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A kind of selenium-containing maleimide polymer and its preparation method and application

A maleimide and polymer technology, applied in the field of polymer materials, can solve the problems of poor thermal stability and uncontrollable molecular weight, etc., and achieve the effect of increasing the refractive index, increasing the refractive index, and extending the application

Active Publication Date: 2021-03-12
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to solve the above-mentioned technical problems, the present invention selects maleimide as the research object, and adopts the mode of active polymerization, which can solve the problems of poor thermal stability and uncontrollable molecular weight in the front, in order to create a kind of selenium-containing maleimide The preparation method and application of the polymer make it more valuable in industry

Method used

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  • A kind of selenium-containing maleimide polymer and its preparation method and application
  • A kind of selenium-containing maleimide polymer and its preparation method and application
  • A kind of selenium-containing maleimide polymer and its preparation method and application

Examples

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Embodiment 1

[0055] Embodiment 1: 4-phenyl selenide phenylmaleimide (SePMI) monomer and styrene monomer copolymerization

[0056] Polymerization process is: SePMI (nuclear magnetic spectrum see image 3 ), styrene, azobisisobutyronitrile (AIBN), 2-cyano-2-propyl-1-dithionaphthoate (CPDN) with a molar ratio of 200:200:1:2 as raw materials Ratio; Quantitative SePMI is 2mol in the present embodiment, just can obtain the consumption of other raw materials, and adds 4ml toluene as solvent. After adding all the raw materials, add a stirring bar, freeze and deoxygenate, seal and react at 60°C for 8 hours to obtain a viscous polymer solution. Add a small amount of tetrahydrofuran, dilute, slowly drop into methanol to precipitate the polymer, and then filter, wash, and vacuum dry to obtain the final polymer, which is named P3-50%. attached Figure 5 Molecular weight information for the resulting polymers is provided in ; Image 6 Structural information of the resulting polymers is provided in ....

Embodiment 2

[0057] Example 2: Copolymerization of 4-phenylselenide phenylmaleimide (SePMI) monomer and 4-phenylselenide styrene (PhSeSt) monomer

[0058] The steps of this embodiment are basically the same as in Example 1, the difference being that the styrene monomer is replaced by a 4-phenylselenide styrene (PhSeSt) monomer (see Figure 4 ), the polymer obtained was named as P4-50%. also attached Figure 5 Molecular weight information for the resulting polymers is provided in ; Image 6 Structural information of the resulting polymers is provided in .

[0059] The following are comparative examples, the preparation of selenium-free maleimide polymers:

Embodiment 3

[0060] Embodiment 3: Copolymerization of 4-phenylsulfide phenylmaleimide (SPMI) monomer and styrene monomer

[0061] The steps of this embodiment are basically the same as in Example 1, the difference being: 4-phenyl selenide phenyl maleimide (SePMI) monomer is replaced by 4-phenyl sulfide phenyl maleimide (SPMI ) monomer (see NMR figure 2 ), the polymer obtained was named as P2-50%. also attached Figure 5 Molecular weight information for the resulting polymers is provided in ; Image 6 Structural information of the resulting polymers is provided in .

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Abstract

The invention discloses a selenium-containing maleimide polymer as well as a preparation method and application thereof and belongs to the technical field of polymer materials. The selenium-containingmaleimide polymer with various refractive indexes is obtained through carrying out active free radical polymerization on a synthesized selenium-containing maleimide monomer with a novel structure anda styrene monomer at different mol ratios; and the refractive index is the greatest when the mol ratio of the two monomers is 1 to 1 and the refractive index value is 1.69 when the wavelength is 633nm. Compared with oxygen and sulfur substituted polymers with the same structure, the refractive index is remarkably improved. Furthermore, the styrene monomer is changed into a synthesized novel selenium-containing vinyl monomer and then the synthesized novel selenium-containing vinyl monomer is copolymerized with selenium-containing maleimide, so that the refractive index value of the obtained polymer is further improved on the basis of 1.69 and reaches 1.87 when the wavelength is 633nm. By adopting the selenium-containing maleimide polymer, the defects that the thermal stability is poor andthe molecular weight cannot be controlled are overcome; and the refractive index is controllably adjusted so that the application of the selenium-containing maleimide polymer in the optical field is expanded.

Description

technical field [0001] The invention relates to a selenium-containing maleimide polymer, a preparation method and application thereof, and belongs to the technical field of polymer materials. Background technique [0002] Generally, the refractive index of traditional materials is 1.3-1.7, and materials with a refractive index of 1.7 and above are called high refractive index materials. High refractive index materials have important applications in advanced display equipment, various lenses, LED sealing materials, anti-refractive coatings and other fields, and are closely related to the development of modern society. Based on this, it is very meaningful to develop materials with high refractive index. [0003] The high-refractive-index polymer materials that have been reported so far mainly include: high-refractive-index polymers containing halogen, high-refractive-index polymers containing phosphorus, and high-refractive-index polymers containing large conjugated groups in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F230/00
CPCC08F212/08C08F230/00
Inventor 朱健李琪龙邢栋刘绍祥潘向强朱秀林
Owner SUZHOU UNIV
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