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Polyamide micro-particle and preparation method thereof

A technology of microparticles and polyamides, applied in polyamide coatings, coatings, adhesives, etc., to achieve the effects of low equipment requirements, strong practicability, and simple process routes

Inactive Publication Date: 2011-01-19
TORAY FIBER RES INST(CHINA) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

There is no report on the method of preparing polyamide microparticles by phase inversion

Method used

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  • Polyamide micro-particle and preparation method thereof
  • Polyamide micro-particle and preparation method thereof
  • Polyamide micro-particle and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] 4.5 g of terephthaloyl chloride was dissolved in 15 ml of xylene, and then 2.85 g of emulsifier polyoxyethylene sorbitol monooleate Tween 80 was added, and the mixture was mixed at a stirring speed of 800 rpm and 15°C for 5 min. Gradually add deionized water until reverse rotation occurs to form an O / W emulsion, and then emulsify for 5 min. After reducing the stirring speed to 300 rpm, a buffer solution containing 3.75 g of sodium carbonate and 20 ml of deionized water, and 70 ml of ethylenediamine were added. After reacting for 5 hours, it is separated and washed with deionized water to obtain polyamide particles.

Embodiment 2

[0041] 3g of terephthaloyl chloride was dissolved in 15ml of xylene, then 2.85g of emulsifier polyoxyethylene sorbitol monooleate Tween 80 was added, and the mixture was mixed for 5 min at a stirring speed of 800 rpm and 15°C. Gradually add deionized water until reverse rotation occurs to form an O / W emulsion, and then emulsify for 5 min. After reducing the stirring speed to 300 rpm, a buffer solution containing 3.75 g of sodium carbonate and 20 ml of deionized water, and 70 ml of ethylenediamine were added. After reacting for 5 hours, it is separated and washed with deionized water to obtain polyamide microparticles.

Embodiment 3

[0043] 4.5 g of terephthaloyl chloride was dissolved in 15 ml of xylene, and 3.87 g of emulsifier polyoxyethylene sorbitol monooleate Tween 80 was added, and the mixture was mixed for 5 min at a stirring speed of 800 rpm and 15°C. Gradually add deionized water until reverse rotation occurs to form an O / W emulsion, and then emulsify for 5 min. After reducing the stirring speed to 300 rpm, a buffer solution containing 3.75 g of sodium carbonate and 20 ml of deionized water, and 70 ml of ethylenediamine were added. After reacting for 5 hours, it is separated and washed with deionized water to obtain polyamide microparticles.

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Abstract

The invention discloses a polyamide microparticle and a preparation method, wherein, the range of particle size of the polyamide microparticle is between 1 Mu m and 100 Mu m, and the range of thermal decomposition is between 300 DEG C and 420 DEG C. The preparation method includes four steps; firstly, acyl chloride is resolved in organic solution, which is then added with emulsifier while being stired under the temperature between 0 DEG C and 100 DEG C; secondly, after the addition of the emulsifier, deionized water is added until phase inversion occurs, and the emulsion is converted from W / Otype to O / W type; thirdly, buffer solution and amine are added and reacted with the acyl chloride resolved in organic phase, so that polyamide is generated; fourthly, after the reaction is finished, the polyamide microparticle is obtained by separation, washing and drying. The polyamide microparticle prepared by the method is a faultless spheral particle, and the range of thermal decomposition isbetween 300 DEG C and 420 DEG C. The process route of the invention is simple, the requirement on equipment is low, and practicability is strong.

Description

Technical field [0001] The invention relates to a high molecular polymer microparticle and a preparation method thereof, in particular to a polyamide microparticle and a preparation method thereof. Background technique [0002] Polymer particles are widely used in the fields of medicine, biochemistry, coatings, adhesives, paper surface processing, and cosmetics. For example, in biomedicine, polymer microparticles are used for embedding toxic and easily inactivated drugs, embedding, separation and purification of cells, proteins and DNA, immobilization of enzymes, and renaturation of denatured proteins. The most commonly used adhesive preparation technology is core-shell particles. For example, the core is urethane resin and the shell is polyacrylate adhesive. The core material is used to increase the strength of the adhesive film, while the shell Used to show stickiness. [0003] General vinyl monomers can be prepared into microparticles by various free radical polymerization met...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G69/00A61K31/785C09D177/00C09J177/00
Inventor 张大余於慧吴刚
Owner TORAY FIBER RES INST(CHINA) CO LTD