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Preparation method of large-particle-size polyacrylate latex particles

A technology of polyacrylate and large particle size, which is applied in the field of preparation of specific agglomerating agents, can solve the problems of long production cycle of large particle size latex particles, single particle size of synthetic latex, complicated operation, etc., and achieve particle size and particle size Good distribution controllability, excellent impact resistance and good repeatability

Active Publication Date: 2021-11-02
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One-step direct synthesis of large particle size latex particles has a long production cycle, poor stability, complicated operation, and single particle size of synthetic latex, which has been gradually replaced by the agglomeration method

Method used

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  • Preparation method of large-particle-size polyacrylate latex particles
  • Preparation method of large-particle-size polyacrylate latex particles
  • Preparation method of large-particle-size polyacrylate latex particles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] (1) Add 0.75g sodium lauryl sulfate and 700g deionized water into a 1L four-neck flask, stir at room temperature for 30 minutes, then add 37.51g n-butyl acrylate and 0.375g 1,4-butanediol diacrylic acid The ester was added to the four-necked flask, stirred for 30 minutes, nitrogen gas was introduced, the condenser was connected, and the temperature was raised. At 75°C, 35 g of an aqueous solution dissolved with 0.75 g of potassium persulfate was added to the four-necked flask, and the reaction was kept at reflux for 1 hour. Add 0.47g sodium lauryl sulfate and 20g deionized water to the four-necked bottle afterwards, mix 150g n-butyl acrylate and 36g glycidyl methacrylate, drop into the four-necked bottle within two hours, and During the dropwise addition, 50 g of an aqueous solution in which 1.27 g of potassium persulfate was dissolved was added to the four-necked bottle three times. After the dropwise addition of the mixed monomers is completed, the heat preservation r...

Embodiment 2

[0035](1) Add 0.75g sodium lauryl sulfate and 700g deionized water into a 1L four-neck flask, stir at room temperature for 30 minutes, then add 37.50g n-butyl acrylate and 0.375g 1,4-butanediol diacrylic acid The ester was added to the four-necked flask, stirred for 30 minutes, nitrogen gas was introduced, the condenser was connected, and the temperature was raised. At 75°C, 35 g of an aqueous solution dissolved with 0.75 g of potassium persulfate was added to the four-necked flask, and the reaction was kept for 1 hour. Add 0.47g sodium lauryl sulfate and 20g deionized water to the four-necked bottle afterwards, mix 150g n-butyl acrylate and 36g glycidyl methacrylate, add the four-necked bottle within two hours, and drop During the addition process, 50 g of an aqueous solution in which 1.27 g of potassium persulfate was dissolved was added to the four-necked bottle three times. After the dropwise addition of the mixed monomers is completed, the heat preservation reaction is ca...

Embodiment 3

[0039] (1) Add 0.75g sodium lauryl sulfate and 700g deionized water into a 1L four-neck flask, stir at room temperature for 30 minutes, then add 37.50g n-butyl acrylate and 0.375g 1,4-butanediol diacrylic acid The ester was added to the four-necked flask, stirred for 30 minutes, nitrogen gas was introduced, the condenser was connected, and the temperature was raised. At 75°C, 35 g of an aqueous solution dissolved with 0.75 g of potassium persulfate was added to the four-necked flask, and the reaction was kept for 1 hour. Add 0.47g sodium lauryl sulfate and 20g deionized water to the four-necked bottle afterwards, mix 150g n-butyl acrylate and 36g glycidyl methacrylate, add the four-necked bottle within two hours, and drop During the addition process, 50 g of an aqueous solution in which 1.27 g of potassium persulfate was dissolved was added to the four-necked bottle three times. After the dropwise addition of the mixed monomers is completed, the heat preservation reaction is c...

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Abstract

The invention relates to a preparation method of large-particle-size polyacrylate latex particles. The method comprises the following steps of: (1) preparing polyacrylate to-be-agglomerated latex; (2) mixing dimethylaminoethyl methacrylate, deionized water and a molecular weight regulator for reaction to obtain a macromolecular agglomerating agent; and (3) mixing and reacting the to-be-agglomerated latex with the macromolecular agglomerating agent to obtain agglomerated large-particle-size particle latex. The particle size and particle size distribution of the finally prepared large-particle-size latex particles can be regulated and controlled by controlling the pH, the adding amount of the agglomerating agent and the concentration of the agglomerating agent.

Description

technical field [0001] The invention relates to a method for preparing large-diameter polyacrylate latex particles, in particular to a preparation technology of a specific agglomerating agent, and the particle diameter of polyacrylate latex is regulated by the agglomerating agent. Diameter polyacrylate latex particles can be used in the production of high-performance ASA resin. Background technique [0002] ASA resin is a ternary graft copolymer composed of n-butyl acrylate-styrene-acrylonitrile. ASA resin replaces polybutadiene rubber in ABS resin with poly-n-butyl acrylate without double bonds, so ASA Resin has high impact resistance, high mechanical strength, good weather resistance and chemical corrosion resistance, and is widely used in electronic equipment, automobiles, building materials and other fields. Similar to the structure of ABS, ASA resin is usually made by grafting a layer of styrene (St) and acrylonitrile (AN) copolymer plastic phase shell on the outer cor...

Claims

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Application Information

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IPC IPC(8): C08C1/07C08F120/34C08F220/18C08F220/32
CPCC08C1/07C08F120/34C08F220/1804C08F220/325
Inventor 潘明旺李耀兴袁金凤张广林潘志成
Owner HEBEI UNIV OF TECH
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