Preparation method of acrylic ester emulsion

An acrylate and emulsion technology, applied in the field of preparation of acrylate emulsion, can solve the problems of high energy consumption, low product molecular weight, complex process and the like

Active Publication Date: 2010-04-14
JINJIANG NANXING PRINTING & DYEING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its disadvantages are polymerization under higher temperature conditions, high energy consumption, relat

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0012] Example one:

[0013] The preparation method of the acrylate emulsion of the present invention is realized by the following steps:

[0014] 1. Add a certain amount of water, monomer, emulsifier and cross-linking agent to the reaction pot, and stir at a speed of 100 revolutions per minute at a temperature of 15°C to 40°C for 25 minutes; where: the amount of water is 620 weight The monomers include 7 parts by weight of acrylic acid, 200 parts by weight of butyl acrylate, 40 parts by weight of ethyl acrylate, 50 parts by weight of styrene, 30 parts by weight of methyl methacrylate and 20 parts by weight of acrylonitrile ; Emulsifier includes 3 parts by weight of sodium lauryl sulfate, 4 parts by weight of isomeric alcohol polyoxyethylene ether and 15 parts by weight of Pingjia; crosslinking agent includes 5 parts by weight of N-methylol acrylamide and 6 parts by weight of itaconic acid;

[0015] 2. Add oxidant and continue stirring for 15 minutes. The oxidant includes 0.13% amm...

Example Embodiment

[0018] Embodiment two:

[0019] The preparation method of the acrylate emulsion of the present invention is realized by the following steps:

[0020] 1. Add a certain amount of water, monomer, emulsifier and cross-linking agent into the reaction pot, and stir at a speed of 90 rpm for 30 minutes at a temperature of 15°C-40°C; where: the amount of water is 580 weight The monomers include 6 parts by weight of acrylic acid, 190 parts by weight of butyl acrylate, 50 parts by weight of ethyl acrylate, 60 parts by weight of styrene, 35 parts by weight of methyl methacrylate and 25 parts by weight of acrylonitrile The emulsifier includes 4 parts by weight of sodium lauryl sulfate, 4.5 parts by weight of isomeric alcohol polyoxyethylene ether and 18 parts by weight of Pingjia; the crosslinking agent includes 4.5 parts by weight of N-methylol acrylamide and 8 parts by weight of itaconic acid;

[0021] 2. Add oxidant and continue stirring for 18 minutes. This oxidant includes 0.14% of the abo...

Example Embodiment

[0024] Embodiment three:

[0025] The preparation method of the acrylate emulsion of the present invention is realized by the following steps:

[0026] 1. Add a certain amount of water, monomer, emulsifier and crosslinking agent into the reaction pot, and stir at a speed of 100 revolutions per minute at a temperature of 15°C-40°C for 20 minutes; where: the amount of water is 630 weight The monomers include 5 parts by weight of acrylic acid, 180 parts by weight of butyl acrylate, 60 parts by weight of ethyl acrylate, 55 parts by weight of styrene, 40 parts by weight of methyl methacrylate and 30 parts by weight of acrylonitrile The emulsifier includes 3.5 parts by weight of sodium lauryl sulfate, 5 parts by weight of isomeric alcohol polyoxyethylene ether and 20 parts by weight of Pingjia; the crosslinking agent includes 4 parts by weight of N-methylol acrylamide and 7 parts by weight of itaconic acid;

[0027] 2. Add oxidant and continue stirring for 20 minutes. The oxidant include...

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PUM

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Abstract

The invention discloses a preparation method of acrylic ester emulsion, which is realized by the following steps: 1. adding quantitative water, a monomer, an emulsifier and a crosslinker into a reactor and stirring; 2. adding an oxidant and stirring; 3. adding a reducing agent and a stabilizer and continuously stirring, controlling temperature to rise, self-warming through monomer polymerizing heat releasing, and starting heat preservation; and 4. adding hydrogen peroxide and tert-butyl hydroperoxide, keeping heat preservation, reducing the temperature below 45 DEG C, neutralizing to lead the pH to be 6.8-7 by ammonia water, and filtering and discharging, thus obtaining the acrylic ester emulsion. Compared with the prior art, the method adopts an one-off feeding technological scheme, improves the work efficiency and product stability, saves energy and reduces environmental pollution by adopting low-temperature oxidation reduction reaction, can obtain higher molecular weight through low-temperature reaction, and improves the product quality and environmental performance.

Description

technical field [0001] The present invention relates to the preparation method of acrylate emulsion. Background technique [0002] In the prior art, the preparation methods of acrylate emulsion mainly include redox method and semi-continuous emulsion polymerization process. [0003] Among them, the redox method is to add emulsifier, buffer, oxidant, part of acrylate mixed monomer and part of deionized water into the reaction kettle; stir, heat to polymerization temperature of 40°C, pre-emulsify for 30 minutes, and then add the remaining monomers dropwise And reducing agent, heated to 50 ℃ -60 ℃ constant temperature polymerization 4h. Then heat up to 70°C-75°C, keep warm for 1h, stop stirring, cool to room temperature, add ammonia water, adjust PH=7-8, and discharge. Its disadvantages are large energy consumption, long dripping time, complicated process and poor product stability. [0004] The semi-continuous emulsion polymerization process is to inject monomers such as bu...

Claims

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Application Information

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IPC IPC(8): C08F220/18C08F2/26C08F2/30
Inventor 施维科陈建新
Owner JINJIANG NANXING PRINTING & DYEING MATERIAL
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