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A kind of synthetic method of acrylic resin

The technology of an acrylic resin and a synthesis method, which is applied in the field of polymer copolymer preparation, can solve problems such as low monomer conversion rate, and achieve the effects of simple implementation steps, improved conversion rate, and improved production efficiency

Inactive Publication Date: 2021-02-26
HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the problems existing in the prior art, the purpose of the present invention is to provide a suspension polymerization preparation process of acrylic resin to solve the problem of low monomer conversion rate in the preparation process of the existing acrylic resin

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Add 0.1g of PVA1799 polyvinyl alcohol, 1g of sodium sulfate and 50g of deionized water into the reactor equipped with electric stirring and reflux condensing device, raise the temperature to 50°C, and stir to dissolve the polyvinyl alcohol and sodium sulfate;

[0026] (2) Accurately weigh 0.05g of initiator dibenzoyl peroxide, place it in a dry and clean container, add monomers of 3g of butyl acrylate, 1g of 2-hydroxyethyl acrylate and 6g of methyl methacrylate, completely Drop into the reactor of step (1) after dissolving;

[0027] (3) Keep the stirring speed of the reactor at 200 rpm, so that the monomers form uniform beads in the water phase, and raise the temperature to 70°C until the beads are finalized;

[0028] (4) Keep the stirring speed of the reactor at 200 rpm, raise the temperature to 85°C, and react at constant temperature for 4 hours;

[0029] (5) Lower the temperature of the reaction system to 30° C., filter, wash, and dry to obtain an acrylic resin....

Embodiment 2

[0031] (1) Add 0.05g of PVA1799 polyvinyl alcohol, 4g of sodium nitrite and 50g of deionized water into a reactor equipped with electric stirring and reflux condensing device, raise the temperature to 50°C, and stir to dissolve the polyvinyl alcohol and sodium nitrite;

[0032] (2) Accurately weigh 0.1g of initiator azobisisoheptanonitrile, place it in a dry and clean container, add monomers of 6g of butyl acrylate, 1g of 2-hydroxypropyl acrylate and 3g of methyl methacrylate, completely Drop into the reactor of step (1) after dissolving;

[0033] (3) Keep the stirring speed of the reactor at 200 rpm, so that the monomers form uniform beads in the water phase, and raise the temperature to 70°C until the beads are finalized;

[0034] (4) Keep the stirring speed of the reactor at 200 rpm, raise the temperature to 85°C, and react at constant temperature for 4 hours;

[0035] (5) Lower the temperature of the reaction system to 30° C., filter, wash, and dry to obtain polyacrylic a...

Embodiment 3

[0037] (1) Add 1g of PVA1799 polyvinyl alcohol, 0.5g of sodium bicarbonate and 50g of deionized water into a reactor equipped with electric stirring and reflux condensing device, raise the temperature to 50°C, and stir to dissolve the polyvinyl alcohol and sodium bicarbonate;

[0038] (2) Accurately weigh 0.05g of initiator azobisisobutyronitrile, place it in a dry and clean container, add monomers of 3g of butyl acrylate, 1g of 2-hydroxyethyl methacrylate and 6g of methyl methacrylate , drop into the reactor of step (1) after completely dissolving;

[0039] (3) Keep the stirring speed of the reactor at 200 rpm, so that the monomers form uniform beads in the water phase, and raise the temperature to 70°C to shape the beads;

[0040] (4) Keep the stirring speed of the reactor at 200 rpm, raise the temperature to 85°C, and react at constant temperature for 6 hours;

[0041] (5) Lower the temperature of the reaction system to 30° C., filter, wash, and dry to obtain polyacrylic a...

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PUM

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Abstract

The invention discloses a preparation method of acrylic resin, which belongs to the field of high molecular copolymer preparation. The synthesis method is realized through the following steps: heat up the aqueous solution of dissolving polyvinyl alcohol and inorganic salt to 30-60°C, add a mixed solution composed of acrylate monomer and initiator, disperse into uniform beads, and heat up to 60-80°C, react at a constant temperature until the beads are shaped, then raise the temperature to 80-90°C, react at a constant temperature, filter, wash, and dry to obtain an acrylic resin. The invention uses polyvinyl alcohol as a dispersant and utilizes a method of suspension polymerization in the presence of inorganic salts to prepare acrylic resin, thereby improving the conversion rate of monomers. The resin can be used in the field of special coatings.

Description

technical field [0001] The invention relates to the field of polymer copolymer preparation, more specifically, the invention relates to a method for synthesizing an acrylic resin. Background technique [0002] Acrylic resin refers to a polymer prepared by polymerizing acrylic acid or methacrylic acid derivatives or copolymerizing them with other unsaturated monomers. Acrylic resin has the characteristics of good gloss and color retention, UV resistance, water and solvent resistance, and weather resistance. In application, it has the advantages of fast drying, convenient construction, no discoloration, no yellowing after high temperature baking, and easy construction. Ink and paint products made from its main resin or auxiliary resin can be widely used in paper, plastics, automobiles, electrical appliances, construction and other fields. [0003] Acrylic resins are mainly classified into bulk polymerization, emulsion polymerization and suspension polymerization according to ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08F220/14C08F220/18C08F220/20C08F2/20
CPCC08F2/20C08F220/14C08F220/18C08F220/1804C08F220/20
Inventor 周文欣胡志刚张卫红王建余立明侯静魏红宇
Owner HENAN ACADEMY OF SCI CHEM RES INST CO LTD
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