Dimaleimide resin microball, its preparation method and application thereof

A technology of bismaleimide resin and maleimide resin, applied in the preparation of bismaleimide resin microspheres, in the field of bismaleimide resin microspheres, can solve the problem of poor heat resistance, Insufficient rigidity, poor solvent resistance, etc., to achieve the effect of easy cleaning, overcoming poor heat resistance, and high mechanical strength

Inactive Publication Date: 2005-06-08
桂林电子工业学院
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the resin microsphere chromatographic fillers mentioned above all have disadvantages such as poor heat resistance, poor solvent resistance and insufficient rigidity.

Method used

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  • Dimaleimide resin microball, its preparation method and application thereof
  • Dimaleimide resin microball, its preparation method and application thereof
  • Dimaleimide resin microball, its preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] 50 grams of bismaleimide prepolymer, 50 grams of allyl bisphenol A, and 20 grams of polyetherimide were heated and stirred at 150°C for vacuum degassing and mixing; then the resulting mixture was mixed Decompress and pour into a preheated mold; then cure the mixture placed in the mold at 160°C for 3 hours, then at 185°C for 3 hours, and finally at 200°C for 3 hours; after curing Add 400-500 grams of chloroform to the obtained hardened product, dissolve and wash the polyetherimide contained in the hardened product with the assistance of ultrasonic vibration, wash repeatedly for 3 times, settle, and finally obtain a double horse of 5-7 microns 97 grams of imide resin microspheres.

Embodiment 2

[0017] 57 grams of bismaleimide prepolymer, 43 grams of allyl bisphenol A, and 30 grams of polyester imide were heated and compacted at 170°C for vacuum degassing and mixing; then the resulting mixture was mixed Decompress and pour into a preheated mold; then cure the mixture placed in the mold at 160°C for 3 hours, then at 175°C for 3 hours, and finally at 200°C for 3 hours; after curing Add 500 to 700 grams of N,N'-dimethylacetamide to the obtained hardened product, and dissolve and wash the polyesterimide contained in the hardened product with the assistance of mechanical ball milling, wash repeatedly 3 times, settle, Finally, 96 grams of bismaleimide resin microspheres of 3 to 7 microns were obtained.

Embodiment 3

[0019] Mix 57 grams of bismaleimide prepolymer, 43 grams of allyl bisphenol A, and 40 grams of polyethersulfone in a small screw extruder at 250°C; then pour the mixture into a preheated In a good mold; then cure the mixture placed in the mold at 160°C for 3 hours, then at 180°C for 3 hours, and finally at 200°C for 3 hours; add the cured product obtained after curing to 450-500 gram of N-methylpyrrolidone, and dissolve and wash the polyethersulfone contained in the hardened product with the aid of stirring, wash repeatedly 3 times, settle, and finally obtain bismaleimide resin microspheres of 2 to 6 microns 96 grams. Example 4:

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Abstract

A kind of bimaleimide resin micropheres used as the ideal liquid-phase chromatographic filler is prepared through proportionally mixing the prepolymer of bimaleimide resin, inertial thermoplastic resin, and optional allylbiphenol A, moulding, solidifying at 150-180 deg.C for 2-5 hr and then at 180-250 deg.C for 2-8 hr, and washing with organic solvent for removing inertial thermoplastic resin.

Description

(1) Technical field: [0001] The invention relates to a liquid chromatography filler, specifically bismaleimide resin microspheres, and also relates to a preparation method and application of the bismaleimide resin microspheres. (two) background technology: [0002] In recent years, high-performance hydrophobic interaction chromatography (HPHIC) technology has been developed rapidly. This technology mainly involves monodisperse, non-porous cross-linked polymer microspheres, their preparation methods and applications. It can avoid the use of a elution system containing a large amount of organic solvents, and can effectively maintain the biological activity of the sample to be separated, so it is widely used in the separation and purification of biological macromolecules, especially proteins. For example, the application number is 86101723, and the name is the Chinese invention patent of "Uniform Polymer Microspheres for Liquid Chromatography and Preparation", which discloses t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29B9/00C08J3/12C08L35/00G01N30/00
Inventor 罗炎李长远
Owner 桂林电子工业学院
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