A kind of preparation method and application of powdery acrylic resin

An acrylic resin, powder technology, used in powder coatings, coatings, etc., can solve the problems of secondary pollution and unsatisfactory dispersion, and achieve the effect of improving product performance, good dispersion state, and reducing the degree of agglomeration

Active Publication Date: 2020-07-28
BELIKE CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The powder coating produced by this method is excellent in decoration, weather resistance and pollution resistance, and can not add a leveling agent. In this reaction, an emulsifier and a molecular weight regulator are added, resulting in secondary pollution, and the dispersion of the product is not good. satisfactory

Method used

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  • A kind of preparation method and application of powdery acrylic resin
  • A kind of preparation method and application of powdery acrylic resin

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0017] A preparation method of powdery acrylic resin, comprising: (1) after agar, ethanol, and water are uniformly mixed according to a mass ratio of 1:20:80, heated to 100° C. to form a dispersion medium after dissolving, adding mixed monomers, and stirring Uniform; (2) After nitrogen protection, keep the temperature at 90°C, add a free radical initiator dropwise, stir evenly, and keep for 2 hours; (3) Stop stirring, and cool down to room temperature at a rate of 1°C per minute to form Gel state, dry and crush to 200 mesh.

[0018] The mixed monomers are selected from four different types of compounds including styrene, methyl methacrylate, butyl acrylate and methacrylic acid. The mass ratio of styrene, methyl methacrylate, butyl acrylate and methacrylic acid is 37:30:25:8. The free radical initiator is azobisisobutyronitrile. The mass ratio of the dispersion medium, the mixed monomer and the free radical initiator is 100:25:0.025.

[0019] The powder coating is prepared b...

Embodiment 2

[0022] A preparation method of powdery acrylic resin, comprising: (1) after agar, ethanol, and water are uniformly mixed according to a mass ratio of 1:20:80, heated to 100° C. to form a dispersion medium after dissolving, adding mixed monomers, and stirring Uniform; (2) After nitrogen protection, keep the temperature at 80°C, add the free radical initiator dropwise, stir evenly, and keep for 2 hours; (3) Stop stirring, and cool down to room temperature at a rate of 1°C per minute to form Gel state, dry and crush to 200 mesh.

[0023] The mixed monomers are selected from four different types of compounds including styrene, methyl methacrylate, butyl acrylate and methacrylic acid. The mass ratio of styrene, methyl methacrylate, butyl acrylate and methacrylic acid is 40:25:30:6. The free radical initiator is dibenzoyl peroxide. The mass ratio of the dispersion medium, the mixed monomer and the free radical initiator is 100:30:0.02.

[0024] The powder coating is prepared by m...

Embodiment 3

[0027] A preparation method of powdery acrylic resin, comprising: (1) after agar, ethanol, and water are uniformly mixed according to a mass ratio of 1:20:80, heated to 100° C. to form a dispersion medium after dissolving, adding mixed monomers, and stirring Uniform; (2) After nitrogen protection, keep the temperature at 80°C, add the free radical initiator dropwise, stir evenly, and keep for 2 hours; (3) Stop stirring, and cool down to room temperature at a rate of 1°C per minute to form Gel state, dry and crush to 200 mesh.

[0028] The mixed monomers are selected from four different types of compounds including styrene, methyl methacrylate, butyl acrylate and methacrylic acid. The mass ratio of styrene, methyl methacrylate, butyl acrylate and methacrylic acid is 35:35:20:10. The free radical initiator is azobisisobutyronitrile. The mass ratio of the dispersion medium, the mixed monomer and the free radical initiator is 100:20-30:0.02-0.03.

[0029] The powder coating is ...

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Abstract

The invention discloses a preparation method and application of powdered acrylic resin. The preparation method comprises the steps that (1) after evenly mixing agar, ethanol and water in a mass ratioof 1 to 20 to 80 to heat to 100 DEG C and dissolve, a dispersion medium is formed, mixed monomers are added to be stirred evenly; the mixed monomer is selected from four different types of compounds of styrene, methyl methacrylate, butyl acrylate and methacrylic acid; (2) after aerating nitrogen, gases are protected, the temperature is kept at 80-100 DEG C, a free radical initiator is added drop by drop and stirred evenly for 2 hours; and (3) stirring is stopped, a gel state is formed according to cooling to a room temperature at a rate of 1 DEG C per minute, dried and smashed to 200 meshes, and the powdered acrylic resin is completed.

Description

technical field [0001] The invention relates to the technical field of powdery acrylic resin preparation, in particular to a preparation method and application of powdery acrylic resin. Background technique [0002] At present, some acrylic acid powdery resins are prepared by bulk polymerization, which brings explosion hazard because the heat generated by the reaction is difficult to release in time; And finally need to carry out cumbersome solvent recovery operation. Some adopt the emulsion polymerization method, but the emulsion produced by it has too much odor and there is no advanced method for turning it into resin powder, the product quality difference is high, and it is difficult to operate. Curing agents used in existing acrylic powder coatings include epoxy resin and triglycidyl isocyanurate (TGIC). The former causes poor weather resistance of the coating, and the latter is toxic, especially in recent years, it has been found to be biologically toxic. This has un...

Claims

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Application Information

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Patent Type & AuthorityPatents(China)
IPC IPC(8): C08F212/08C08F220/14C08F220/18C08F220/06C08F2/38C09D125/14C09D133/12C09D5/03C09D7/63
CPCC08F2/38C08F212/08C08F220/14C09D5/033C09D125/14C09D133/064C08K5/20
Inventor郭向荣王海
OwnerBELIKE CHEM