Diazoacetate-ethoxycarbonyl carbene copolymer and preparation method thereof

A technology of diazoacetate and ethoxycarbonyl card, applied in the field of polymer chemistry, can solve problems such as destruction, waste of resources and environment, and achieve the effects of non-toxic reaction, energy saving and convenient synthesis

Inactive Publication Date: 2013-03-20
WUHAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Although these studies have obtained some encouraging progress and showed important application prospects, the carbene polymers with substituents have structu

Method used

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  • Diazoacetate-ethoxycarbonyl carbene copolymer and preparation method thereof
  • Diazoacetate-ethoxycarbonyl carbene copolymer and preparation method thereof
  • Diazoacetate-ethoxycarbonyl carbene copolymer and preparation method thereof

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Embodiment 1

[0020] Under the protection of argon, place 0.01mol ethyl diazoacetate in the reaction flask, irradiate with 200W microwave for 30 minutes, add tetrahydrofuran to dissolve after cooling, then drop a large amount of petroleum ether for re-precipitation, and centrifuge to obtain the precipitate , vacuum dried. The yield was 61.9%, and the obtained polymer had a carbon content of 60.66%, a hydrogen content of 4.72%, a nitrogen content of 7.95%, and a molecular weight of 6300 g / mol.

Embodiment 2

[0022] Under the protection of argon, place 0.01mol ethyl diazoacetate in the reaction flask, irradiate with 200W microwave for 60 minutes, add tetrahydrofuran to dissolve after cooling, then drop a large amount of petroleum ether for re-precipitation, and centrifuge to obtain the precipitate , vacuum dried. The yield was 63.8%, and the resulting polymer had a carbon content of 60.31%, a hydrogen content of 5.07%, a nitrogen content of 8.04%, and a molecular weight of 35400 g / mol.

Embodiment 3

[0024] Under the protection of argon, place 0.01mol ethyl diazoacetate in the reaction flask, irradiate with 200W microwave for 90 minutes, add tetrahydrofuran to dissolve after cooling, then drop a large amount of petroleum ether for re-precipitation, and centrifuge to obtain the precipitate , vacuum dried. The yield was 68.1%, and the resulting polymer had a carbon content of 59.08%, a hydrogen content of 5.08%, a nitrogen content of 8.18%, and a molecular weight of 22300 g / mol.

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Abstract

The invention discloses a diazoacetate-ethoxycarbonyl carbene copolymer and a synthesis method of the copolymer. The main chain of the polymer comprises carbon atoms and nitrogen atoms, wherein the carbon atoms are prepared by carbene polymerization reaction, and the nitrogen atoms are added into the main chain of the polymer by double-free-radical polymerization. The invention also provides a preparation method of the copolymer, which takes diazoacetate as raw material, and comprises the following steps: putting the diazoacetate into a microwave oven, and carrying out microwave irradiation on the diazoacetate for a period of time under the protection of argon; and finally, carrying out reprecipitation and vacuum drying to obtain the product. The method does not use catalyst and solvent, and is simple and convenient in steps as well as simple in reaction and aftertreatment; and the prepared polyester with the novel structure can be applied to the wide fields such as optical study and the like.

Description

technical field [0001] The invention relates to a copolymer of diazoacetate and ethoxycarbonylcarbene and a preparation method thereof, belonging to the field of polymer chemistry. Background technique [0002] Carbon chain polymers are usually obtained from ethylene or its derivatives through olefin polymerization. Although olefin polymerization is widely used in fields such as plastics, synthetic fibers and synthetic rubber, and has formed a huge industry, there are some limitations, such as the inability to obtain polymers with polar groups on each carbon atom in the carbon chain , The stereochemistry of polyolefins is difficult to control. The carbene polymerization breaks through these conventional limitations and provides a new way for the development of carbon chain polymers with unique structures. [0003] At present, carbene polymerization mainly relies on the help of metal catalysts, such as organic aluminum, organic palladium, organic copper and so on. Although...

Claims

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Application Information

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IPC IPC(8): C08G73/00
Inventor 刘立建肖龙强贾响响
Owner WUHAN UNIV
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