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Yellowing-resistant UV-LED curable coating material composition

A UV-LED and composition technology, applied in polyester coatings, polyether coatings, epoxy resin coatings, etc., can solve the problems of single wavelength of curing light source, application limitation, and low surface strength of paint film

Pending Publication Date: 2022-01-18
GUANGDONG HUARUN PAINT CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Conventional UV-LED curable coatings have a single wavelength of curing light source (usually triggered by a single wavelength of 395nm), and the oxygen inhibition is serious when the coating is thin, which is characterized by poor surface dryness of the coating and low surface strength of the paint film. Can be used as a primer, which greatly limits the application of UV-LED curable coatings
Although thioxanthone-based photoinitiators are of great help to the surface drying of 395nm wavelength curing, the yellowing of the paint film is serious, and the hard and brittle adhesion of the paint film after curing is reduced, and the application is also greatly limited

Method used

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  • Yellowing-resistant UV-LED curable coating material composition
  • Yellowing-resistant UV-LED curable coating material composition
  • Yellowing-resistant UV-LED curable coating material composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0105] Test Methods

[0106] Attachment

[0107] Adhesion test performed to evaluate the coated substrate for coating adhesion. Adhesion tests were conducted according to the test method ASTMD 3359- B. Adhesion is generally rated on a scale 0-5B where 5B indicates optimal adhesion.

[0108] Gloss

[0109] The test used to measure the gloss of the cured coating. According to ASTM D523 using a small Kongguang Ze Sheen Instrument 60 ° gloss was evaluated.

[0110] Characterization of yellow resistance

[0111] BYK white test card in paper coating, blade coating may be UV-LED-curable coating composition, coating amount of 10-12g / m 2 ; At 395nm LED-UV light curing, curing energy 1000-1500mJ / cm 2 ; After curing is complete, and is calculated using the color difference meter test (the following formula) with the original color value of a white area coated paper jam.

[0112] △ E = [(△ L *) 2 + (△ a *) 2 + (△ b *) 2 ] 1 / 2

[0113]Among them, ΔL = l sample -L standard (difference ...

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Abstract

The present invention relates to a yellowing-resistant UV-LED curable coating material composition, which comprises: (a) an amine modified polyether acrylate; (b) a (meth) acrylate polymer different from (a); (c) a polyfunctional thiol compound; and (d) an acylphosphine oxide as a photoinitiator. The present invention relates to a product, which comprises a base material partially or entirely coated with the UV-LED curable coating material composition.

Description

Technical field [0001] The present invention relates to a UV-LED-curable coating composition, said article comprising further relates to UV-LED-curable coating composition. Background technique [0002] UV curing technology (UV) with environmental protection, energy saving, fast curing, curing controllability and other advantages, the past 20 years has made rapid development, widely used in coatings, inks, adhesives, microelectronics materials. Compared with conventional high-energy UV curing technology mercury lamp, UV-LED having a low energy consumption, easy portability and long life advantages, which UV-LED curing recently has attracted attention. [0003] Conventional UV-LED may be curable coating the curing single wavelength light source (typically a single initiator is 395nm wavelength), when the thin coating severe oxygen inhibition, expressed as a dry coating difference table, the film surface strength low, typically only It can be used as a primer, which greatly limits ...

Claims

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Application Information

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IPC IPC(8): C09D167/06C09D171/00C09D7/63
CPCC09D167/06C09D7/63C08L71/00C08K5/37C09D171/00C09D163/10C09D175/16C09D5/00C08K5/548C08K5/5397C09D4/06C08F290/141C08F290/142C09D133/10
Inventor 刘一江王琼波杨伟
Owner GUANGDONG HUARUN PAINT CO LTD
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