UV curable coating used for IML, its preparation method and application

A technology of light-curing coatings and photoinitiators, applied in polyester coatings, polyurea/polyurethane coatings, coatings, etc., to reduce production costs, excellent steel wool scratch resistance and stain resistance, and reduce raw material costs Effect

Active Publication Date: 2013-10-02
GUANGZHOU HUMAN CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional plastic processing technology has gradually been unable to meet the needs of the new era. With the rise of light, thin and short consumer electronics products and environmental awareness, the many advantages of IML technology make it suitable for 3C, home appliances, LOGO nameplates and automobiles Parts and other plastic products, especially the currently popular mobile phone casings and various instrument panels

Method used

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  • UV curable coating used for IML, its preparation method and application
  • UV curable coating used for IML, its preparation method and application

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] Preparation of UV curable coatings for IML:

[0033] (1) Combine 4g monofunctional acrylate reactive diluent (Sartomer-SR506NS), 4g hexafunctional acrylate reactive diluent (Eternal-EM265), 0.1g leveling agent (BYK-UV3500) and 70g organic solvent (35g) Butyl acetate and 35g methyl ethyl ketone) mix well;

[0034] (2) Add 10g of aliphatic urethane acrylate (Basf-UA9050) and 10g of hyperbranched polyester acrylate (Sartomer-CN2303) to the mixture obtained in step (1), stir and disperse uniformly;

[0035] (3) Add 1g of silica nanoparticle dispersion (NANOBYK-3650) and 1g of photoinitiator (Irgacure 127) to the mixture obtained in step (2), disperse uniformly, filter, and obtain UV light curable coating for IML .

Embodiment 2

[0037] Preparation of UV curable coatings for IML:

[0038] (1) Combine 10g monofunctional acrylate reactive diluent (Sartomer-SR423NS), 5g tetrafunctional acrylate reactive diluent (Eternal-EM2411), 1g leveling agent (BYK-371) and 50g organic solvent (20g acetic acid) Ethyl acetate, 20g methyl isobutyl ketone and 10g cyclohexanone) are mixed uniformly;

[0039] (2) Add 20g aliphatic urethane acrylate (Cytec-EB8212) and 10g hyperbranched polyester acrylate (Eternal-6361-100) to the mixture obtained in step (1), stir and disperse uniformly;

[0040] (3) Add 2g of alumina nanoparticle dispersion (NANOBYK-3610) and 2g of photoinitiator (Darocur 1173) to the mixture obtained in step (2), disperse uniformly, and filter to obtain a UV curable coating for IML.

Embodiment 3

[0042] Preparation of UV light-curable coatings for IML:

[0043] (1) Combine 4g bifunctional acrylate reactive diluent (Sartomer-SR238NS), 1g hexafunctional acrylate reactive diluent (Eternal-EM267), 0.3g leveling agent (BYK-UV3500) and 60g organic solvent (30g) Butyl acetate and 30g methyl isobutyl ketone) are mixed uniformly;

[0044] (2) Add 17g aliphatic urethane acrylate (Sartomer-CN9013) and 15g hyperbranched polyester acrylate (Eternal-6362-100) to the mixture obtained in step (1), stir and disperse uniformly;

[0045] (3) Add 1.5g of alumina nanoparticle dispersion (NANOBYK-3651) and 1.5g of photoinitiator (Darocur MBF) to the mixture obtained in step (2), disperse uniformly, filter, and obtain UV curing for IML coating.

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Abstract

The invention discloses a UV curable coating used for IML, its preparation method and application. The UV curable coating used for IML comprises: 10-20 parts of aliphatic polyurethane acrylate, 5-15 parts of hyperbranched polyester acrylate, 5-15 parts of an active diluent, 0.1-1 part of a leveling agent, 0.5-2 parts of nanoparticles, 1-2 parts of a photoinitiator, and 50-70 parts of an organic solvent. The preparation method includes: mixing the reactive diluent, the leveling agent and the organic solvent evenly; then adding the aliphatic polyurethane acrylate and the hyperbranched polyester acrylate, mixing them uniformly, then adding the nanoparticles and the photoinitiator, and mixing them uniformly, thus obtaining the UV curable coating used for IML. The UV curable coating used for IML can be used for preparing hard films for IML, and can effectively reduce the cost. The obtained hard films for IML have high hardness, excellent resistance to steel wool scraping and stain resistance.

Description

Technical field [0001] The invention relates to a coating, in particular to a UV light curing coating for IML, and a preparation method and application thereof. Background technique [0002] In-mold insert injection molding (IML) means that the printed hardened film is first formed by a molding machine, then cut and trimmed, and then placed in the injection mold to inject plastic particles, and the plastic and hardened film are bonded together and cured by an adhesive. forming. The remarkable feature of this process is: the surface is a layer of hardened transparent film, the middle is the printed pattern layer, and the back is the plastic layer. The surface hardened film has outstanding abrasion resistance, and the printing layer is sandwiched in the middle, which can prevent the surface of the product from being scratched, and can keep the color bright and not easy to fade for a long time. [0003] From the perspective of use, the cured film for IML requires high hardness and s...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D167/06C09D7/12
Inventor 乔立根路芳陈勇申超
Owner GUANGZHOU HUMAN CHEM
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