New multifunctional organic micropowder synthesis method

A synthetic method and multi-functional technology, applied in the field of preparation of functional polymer materials, can solve the problems of pulverization and organic solvent application dispersion difficulties, research literature reports have not been found, and the extinction effect has no obvious advantages, etc., to achieve excellent extinction effect , excellent adhesion, high weather resistance effect

Active Publication Date: 2010-09-01
ZHEJIANG JCOLOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Canadian Patent No.887,694 reports an organic micropowder with matting and texture effects, its particle size ranges from 1 to 700 microns, and is insoluble in organic solvents, but compared with traditional silica, the matting effect has no obvious advantages, and the particle size The diameter distribution is wide, which limits its application range
[0009] U.S. Patent U.S.3,953,421 reports a synthesis method of urea-formaldehyde resin particles and its application in paper coating; the product particles synthesized by this process are solid, and it is difficult to crush and disperse in organic solvents in the later stage, and does not have excellent matting Effect
[0010] As can be seen from the above-mentioned patent documents, a large amount of scientific research work has been carried out abroad in this respect, and some products have been popularized and applied, while domestic scientific research literature reports in this respect have not been found. Therefore, this type of multifunctional organic Micropowder products will have huge scientific research value and market potential in the future, and can generate huge economic benefits. Simple, stable and reliable preparation methods are urgently needed

Method used

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  • New multifunctional organic micropowder synthesis method
  • New multifunctional organic micropowder synthesis method
  • New multifunctional organic micropowder synthesis method

Examples

Experimental program
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Effect test

Embodiment 1

[0036] Embodiment 1: 9 parts (weight) carboxymethyl cellulose is dissolved in 600 parts of water, add mixer, start to stir, then add 180 parts of urea, 90 parts of solid formaldehyde, adjust pH value to 7.0 with sodium carbonate; Mix well Finally, transfer the material to the prepolymerization reactor, start stirring, start to heat up to 70°C, and maintain the temperature for 2 hours; the prepolymer is cooled to 40°C through the cooler, enters another mixer, and adds Sulfuric acid adjusts the PH of the prepolymer to 1.5, then the prepolymer enters the main polycondensation reactor, heats up to 75°C, maintains the temperature for 1 hour, transfers the product to a neutralization mixer, adds 1200 parts of water, 0.27 parts Span40, disperse and wash, adjust its pH value to 7.0 with sodium carbonate, filter, vacuum dry, and pulverize to obtain the product. The average particle size of the fine powder is 3.7 microns, and the specific surface area is 14m 2 / g, the porosity is 1.183...

Embodiment 2

[0037] Example 2: Dissolve 6 parts of PVP in 900 parts of ethanol, add to the mixer, start stirring, then add 100 parts of urea, 42 parts of solid formaldehyde, adjust the pH value to 7.5 with ethanolamine; after mixing evenly, transfer the material to In the prepolymerization reactor, start stirring, start to heat up to 70°C, and maintain the temperature for 1.5 hours; the prepolymer is cooled to 50°C through the cooler, and then enters another mixer, and citric acid is added to it to adjust the pH of the prepolymer 1.0, then let the prepolymer enter the main polycondensation reactor, heat up to 75 ° C, maintain the temperature for 1 hour, transfer the product to a neutralization mixer, add 1000 parts of ethanol, 0.3 parts of organosilane, disperse and wash, Adjust the pH value to 7.3 with triethanolamine, filter, vacuum dry, and pulverize to obtain the product. The average particle size of the fine powder is 2.5 microns, and the specific surface area is 16m 2 / g, the porosi...

Embodiment 3

[0038] Example 3: Dissolve 12 parts of PVA1788 in 600 parts of water, add to the mixer, start stirring, then add 120 parts of urea, 42 parts of melamine, 100 parts of solid formaldehyde, adjust the pH value to 7.0 with sodium carbonate; after mixing evenly, then Transfer the material into the prepolymerization reactor, start the stirring, start to heat up to 70°C, and maintain the temperature for 2 hours; the prepolymer is cooled to 40°C through the cooler, enters another mixer, and adds sulfamic acid to it Adjust the prepolymer PH to 1.5, then let the prepolymer enter the main polycondensation reactor, heat up to 80°C, maintain the temperature for 1.5 hours, transfer the product to the neutralization mixer, add 800 parts of water, 0.27 parts of Span40 , disperse and wash, adjust the pH value to 7.0 with sodium carbonate, filter, vacuum dry, and pulverize to obtain the product. The average particle size of the fine powder is 3.2 microns, and the specific surface area is 18m 2...

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Abstract

The invention discloses a method for preparing and synthesizing novel multifunction organic micropowder. Urea and formaldehyde are polycondensed under proper processing conditions; proper raw material formulas and processing conditions are controlled, thus getting the multifunction organic micropowder with very homogeneous particle sizes. The initial particle size of the product is less than 1 micrometer; the product has high specific area, porosity and decomposition temperature. The product can be widely applied in the fields of coating, oil paint, plastic, papermaking, slow release of medicines and so on, which shows excellent photoextinction property, high scratch resistance, wear and tear resistance, acid and alkali resistance, solvent resistance, weatherability and feels smooth. Seenfrom the aspect of economic benefit, the product has the characteristics of low cost and high added values, which is promising in market.

Description

technical field [0001] The invention relates to the field of preparation of functional polymer materials, in particular to a method for synthesizing multifunctional organic micropowder. technical background [0002] In recent years, the research on the synthesis of functional polymer materials has attracted people's attention. Higher scientific research institutions and large enterprises have increased their investment in theoretical research and application development in the field of functional polymer materials. It has been found that functional polymer materials are used in coatings, There are more and more applications in the fields of ink, plastic, film, papermaking, biomedicine, and drug sustained release. In particular, multifunctional organic polymer micropowders show bright prospects in the fields of chemical technology and functional polymers. [0003] The performance characteristics of multifunctional organic micropowder are mainly determined by its special funct...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08G12/12C08G12/38C08J3/12C08L61/24C08L61/30
Inventor 杨少平李胜吴峰
Owner ZHEJIANG JCOLOR TECH CO LTD
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