Water dispersion type emulsion of crylic acid, preparation method and usage

An acrylic emulsion and dispersion technology, which is applied in textiles and papermaking, chemical instruments and methods, anion exchange, etc., can solve the problems of large amount of organic solvent usage and poor solvent resistance of resin, and achieve low cost, not easy to deform, and easy to promote Effect

Inactive Publication Date: 2005-01-12
GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The idea of ​​this method is similar to Stevens' adsorption method, but the amount of

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0036] Example 1

[0037] First, mix 100 parts of acrylic monomer with 195 parts of butyl acrylate, 97 parts of methyl methacrylate, and 14 parts of vinyl acetate. Take 1 / 3 of the total mixed monomers and mix with 120 parts. Ionized water, stir for 50-60min for pre-emulsification. Adjust the pH to about 4-6 with sodium bicarbonate. The temperature was raised to 78° C., 0.3 part of ammonium persulfate was added to initiate the reaction, and the temperature was kept and stirred for 50 minutes. The reaction was completed until the product was blue and there was no monomer reflux. Add the remaining mixed monomers and 200 parts of deionized water in batches to the reaction kettle, and control the dropping rate to finish dropping within 1-2h. When the reaction temperature rises to 78°C, add 1 part of initiator ammonium persulfate, adjust at any time The pH is about 7.5 and the temperature is kept at 72°C, and the stirring speed is 80-100r / min.

[0038] Finally, 0.05 parts of initiator a...

Example Embodiment

[0040] Example 2

[0041] Mix 100 parts of acrylic monomers, 270 parts of butyl acrylate, 100 parts of methyl methacrylate, 4 parts of acrylonitrile, and 20 parts of vinyl acetate monomers. Take 1 / 3 of the total mixed monomers and mix with 170 parts. A portion of deionized water, stirring for 60 minutes for pre-emulsification.

[0042] Adjust the pH to about 4-6 with sodium bicarbonate. When the temperature was raised to 81°C, 0.7 parts of potassium persulfate was added to initiate the reaction, and the temperature was kept and stirred for 70 minutes. The reaction did not return until the monomer refluxed. At this time, the product was blue. Add the remaining mixed monomer and 380 parts of deionized water to the reaction kettle in batches. Control the dropping rate to finish dropping within 1-2h. The reaction temperature will rise to 80℃ while adding 1.5 parts of initiator. Adjust the pH to about 7 at any time, keep warm 76℃, the stirring speed is 80r / min.

[0043] Finally, 0.08 i...

Example Embodiment

[0045] Example 3

[0046] First, 100 parts of acrylic monomers are mixed with 300 parts of butyl acrylate, 140 parts of methyl methacrylate, 9 parts of acrylonitrile, and 19 parts of vinyl acetate monomers. Take 1 / 3 of the total mixed monomers to match 200 parts of deionized water, stirred for 60 minutes for pre-emulsification.

[0047] Adjust the pH to about 4-6 with sodium bicarbonate. Increase the temperature to 80°C and add 0.5 part of ammonium persulfate to initiate the reaction, and keep stirring for 70 min. The reaction will stop until there is no monomer reflux, at which time the product is blue. Add the remaining 2 / 3 mixed monomer and 400 parts of water in batches at the same time in the reaction kettle, control the dropping rate to finish dropping within 1-2h, and add 2 parts of initiator while the reaction temperature rises to 80℃. Sodium adjusts the pH to 8.5 at any time, keeps the temperature at 80°C, and stirs at 90r / min.

[0048] Finally, 0.05 parts of initiator are...

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Abstract

The invention relates to a water dispersible type polyacrylic emulsion whose emulsoid surface has functional group, its preparation method and application. Said emulsion is made up by using (by weight portion) acrylic acid 100, butyl acrylate 180-400, methyl methacrylate 80-160, vinyl acetate 10-20, acrylonitrile 0-10, deionized water 250-780 and radical initiator 0.5-3 through the processes of reaction and polymerization. Its preparation method includes the following steps: firstly, using 1/3-2/5 of mixed monomer, making pre-emulsification, regulating pH value to 4-6, heating to 74-83 deg.C, making partial radical initiator produce initiation reaction, then drop-adding residual mixed monomer, at same time adding initiator to make reaction. Said polyacrylic emulsion only has need of coating, it can make the reactive acrylic resin into reactive film adhered to and covered over the surface of carrier so as to form the material with ion-exchange function. Its ion-exchange performance is not influenced by arrier property.

Description

field of invention [0001] The invention relates to a water-dispersed acrylic emulsion with functional groups on the surface of latex, a preparation method and application thereof. Background of the invention [0002] At present, the acrylic resin used for ion exchange by coating and forming a film has not been reported in the literature. The carrier of ion exchange composite materials is often polystyrene-divinylbenzene, glass beads and cellulose, etc., and ion exchange functional groups often need It is connected to the monomer through complex chemical reactions, or it is bonded to the carrier by adding a cross-linking agent. There is no similar report that ion-exchange resins can be prepared on general-purpose materials by a simple method of coating and film formation. Currently available ion exchange materials and molding processes are divided into: [0003] 1. The polymer (such as cellulose) is used as the carrier, and the reactive functional group is grafted on it by ...

Claims

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Application Information

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IPC IPC(8): B01J41/12B01J47/12C08F2/22C08F4/40C08F220/16D06M15/263
Inventor 葛家良周琨李业琛
Owner GUANGZHOU INST OF GEOCHEMISTRY - CHINESE ACAD OF SCI
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