Film-coated UV (ultraviolet) white and bright finish coat with high resistance to yellowing and preparation method thereof

A technology of anti-yellowing and film coating, which is applied in the field of coatings, can solve the problems that the coating cannot be completely cured, the coating affects the aesthetics of the product, and the initiator is unstable, so as to save resources, solve the problem of deep curing, and improve production efficiency. high effect

Active Publication Date: 2014-04-23
AODA KOALA PAINT HUIZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The second is the instability of the initiator itself. Some photoinitiators will produce some by-products when they are decomposed by ultraviolet radiation to generate free radicals. The by-products have a quinone structure or a strong rigid conjugated plane, which is easy to absorb Band of sunlight, so that the coating appears yellow
The yellowing of the coating seriously affects the aesthetics of the product
Moreover, in the existing UV paint, due to the defects of the lighting equipment, the coating often cannot be fully cured.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] A kind of high anti-yellowing coating UV white bright finish paint, by weight percentage:

[0041] Hexafunctional polyurethane acrylic acid 35.8%; difunctional polyurethane acrylic acid 30%; pentaerythritol triacrylate 10%; titanium white paste 20%; EFKA2721 0.2%; TEGO432 0.5%; ; (2,4,6-trimethylbenzoyl) diphenylphosphine oxide 1%; phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide 0.5%.

[0042] Titanium dioxide by weight percentage:

[0043] Titanium dioxide 60%, six-functional polyurethane acrylic acid 19%, pentaerythritol triacrylate 19%, BYK163 2%.

Embodiment 2

[0045] A kind of high anti-yellowing coating UV white bright finish paint, by weight percentage:

[0046] Hexafunctional polyurethane acrylic acid 40.8%; difunctional polyurethane acrylic acid 20%; pentaerythritol triacrylate 15%; titanium white paste 20%; EFKA2721 0.2%; TEGO432 0.5%; ; (2,4,6-trimethylbenzoyl) diphenylphosphine oxide 1%; phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide 0.5%.

[0047] Titanium dioxide by weight percentage:

[0048] Titanium dioxide 55%, six-functional polyurethane acrylic acid 24%, pentaerythritol triacrylate 19%, BYK163 2%.

Embodiment 3

[0050] A kind of high anti-yellowing coating UV white bright finish paint, by weight percentage:

[0051] Hexafunctional polyurethane acrylic acid 30.8%; difunctional polyurethane acrylic acid 30%; pentaerythritol triacrylate 15%; titanium white paste 20%; EFKA2721 0.2%; TEGO432 0.5%; ; (2,4,6-trimethylbenzoyl) diphenylphosphine oxide 1%; phenyl bis (2,4,6-trimethylbenzoyl) phosphine oxide 0.5%.

[0052] Titanium dioxide by weight percentage:

[0053] Titanium dioxide 55%, six-functional polyurethane acrylic acid 19%, pentaerythritol triacrylate 24%, BYK163 2%.

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Abstract

The invention relates to the field of coatings and specifically relates to a film-coated UV (ultraviolet) white and bright finish coat with high resistance to yellowing and a preparation method thereof. The film-coated UV white and bright finish coat with the high resistance to yellowing comprises the following components in percentage by weight: 20-40% of hexa-functional urethane acrylate, 30-50% of difunctional urethane acrylate, 10-20% of monomer, 10-20% of titanium dioxide slurry, 3-6% of photoinitiator and 0.2-2% of functional additives, wherein the titanium dioxide slurry comprises the following components in percentage by weight: 50-70% of titanium dioxide, 10-25% of hexa-functional urethane acrylate, 10-25% of monomer and 0.5-2% of wetting dispersant. The film-coated UV white and bright finish coat with the high resistance to yellowing, provided by the invention, can solve the difficult problem of deep curing of a light-cured coating colored system and the fundamental problem of resistance to yellowing of a white system.

Description

[0001] technical field [0002] The invention relates to the field of coatings, in particular to a high-yellowing-resistant film-coated UV white bright topcoat and a preparation method thereof. [0003] Background technique [0004] Traditional oil-based paints have been widely used on wood, plastic, paper, metal and other substrates. In formula design, traditional coatings contain a large amount of solvents, which will produce toxic and irritating organic compounds during use, which are very harmful to people's health and fail to meet the environmental protection requirements that people are increasingly pursuing. With the continuous development of society and the continuous improvement of people's living standards, people's requirements for civil coatings are also getting higher and higher. More importantly, they pay close attention to their own health, such as children's toy paints, children's furniture paints, etc., which are required not to contain harmful substances. ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12
Inventor 李磊陈日云
Owner AODA KOALA PAINT HUIZHOU
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