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Polyester/epoxy mixed powder coating flatting agent and application thereof

A technology of powder coating and matting agent, which is applied to the matting of polyester/epoxy hybrid powder coatings. Oxygen, limited sources of raw materials, etc., to solve the yellowing caused by temperature or light, excellent extinction performance, and a wide range of raw materials

Pending Publication Date: 2019-04-05
梧州市泽和高分子材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to overcome the deficiencies in the prior art, one of the purposes of the present invention is to provide a polyester / epoxy hybrid powder coating matting agent to solve the problem that the coating film in the existing matting agent mentioned above is easily affected by baking temperature, ordinary sunlight intensity, etc. Problems such as yellowing caused by (indirect sunlight), large consumption of epoxy in powder coatings, limited sources of raw materials, and poor powder storage stability

Method used

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  • Polyester/epoxy mixed powder coating flatting agent and application thereof
  • Polyester/epoxy mixed powder coating flatting agent and application thereof
  • Polyester/epoxy mixed powder coating flatting agent and application thereof

Examples

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Effect test

Embodiment 1

[0044] Preparation of carboxylic acrylic resin: 10Kg acrylic acid monomer, 40Kg methacrylic acid monomer, 22Kg isobornyl methacrylate, 10Kg styrene, 15Kg mercaptoethanol and 5Kg benzoyl peroxide were uniformly mixed to prepare a mixed base material. Inject toluene into the reaction kettle, and start to add the above-prepared mixed base material dropwise when the toluene is refluxed. The reaction temperature is 150°C. After reflux reaction for 3 hours, the solvent is removed in vacuum and cooled to obtain carboxy acrylic resin. The obtained carboxylated acrylic resin was passed through a 160-mesh sieve, and its acid value was determined to be 300 mgKOH / g, its softening point was 90° C., and its glass transition temperature was 45° C.

[0045] Preparation of epoxy-based acrylic resin: Mix 10Kg glycidyl methacrylate, 35Kg methyl methacrylate monomer, 45Kg styrene, 10Kg mercaptoethanol, 3Kg benzoyl peroxide and 2Kg tert-butyl peroxybenzoate , to prepare a mixed bottom material. I...

Embodiment 2

[0048] Preparation of carboxylic acrylic resin: mix 25Kg acrylic acid monomer, 30Kg methacrylic acid monomer, 30Kg lauryl methacrylate, 25Kg styrene, 13Kg thioglycolic acid, 2Kg benzoyl peroxide and 1Kg tert-butyl peroxybenzoate , to prepare a mixed bottom material. Inject xylene into the reaction kettle, and start adding the above-prepared mixed base material dropwise when the xylene is heated to reflux. The reaction temperature is 135°C. After 3.5 hours of reflux reaction, the solvent is removed in vacuum and cooled to obtain carboxy acrylic resin. The obtained carboxylated acrylic resin was passed through a 160-mesh sieve, and its acid value was determined to be 150 mgKOH / g, its softening point was 105° C., and its glass transition temperature was 56° C.

[0049] Preparation of epoxy-based acrylic resin: 35Kg glycidyl methacrylate, 20Kg lauryl methacrylate monomer, 25Kg styrene, 15Kg mercaptoacetic acid and 4Kg benzoyl peroxide were uniformly mixed to prepare a mixed base m...

Embodiment 3

[0052] Preparation of carboxylic acrylic resin: Mix 20Kg acrylic acid monomer, 22Kg methacrylic acid monomer, 10Kg butyl acrylate, 20Kg styrene, 10Kg 3-mercaptopropionate isooctyl and 6Kg tert-butyl peroxybenzoate evenly to prepare Mix base. Inject toluene into the reaction kettle, and start to add the above-prepared mixed base material dropwise when the toluene is refluxed. The reaction temperature is 130°C. After 4 hours of reflux reaction, the solvent is removed in vacuum and cooled to obtain carboxy acrylic resin. The obtained carboxylated acrylic resin was passed through a 160-mesh sieve, and its acid value was determined to be 180 mgKOH / g, its softening point was 135° C., and its glass transition temperature was 65° C.

[0053] Preparation of epoxy-based acrylic resin: 25Kg glycidyl methacrylate, 25Kg octadecyl methacrylate monomer, 32Kg styrene, 4Kg mercaptoethanol, 8Kg mercaptoacetic acid and 3Kg tert-butyl peroxybenzoate were mixed uniformly to prepare Have to mix ba...

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Abstract

The invention discloses a polyester / epoxy mixed powder coating flatting agent which comprises, in weight percent, 15-95% of acrylic resin and 5-85% of metal organic compounds. The acrylic resin includes carboxyl acrylic resin and epoxy acrylic resin, and the metal organic compounds comprise at least one of benzothiazole thiol zinc salt, long-chain fatty acid metal salt, lauric acid metal salt andpalmitic acid metal salt. The invention further discloses an application of the polyester / epoxy mixed powder coating flatting agent to polyester / epoxy mixed powder coating flatting. The polyester / epoxy mixed powder coating flatting agent solves the problem that an original flatting agent is easily yellowed, and a powder coating prepared from the flatting agent is smooth in coating film and good inmechanical property and powder storage stability.

Description

technical field [0001] The invention relates to the technical field of powder coating production and processing, in particular to a polyester / epoxy mixed powder coating matting agent and the use of the polyester / epoxy mixed powder coating matting agent on polyester / epoxy mixed powder coating matting Applications. Background technique [0002] Human activities have exacerbated environmental pollution, especially fossil energy and volatile organic compounds (VOC) produced by various manufacturing activities have made environmental pressure increasingly severe. Reducing VOC content in the air and reducing energy consumption are increasingly urgent issues in the coatings industry . Water-based coatings, powder coatings, light-curing coatings and high-solid coatings, as the four new environmentally friendly coatings, will become the direction of future coating development. Among them, powder coatings are popular and widely used for their 3E (Environmental, Economical, Efficienc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D7/65C09D7/63C09D5/03C09D167/00C09D163/00C08F220/06C08F220/18C08F212/08C08F220/14C08F220/32
CPCC09D163/00C09D167/00C08F212/08C08F220/06C08F220/18C08F220/32C09D5/033C08F220/1812C08F220/325C08F220/1811C08F220/1818C08F220/14
Inventor 唐懿
Owner 梧州市泽和高分子材料有限公司
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