1.77. And under the same conditions, although the blank group without initiator A slightly polymerized, the amount of polymerization was very small.

Embodiment 3

[0026] Add about 1.04g of styrene monomer and 0.0222g of initiator A into the polymerization tube, mix well and then seal it well. Under the condition of freezing with liquid nitrogen or low temperature, vacuumize and fill with nitrogen for 5 times. The polymerization tube was placed in an oil bath at 120°C for 3 hours to react, then the polymerization tube was taken out, and the reaction was terminated at low temperature. Then use petroleum ether or methanol / water=1:1 solvent to precipitate the polymer, and dry it in a vacuum oven at 50°C to a constant weight. The conversion rate is 52.20%, and the polymer M n =153042, PDI=1.78.

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Abstract

The invention discloses an initiator for alkene monomer polymerization reaction, and belongs to the technical field of imitators. A compound 2,3-diphenyl butyronitrile is applied to initiating polymerization of alkene monomers such as acrylic ester, metacrylic acid ester and styrene, the polymerization method mainly refers to bulk polymerization or solution polymerization, and the initiated polymerization temperature is 70-130 DEG C. The compound 2,3-diphenyl butyronitrile can be dissolved by the solvent adopted in solution polymerization. By adopting the initiator, a polymerization initiator system is expanded, and polymers with high molecular weight are easily obtained.

Description

technical field [0001] The invention relates to a new application of a compound, especially a new application of 2,3-diphenylbutyronitrile, which can be used as an initiator for initiating the polymerization of vinyl monomers, and belongs to the technical field of initiators. Background technique [0002] Polymer compounds are generally prepared by polymerization of monomers initiated by an initiator system. The initiation system plays an indispensable role in the preparation of polymer compounds. Throughout the history of the development of polymer science, the history of the initiation system is the development history of polymer science. Existing polymer polymerization initiation systems are divided into five categories, namely free radical initiator systems, cationic initiator systems, anion initiator systems, coordination polymerization initiator systems and group transfer polymerization initiation systems. [0003] The coordination polymerization initiation system is ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F4/00C07C255/33C08F120/14C08F112/08C08F2/06C08F2/02
Inventor 程斌鲍彦广
Owner BEIJING UNIV OF CHEM TECH
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