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Method for copolymerization of maleic anhydride/conjugated diene

A technology of conjugated diene and maleic anhydride, which is applied in the field of copolymerization of maleic anhydride and butadiene, and maleic anhydride and isoprene, to achieve the effects of easy process control, reduced environmental pollution, and easy production

Active Publication Date: 2010-07-21
BEIJING UNIV OF CHEM TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0012] The purpose of the present invention is to solve the disadvantages brought by the use of stabilizer in traditional dispersion polymerization system, and provide a kind of preparation method of self-stabilized maleic anhydride / conjugated diene copolymer colloid dispersion system

Method used

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  • Method for copolymerization of maleic anhydride/conjugated diene
  • Method for copolymerization of maleic anhydride/conjugated diene
  • Method for copolymerization of maleic anhydride/conjugated diene

Examples

Experimental program
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Effect test

Embodiment 1

[0054] Under the condition of nitrogen protection, after the monomer maleic anhydride and the initiator are added to the medium to fully dissolve, then the monomer conjugated diene is added to dissolve in the system, and the molar ratio of MAn and butadiene is 1:1, wherein MAn 4.903g, butadiene 2.84g; initiator is azobisisobutyronitrile AIBN, 0.03g; medium is isoamyl acetate, 102mL. Heated in a water bath and reacted at a temperature of 60°C for 6 hours to obtain a dispersion system of maleic anhydride and conjugated diene copolymer microspheres, and then centrifuged and vacuum dried to obtain a white powder of maleic anhydride and conjugated diene copolymer microsphere solid. See Table 1 for average particle size (Dn) and dispersion coefficient (U).

Embodiment 2

[0056] Implementation steps are the same as embodiment 1. The molar ratio of MAn and butadiene is 1:2, wherein MAn is 4.903g, butadiene is 5.55g; the initiator is AIBN, 0.03g; the medium is isoamyl acetate, 98mL. Heated in a water bath and reacted at a temperature of 60° C. for 6 hours, and the average particle diameter (Dn) and dispersion coefficient (U) of the obtained copolymer microspheres are shown in Table 1.

Embodiment 3

[0058] Implementation steps are the same as embodiment 1. The molar ratio of MAn and butadiene is 1:5, wherein MAn is 4.903g, butadiene is 14.73g; the initiator is AIBN, 0.04g; the medium is isoamyl acetate, 86mL. Heated in a water bath and reacted at a temperature of 60° C. for 6 hours, and the average particle diameter (Dn) and dispersion coefficient (U) of the obtained copolymer microspheres are shown in Table 1.

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Abstract

The invention discloses a method for copolymerization of maleic anhydride / conjugated diene, relating to the field of high polymer self-stable precipitation polymerization. The invention comprises the following steps: under the protection of nitrogen, adding the monomer maleic anhydride and initiators into medium to dissolve fully; after that, adding the monomer conjugated diene into the system, dissolving, and reacting for 0.5-73h at 50-90 DEG C to obtain a disperse system of copolymer microspheres of the maleic anhydride and the conjugated diene; then obtaining a white solid of the copolymer of the maleic anhydride and the conjugated diene through centrifugation and vacuum drying. The invention has the advantages of simple process, simple post-treatment to the synthesized copolymer, low cost, environmental friendliness, etc.

Description

technical field [0001] The invention relates to a method for the copolymerization reaction of maleic anhydride (MAn) and conjugated diene, in particular to a method for the copolymerization of maleic anhydride (MAn) and butadiene and maleic anhydride (MAn) and isoprene . Using this method, self-stabilizing monodisperse copolymer microspheres with reactive groups can be prepared. Background technique [0002] Maleic anhydride (MAn) and conjugated diene copolymer are important new polymer materials, which are widely used in latex coatings, modifiers for adhesives, dispersants for pigments, compatibilizers for rubber and plastics, etc. field. [0003] In addition, a hot spot in the field of functional polymer materials is the preparation and application of polymer microspheres. Nanoscale to micron-scale polymer microspheres have large specific surface area, strong adsorption, strong coagulation, and strong surface reaction ability. Specific properties, widely used in many hi...

Claims

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Application Information

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IPC IPC(8): C08F236/04C08F222/06C08F2/06C08F236/06C08F236/08
Inventor 杨万泰孙应发何剑邓建元马育红
Owner BEIJING UNIV OF CHEM TECH
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