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Low-yellowing UV varnish

A low-yellow, monomer-based technology, applied in the field of UV varnishes, to achieve good economic and social benefits

Inactive Publication Date: 2007-10-31
MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, compared with traditional paints, the easy yellowing of UV varnishes is an important defect. UV varnishes with low yellowing can make the product look more beautiful. Therefore, it is of great significance to solve the problem of yellow edges in UV systems

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] According to the following component formula, all the raw materials are mixed and evenly dissolved:

[0026] HDDA 20

[0027] DPHA 15

[0028] Tetrafunctional aliphatic PUA 30

[0029] Trifunctional aliphatic PUA 30

[0030] Epoxy acrylate 20

[0031] Irgacure184 4

[0032] EFKA3777 or EFKA3034 0.2

[0033] OB 0.1

[0034] Butyl acetate 25

[0035] Isopropyl alcohol 25

[0036] Then spray it on the plastic substrate, using a 1KW high-pressure mercury lamp to 80W.cm -1 The illuminance is irradiated with ultraviolet light to cure, and then the color difference meter is used to compare the color difference of the substrate before and after spraying. The results obtained are: ΔL=-0.687; Δa=-0.113; Δb=0.108; ΔE=0.705. The coating film was tested for hardness and adhesion, and the results showed that the pencil hardness was 1H and there was no mark, and there was no single division and peeling off.

Embodiment 2

[0038] According to the following component formula, all the raw materials are mixed and evenly dissolved:

[0039] HDDA 20

[0040] DPHA 20

[0041] Tetrafunctional aliphatic PUA 30

[0042] Trifunctional aliphatic PUA 25

[0043] Epoxy acrylate 20

[0044] Irgacure184 4

[0045] EFKA3777 or EFKA3034 0.2

[0046] OB 0.1

[0047] Butyl acetate 25

[0048] Isopropyl alcohol 25

[0049] Then spray it on the plastic substrate, using a 1KW high-pressure mercury lamp to 80W.cm -1 The illuminance is irradiated with ultraviolet light to cure, and then the color difference of the substrate before and after spraying is compared with a color difference meter. The obtained results are: ΔL=-0.669; Δa=-0.107; Δb=0.103; ΔE=0.685. The coating film was tested for hardness and adhesion, and the results showed that the pencil hardness was 1H and there was no mark, and there was no single division and peeling off.

Embodiment 3

[0051] According to the following component formula, all the raw materials are mixed and evenly dissolved:

[0052] HDDA 20

[0053] DPHA 20

[0054] Tetrafunctional aliphatic PUA 30

[0055] Trifunctional aliphatic PUA 20

[0056] Epoxy acrylate 20

[0057] Irgacure184 4

[0058] EFKA3777 or EFKA3034 0.2

[0059] OB 0.1

[0060] Butyl acetate 25

[0061] Isopropyl alcohol 25

[0062] Then spray it on the plastic substrate, using a 1KW high-pressure mercury lamp to 80W.cm -1 The illuminance is irradiated with ultraviolet light to cure, and then the color difference meter is used to compare the color difference before and after spraying of the substrate. The obtained results are: ΔL=-0.695; Δa=-0.133; Δb=0.115; ΔE=0.717. The coating film was tested for hardness and adhesion, and the results showed that the pencil hardness was 1H and there was no mark, and there was no single division and peeling off.

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PUM

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Abstract

The invention discloses an UV varnish with low yellowed, which comprises the following steps: allocating 35-55 wt monomer, 55-90 wt photosensitive resin, 4-7 wt light trigger, 0. 1-0. 3 wt aids, 0. 05-0. 5 wt fluorescer and 50-80 wt dissolvent; getting the product. This paint mainly be used to plastic-soled material, which possesses good economic benefit and social benefit.

Description

Technical field [0001] The invention relates to a UV coating, in particular to a UV varnish. Background technique [0002] UV coating is a coating that is hardened by chemical action produced by ultraviolet radiation. Its main components are composed of photosensitive resin, reactive diluent, photoinitiator and auxiliary. The coating uses high-energy ultraviolet light as a curing energy source. The photoinitiator absorbs ultraviolet light energy to form free radicals, triggers the photosensitive resin and reactive diluent molecules, and then a chain polymerization reaction occurs, so that the coating film can be cured. This curing method gives UV coatings many advantages: fast curing and glazing speed, energy saving, normal temperature curing, superior performance and environmental protection, the film layer has high brightness, the film surface is strong and heat-resistant after drying, and the surface of the substrate can be bright. , Smooth and good refraction effect. Therefor...

Claims

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Application Information

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IPC IPC(8): C09D4/06
Inventor 邓燕马迎娜袁春来
Owner MITAC PRECISION TECH CO LTD SHUNDE DISTRICT FOSHAN CITY