A kind of preparation method of solid acrylic resin

A solid acrylic and resin technology, applied in applications, inks, household appliances, etc., can solve the problems of high pressure, high temperature, and the temperature of solid acrylic resin is difficult to control, so as to improve the conversion rate, overcome the difficult control of polymerization temperature, and eliminate residual single body effect

Active Publication Date: 2017-01-04
INST OF CHEM CHINESE ACAD OF SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to overcome the disadvantages that the temperature of the solid acrylic resin prepared by the reactor is not easy to control at present, and the pressure and temperature of the tubular reactor are too high, so as to provide a kind of solid acrylic resin prepared by combining the reactor polymerization and the tubular polymerization. Acrylic Method

Method used

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  • A kind of preparation method of solid acrylic resin
  • A kind of preparation method of solid acrylic resin
  • A kind of preparation method of solid acrylic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] See figure 1 . Add 20 kg of styrene, 40 kg of ethyl acrylate, 5 kg of methacrylonitrile, 3 kg of benzoyl peroxide, 1 kg of thioglycolic acid, and 20 kg of polyurethane into the material tank 1, stir and dissolve After uniformity, put it into the reactor 2 at one time, raise the temperature from room temperature to 120°C, and carry out the polymerization reaction at 0.1MPa; during the reaction, the total conversion rate of the above-mentioned monomers is continuously monitored. When the total conversion rate of the above-mentioned monomers in the reactor is When the rate was 40%, 11 kilograms of ethylene glycol butyl ether acetates were gradually dripped into the reactor from the solvent storage tank 8 and carried out viscosity reduction, so that the material in the reactor was kept in a good flow state all the time until After making the total conversion of the above-mentioned monomers reach 70%, the resulting dilution is discharged from the reactor 2 into the storage ...

Embodiment 2

[0031] See figure 1. 55 kg of α-methylstyrene, 10 kg of butyl acrylate, 3 kg of 2-hydroxyethyl acrylate, 2 kg of maleic acid, 1 kg of dilauroyl peroxide, 2.75 kg of 3- Add mercaptopropionic acid, 10 kg of alkyd resin, and 2.5 kg of tertoctyl phenolic resin into the material tank 1, stir and dissolve evenly, and put it into the reactor 2 at one time, raise the temperature from room temperature to 180 ° C, and carry out polymerization reaction at 1 MPa During the reaction, constantly monitor the total conversion rate of the above-mentioned monomers, when the total conversion rate of the above-mentioned monomers in the reactor 2 was 50%, start to gradually drop 13.75 kilograms of propylene glycol methyl ether into the solvent storage tank 8 Viscosity reduction is carried out in the reactor 2, so that the material in the reactor 2 is kept in a good flow state all the time, until the total conversion rate of the above-mentioned monomers reaches 80%, the gained dilution is discharg...

Embodiment 3

[0033] See figure 1 . 20 kg of benzyl acrylate, 17.5 kg of benzyl methacrylate, 20 kg of ethyl acrylate, 5 kg of 2-ethylhexyl acrylate, 5 kg of glycidyl acrylate, 5 kg of acrylic acid, 7.5 kg of 4-pentene-1,2,3,4-tetracarboxylic acid, 0.5 kg of tert-amyl peroxy-2-ethylhexanoate, 3 kg of butyl 3-mercaptopropionate, 5 kg of polyphenylene Ether and 6.5 kg of polysulfone were added to the material tank 1, stirred and dissolved evenly, and then put into the reactor 2 at one time, and the temperature was raised from room temperature to 160 ° C, and the polymerization reaction was carried out at 0.7 MPa; during the reaction, the above-mentioned monomers were continuously monitored. Total conversion rate, when the total conversion rate of the above-mentioned monomers in the reactor 2 was 45%, the propylene glycol methyl ether acetate of 1 kilogram, the propylene glycol ethyl ether propionate of 4 kilograms were gradually dripped from the solvent storage tank 8 into the reactor 2 for...

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Abstract

The invention relates to a preparation method of an acrylic resin used in the paint and printing ink industry, in particular to a preparation method of a solid acrylic resin. Add hard monomers, soft monomers, functional monomers, initiators, chain transfer agents and auxiliary components into the reactor for polymerization; when the total conversion rate of the above-mentioned monomers in the reactor is 40-50% When starting to drop the diluted solvent into the reactor gradually to reduce the viscosity until the total conversion rate of the above-mentioned monomers reaches 70-80%, the resulting dilution is discharged from the reactor into the storage tank; then The dilution is continuously poured into the tubular reactor from the storage tank to carry out the polymerization reaction; the reaction product enters the devolatilization tower after coming out of the tubular reactor, and the solid acrylic resin after removing the diluted solvent is discharged from the devolatilization tower. The lower portion was discharged to obtain a solid acrylic resin. The invention overcomes the disadvantages that bulk polymerization is easy to produce detonation phenomenon and the polymerization temperature is difficult to control, and improves the utilization efficiency of equipment.

Description

technical field [0001] The invention relates to a preparation method of an acrylic resin used in the paint and printing ink industry, in particular to a preparation method of a solid acrylic resin. Background technique [0002] Generally, solid acrylic resins for coatings and inks are produced by bulk polymerization or suspension polymerization. The product obtained by adopting the bulk polymerization method is block solid acrylic resin, which is sold after being heated, melted and granulated. The polymerization self-acceleration effect of the bulk polymerization method in the middle and late stages of polymerization will cause the molecular weight distribution of the obtained solid acrylic resin to be too wide, and its molecular weight distribution coefficient is between 3 and 5. Use a solid acrylic resin with a molecular weight distribution that is too wide The storage of the manufactured coating or ink has the problem of poor stability, which is manifested in the phenome...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/18C08F212/08C08F220/44C08F212/12C08F220/28C08F222/02C08F220/14C08F220/22C08F226/10C08F2/38C09D11/107
Inventor 王旭朋宋延林杨明刘云霞金小玲秦明明
Owner INST OF CHEM CHINESE ACAD OF SCI
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