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Modification preparation method of soft polyacrylic resin microspheres

A technology of polyacrylic resin and polymethyl methacrylate, which is applied in the field of modification and preparation of soft polyacrylic resin microspheres. Industrial production and market application, etc., to achieve the effect of easy drying and crushing, no impact on optical properties and scratch resistance, and good elasticity

Active Publication Date: 2021-02-23
ZHEJIANG JCOLOR TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] For the preparation method of this type of product, it can be seen from some relevant literature that the use of low glass transition temperature acrylic monomers and some crosslinking monomers can polymerize elastic polyacrylic resin particles, and these particles are in the water phase. It has good dispersion performance, but after filtering and drying, we found that these particles form a rubber-like filter cake after dehydration, and it is difficult to dry and pulverize them into powdery solid materials, which greatly limits the product. The industrial production and market application, especially in the fields of films and plates used as light diffusing agents, must be dehydrated and dried, and crushed into solid powder materials with good fluidity, without particle agglomeration

Method used

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  • Modification preparation method of soft polyacrylic resin microspheres

Examples

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Comparison scheme
Effect test

Embodiment 1

[0034] 1. Preparation of nanoscale polymethyl methacrylate particle dispersion

[0035] Place a four-neck flask equipped with a stirrer, thermometer, reflux condenser and nitrogen tube in a super constant temperature water bath, add 900 parts of deionized water, then add 6 parts of sodium succinyl sulfonate, stir and dissolve to form an emulsion, Then add 100 parts of methyl methacrylate, continue to stir, raise the temperature to 65°C, add 1 part of ammonium persulfate, and maintain this temperature for 4 hours to obtain a dispersion of nano-sized polymethyl methacrylate particles.

[0036] 2. Preparation of modified soft polyacrylic resin microspheres

[0037] Lower the above dispersion to room temperature, take 150 parts, add 37.5 parts of 10% polyvinyl alcohol solution, stir and dissolve evenly, then add 850 parts of deionized water, and further stir evenly to form a low-concentration dispersion system;

[0038] Dissolve 2.5 parts of benzoyl peroxide in 200 parts of methy...

Embodiment 2

[0043] 1. Preparation of nanoscale polymethyl methacrylate particle dispersion

[0044] Place a four-neck flask equipped with a stirrer, thermometer, reflux condenser and nitrogen tube in a super constant temperature water bath, add 900 parts of deionized water, then add 6 parts of fatty alcohol polyoxyethylene ether ammonium sulfate, stir and dissolve into Then add 100 parts of methyl methacrylate to the emulsion, continue to stir, raise the temperature to 75°C, add 1 part of ammonium persulfate, and maintain this temperature for 4 hours to obtain a dispersion of nano-sized polymethyl methacrylate particles.

[0045] 2. Preparation of modified soft polyacrylic resin microspheres

[0046] Lower the above dispersion to room temperature, take 150 parts, add 30.5 parts of 10% sodium polyacrylate solution, stir and dissolve evenly, then add 850 parts of deionized water, and further stir to form a low-concentration dispersion system.

[0047] Dissolve 2.5 parts of azobisisobutyron...

Embodiment 3

[0052] 1. Preparation of nanoscale polymethyl methacrylate particle dispersion

[0053] Place a four-neck flask equipped with a stirrer, thermometer, reflux condenser and nitrogen tube in a super constant temperature water bath, add 900 parts of ethanol, then add 10 parts of sodium lauryl sulfate, stir to dissolve into an emulsion, and then Add 100 parts of methyl methacrylate, continue to stir, raise the temperature to 60°C, add 1 part of potassium persulfate, and maintain this temperature for 4 hours to obtain a dispersion of nano-sized polymethyl methacrylate particles.

[0054] 2. Preparation of modified soft polyacrylic resin microspheres

[0055] Lower the above dispersion to room temperature, take 150 parts, add 15 parts of 8% hydroxyethyl cellulose solution, stir and dissolve evenly, then add 850 parts of ethanol, and stir further to form a low-concentration dispersion system.

[0056] Dissolve 2.5 parts of azobisisoheptanonitrile in 100 parts of n-butyl acrylate, 100...

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Abstract

The invention relates to a modification preparation method of soft polyacrylic resin microspheres. The invention aims to provide the preparation method of the modified soft polyacrylic resin microspheres, and the soft polyacrylic resin microspheres prepared by the method can be dried and crushed after dehydration in the later period to form powder with good fluidity, so that the powder can be usedas a light diffusion agent to be applied to the fields of light diffusion films and light diffusion plates. According to the technical scheme, the preparation method sequentially comprises the following steps: (1) preparing polymethyl methacrylate nanoparticle dispersion liquid; (2) after the temperature of the nanoscale polymethyl methacrylate microsphere particle dispersion liquid is reduced toroom temperature, adding a dispersing agent, uniformly dissolving, then adding a dispersing medium, and uniformly stirring to form a low-concentration dispersion liquid system; and adding an acrylicmonomer dissolved with an initiator, and then dispersing and mixing to enable all the components in the system to be uniformly mixed to obtain micron-sized monomer droplets with uniform particle sizes.

Description

technical field [0001] The invention relates to a modification preparation method of soft polyacrylic acid resin microspheres, in particular to a method for preparing microspheres by composite modification of polymethyl methacrylate nanoparticles and soft polyacrylic acid resin microspheres. Background technique [0002] Soft polyacrylic resin microspheres have good elasticity and certain deformability, and can be used as coating additives in light diffusion films, diffusion plates, high-end tactile surface substrates and cosmetics, etc., which can effectively prevent scratches on the contact surface, Maintain the excellent touch and elasticity of the surface of the material; this type of microsphere particles are mainly polymerized by acrylic monomers with a low glass transition temperature, and the polymerization process mainly adopts the methods of suspension polymerization, emulsion polymerization, and dispersion polymerization. It has been mentioned in some documents at...

Claims

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Application Information

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IPC IPC(8): C08L33/08C08L33/12C08F220/14C08F222/14C08F2/20C08F120/14C08F2/26
CPCC08L33/08C08F220/14C08F2/20C08F120/14C08F2/26C08L33/12C08F222/102Y02E60/10
Inventor 杨少平李胜何建伟
Owner ZHEJIANG JCOLOR TECH CO LTD
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