Top-coated coating of water-based UV-light curing vacuum coating

A vacuum coating and ultraviolet light technology, applied in the field of coatings, can solve the problems of weak adhesion, high viscosity of coatings, inconvenient use, etc., and achieve the effect of wide application range, good wear resistance and strong adhesion

Inactive Publication Date: 2010-07-28
GUANGDONG ZHICHENG CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In UV-curable coating coating technology, polyurethane acrylate is mainly used as primer, and its function is mainly to provide good flexibility and adhesion of the cured film. In order to improve hardness, fast curing performance and good adhesion performance, it is usually added Epoxy acrylate; due to the vacuum volatilization of monofunctional monomers and the impossibility of complete conversion in the system, the amount of monofunctional reactive diluent in the formula should not be too high, which will lead to excessive viscosity of the coating and inconvenient use
People have also done a lot of research on this, such as: Chinese patent application number: 200810026928.1, the name of the invention is: water-soluble vacuum coating coating, announced that materials such as vegetable oil and its fatty acid, polyhydric alcohol, phenolic resin go through alcoholysis, polycondensation, It is prepared by addition and urethane; Chinese patent application number: 200710039.1, and the name of the invention is: ultraviolet curing vacuum coating coating, which is prepared from polyurethane acrylate resin, leveling agent, and acrylate monomer; Chinese patent number : ZL01130164.3, the name of the invention is: vacuum coating coating, which is prepared by mixing vegetable oil and its fatty acids, polyols, phenolic resin, benzofuran resin, modified chlorinated polyolefin, etc.; In other words, there are still shortcomings such as low surface cleanliness, poor leveling and weak adhesion.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0041] A water-based UV-curable vacuum coating top coating; including the following raw materials in weight percentage: 20% modified polyurethane acrylic acid, 5% 2-hydroxyl-2-methyl-1-phenyl-1-p-hydroxyethyl ether Phenylacetone, 1% silicone, 5% glycol ether, 64% water;

[0042] Wherein, the modified polyurethane acrylic acid is synthesized by 20% polyester polyol, 25% aliphatic isocyanate, 15% monomer containing both hydroxyl and carboxyl functional groups, 40% hydroxypropyl ester, and 0.05% tin;

[0043] Modified polyurethane acrylic synthetic steps are as follows:

[0044] Step 1. Put the polyester polyol, aliphatic isocyanate, monomers containing hydroxyl and carboxyl functional groups, and tin in the above-mentioned proportion in the reactor, mix and stir;

[0045] Step 2, flush nitrogen into the reactor until the original air in the reactor is discharged;

[0046] Step 3, heating up to 50°C, and keeping the temperature for 6 hours to prepare a viscous, transparent NCO-...

Embodiment 2

[0054] A water-based UV-curable vacuum coating top coating; comprising the following raw materials in percentage by weight: 25% modified polyurethane acrylic acid, 15% 2-hydroxyl-2-methyl-1-phenyl-1-p-hydroxyethyl ether Phenylacetone, 2% organosilicon, and organofluorine are composed of 1:1 by weight percentage, 8% propylene glycol ether, 50% water;

[0055] Wherein, the modified polyurethane acrylic acid is synthesized from 30% polyether polyol, 30% aliphatic isocyanate, 10% monomers containing both hydroxyl and carboxyl functional groups, 30% hydroxyethyl ester, and 0.2% zinc;

[0056] Modified polyurethane acrylic synthetic steps are as follows:

[0057] Step 1. Put polyether polyols, aliphatic isocyanates, monomers containing hydroxyl and carboxyl functional groups, and zinc in the above-mentioned proportions in the reaction vessel, mix and stir evenly;

[0058] Step 2, flush nitrogen into the reactor until the original air in the reactor is discharged;

[0059] Step 3, ...

Embodiment 3

[0067] A water-based UV-curable vacuum coating top coating; including the following raw materials in weight percentage: 40% modified polyurethane acrylic acid, 5% 2-hydroxyl-2-methyl-1-phenyl-1-p-hydroxyethyl ether Phenylacetone, 1% Silicone, 10% Propylene Glycol Ether, 44% Water;

[0068] Wherein, the modified polyurethane acrylic acid is composed of 40% polyester polyol containing carboxyl groups, 30% aliphatic isocyanate, 10% monomers containing both hydroxyl and carboxyl functional groups, 20% methylol acrylate, 0.5% bismuth synthesis;

[0069] Modified polyurethane acrylic synthetic steps are as follows:

[0070] Step 1. Put polyester polyols containing carboxyl groups, aliphatic isocyanate, monomers containing hydroxyl and carboxyl functional groups, and bismuth in the above-mentioned proportion in the reactor, mix and stir evenly;

[0071] Step 2, flush nitrogen into the reactor until the original air in the reactor is discharged;

[0072] Step 3, heating up to 70°C,...

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PUM

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Abstract

The invention relates to the technology field of coating, in particular to a top-coated coating of water-based UV-light curing vacuum coating; the invention is composed of modified polyurethane acrylic acid, an evocating agent, a surface additive, a latent solvent and water, wherein the modified polyurethane acrylic acid is obtained by synthesis of high molecular polymer, chain extender, an emulsifying agent, a light curing agent, a catalyst and organic amine; the invention not only has high hardness and good wear resistance, but also has strong adhesive force to the metal, particularly has the water solubility and the oil solubility simultaneously, has wide application range, and conforms to the EU ROHS standard.

Description

Technical field: [0001] The invention relates to the technical field of coatings, in particular to a water-based ultraviolet light curing vacuum coating top coating. Background technique: [0002] In UV-curable coating coating technology, polyurethane acrylate is mainly used as primer, and its function is mainly to provide good flexibility and adhesion of the cured film. In order to improve hardness, fast curing performance and good adhesion performance, it is usually added Epoxy acrylate; due to the vacuum volatilization of monofunctional monomers and the impossibility of complete conversion in the system, the amount of monofunctional reactive diluent in the formula should not be too high, which will lead to excessive viscosity of the coating and inconvenient use . People have also done a lot of research on this, such as: Chinese patent application number: 200810026928.1, the name of the invention is: water-soluble vacuum coating coating, announced that materials such as v...

Claims

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Application Information

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IPC IPC(8): C09D175/04C08G18/67C23C14/24
Inventor 李志民
Owner GUANGDONG ZHICHENG CHEM
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