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

A technology of vacuum coating and ultraviolet light, which is applied in the field of coatings, can solve the problems of high viscosity, weak adhesion, and poor leveling of coatings, and achieve the effects of strong adhesion, wide application range, and good leveling

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 the UV-curable coating coating technology, the polymer ester is mainly used as the primer, and its function is mainly to provide good flexibility and adhesion of the cured film. In order to improve the hardness, fast curing performance and good adhesion performance, usually also Epoxy acrylate will be added; due to the vacuum volatilization of monofunctional monomers and the impossibility of complete conversion in the system, the amount of monofunctional reactive diluents in the formula should not be too high, which will lead to excessive viscosity of the coating and use inconvenient
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 primer; 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% diisocyanate, 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. Synthesize polyester polyols, diisocyanates, monomers containing hydroxyl and carboxyl functional groups, and tin in the above-mentioned proportions in a 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-containing polyur...

Embodiment 2

[0054] A water-based UV-curable vacuum coating primer; including the following raw materials in weight percentage: 25% modified high molecular polymer, 15% 2-hydroxyl-2-methyl-1-phenyl-1-p-hydroxyethyl Ether-based 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% diisocyanate, 10% monomer 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, diisocyanates, monomers containing hydroxyl and carboxyl functional groups, and zinc in the above-mentioned proportions in the reactor, mix and stir evenly;

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

[0059] Step 3, heating up to 60°C, and holding...

Embodiment 3

[0067] A water-based UV-curable vacuum coating primer; 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 synthesized from 40% polyester polyol containing carboxyl groups, 30% diisocyanate, 10% monomers containing both hydroxyl and carboxyl functional groups, 20% methacrylate, and 0.5% bismuth;

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

[0070] Step 1. Put the polyester polyol containing carboxyl groups, diisocyanate, monomers containing hydroxyl and carboxyl functional groups, and bismuth in the above proportion in the reaction kettle, 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, and keeping the temperatur...

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PUM

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Abstract

The invention relates to the technology field of coating, in particular to an under-coated coating of water-based UV-light curing vacuum coating; the invention comprises modified polyurethane acrylic acid, an evocating agent, a surface additive, a latent solvent and water, wherein the modified polyurethane acrylic acid is obtained through synthesis of high molecular polymer, chain extender, an emulsifying agent, alight curing agent, a catalyst and organic amine; the invention not only has high surface cleanness and good leveling property, but also has strong adhesive force, 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 primer. Background technique: [0002] In the UV-curable coating coating technology, the polymer ester is mainly used as the primer, and its function is mainly to provide good flexibility and adhesion of the cured film. In order to improve the hardness, fast curing performance and good adhesion performance, usually also Epoxy acrylate will be added; due to the vacuum volatilization of monofunctional monomers and the impossibility of complete conversion in the system, the amount of monofunctional reactive diluents in the formula should not be too high, which will lead to excessive viscosity of the coating and use inconvenient. 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D175/06C09D175/08C23C14/12
Inventor 李志民
Owner GUANGDONG ZHICHENG CHEM
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