Preparation method of hydroxyl group-containing functional monomer modified acrylate copolymer emulsion

A technology of functional monomer and acrylate, applied in the direction of coating, can solve problems such as increasing the cost of emulsion, and achieve the effect of reducing the cost of emulsion, improving anti-icing performance and improving water resistance

Active Publication Date: 2012-05-23
ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to improve the water resistance and corrosion resistance of acrylic emulsions, people have tried to do a lot of modifications to acrylic emulsions. At present, the most widely used is to synthesize acrylic emulsions with high silicon content (Chinese patent CN1629202A; CN1217360A), which has excellent performance. increased, but at the same time increased the cost of the emulsion

Method used

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  • Preparation method of hydroxyl group-containing functional monomer modified acrylate copolymer emulsion
  • Preparation method of hydroxyl group-containing functional monomer modified acrylate copolymer emulsion
  • Preparation method of hydroxyl group-containing functional monomer modified acrylate copolymer emulsion

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Example 1: Add 175.0g double-distilled water and 1.5g EP110 into the pre-emulsifier, stir rapidly at 1000r / min at 700-1000r / min, after completely dissolving, add 95.0g St, 95.0g BA, 5.0 g AA monomer mixture was added, and continued to stir at 1000r / min for 30min to obtain a stable pre-emulsion; add 150.0g double-distilled water, 0.5 g emulsifier EP110, 1.5g emulsifier CA877, stir rapidly at 1000r / min, after complete dissolution, add 7.5g St, 7.5g BA and 2.1g DAP monomer mixture, continue stirring at 1000r / min for 30min . Reduce the stirring speed to 150r / min, raise the temperature to 75°C, and then add 40.3g of APS aqueous solution into the reactor to initiate polymerization. When the system turns blue, add the pre-emulsion and 46.6g of APS aqueous solution dropwise with the peristaltic pump and the syringe pump respectively. When the pre-emulsion remains 1 / 3 of its initial mass, add the hydroxyl-containing functional monomer to the remaining pre-emulsion Hydroxypropy...

Embodiment 2

[0030]Example 2: Add 175.0g double-distilled water and 1.5g EP110 into the pre-emulsifier, stir rapidly at 800r / min, and after completely dissolving, add 95.0g St, 95.0g BA, 5.0gAA monomer mixture , continue stirring at 800r / min for 30min to obtain a stable pre-emulsion; add 150.0g double-distilled water, 0.5g emulsifier EP110, 1.5g For emulsifier CA877, stir rapidly at 800r / min. After it is completely dissolved, add 7.5g St, 7.5g BA and 2.1g DAP monomer mixture, and continue stirring at 800r / min for 30min. Reduce the stirring speed to 200r / min, raise the temperature to 75°C, and then add 40.3g of APS aqueous solution into the reactor to initiate polymerization. When the system turns blue, add the pre-emulsion and 46.6g of APS aqueous solution dropwise with the peristaltic pump and the syringe pump respectively. When the pre-emulsion remains 1 / 20 of its initial mass, add the hydroxyl-containing functional monomer to the remaining pre-emulsion Hydroxyethyl acrylate, so that it...

Embodiment 3

[0031] Example 3: Add 175.0g double-distilled water and 1.5g EP110 into the pre-emulsifier, stir rapidly at 800r / min, and after completely dissolving, add 95.0g St, 95.0g BA, 5.0gAA monomer mixture , continue stirring at 800r / min for 30min to obtain a stable pre-emulsion; add 150.0g double-distilled water, 0.5g emulsifier EP110, 1.5g For emulsifier CA877, stir rapidly at 800r / min. After it is completely dissolved, add 7.5g St, 7.5g BA and 2.1g DAP monomer mixture, and continue stirring at 800r / min for 30min. Reduce the stirring speed to 200r / min, raise the temperature to 75°C, and then add 40.3g of APS aqueous solution into the reactor to initiate polymerization. After the system turns blue, add pre-emulsion and 46.6g of APS aqueous solution dropwise with peristaltic pump and syringe pump respectively, and when the remaining amount of pre-emulsion is 1 / 4 of the initial mass, add 3.14g NHMA monomer to it to make it become the same as The mixed solution of functional monomers c...

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Abstract

The invention discloses a preparation method of hydroxyl group-containing functional monomer modified acrylate copolymer emulsion. The preparation method adopts the semi-continuous emulsion polymerization method; when the nucleation of particles is performed, crosslinking agent is used to increase the internal compactness of latex particles; and when the acrylate unsaturated comonomer pre-emulsion is not added completely, hydroxyl group-containing functional monomer is added in the system to increase the compactness of the formed latex film. By adopting the preparation method, the water resistance and ice-covering-proof performance of the latex film can be greatly increased.

Description

technical field [0001] The invention relates to a preparation method of a copolymer, in particular to a preparation method of a hydroxyl-containing functional monomer-modified acrylate copolymer emulsion, and belongs to the technical field of polymer materials. Background technique [0002] Acrylate copolymer emulsion refers to the emulsion prepared by copolymerization of acrylate or methacrylate and styrene as the main monomer. Acrylate copolymer emulsion has the characteristics of low cost, good heat resistance, weather resistance, corrosion resistance and stain resistance, and is widely used in the coating industry. Acrylate copolymer emulsion, as the main film-forming substance, has a great influence on the hardness, water resistance and bonding strength with the substrate of the film. Generally speaking, the acrylate copolymer emulsion has disadvantages such as poor compactness, high water vapor and oxygen permeability, etc., which restricts its anti-corrosion performa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F212/08C08F220/18C08F220/28C08F220/58C08F220/06C08F2/26C08F2/30C08F4/40C09D125/14C09D133/08
Inventor 张都清孔祥正邹栋朱晓丽
Owner ELECTRIC POWER RESEARCH INSTITUTE OF STATE GRID SHANDONG ELECTRIC POWER COMPANY
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