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Uv-curable composition for hard-coat painting

A curing type, ultraviolet technology, applied in polyurea/polyurethane coatings, coatings, lighting and heating equipment, etc., can solve problems such as discoloration and coating film peeling

Active Publication Date: 2015-03-18
HYUNDAI MOBIS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, benzotriazole-modified aliphatic urethane acrylate was irradiated at 3,500kJ / m in accelerated weather resistance evaluation (SAE J1960) 2 The phenomenon of peeling off and discoloration of the coating film occurred when the energy was applied

Method used

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  • Uv-curable composition for hard-coat painting
  • Uv-curable composition for hard-coat painting
  • Uv-curable composition for hard-coat painting

Examples

Experimental program
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Embodiment 1～4 and comparative example 1～4

[0078] Using the following Table 1 as the basis for the components and contents, an ultraviolet curable hard coat composition was prepared.

[0079] (A) 6-functional aliphatic urethane acrylate oligomer: DM87A of Double Bond Chemical, which is a reactant of isophorone diisocyanate and pentaerythritol triacrylate with a molecular weight of about 1,600 g / mol, was used.

[0080] (B) Benzotriazole-modified aliphatic urethane acrylate oligomer: RUVA-93 from Otsuka Corporation was used.

[0081] (C) Polycarbonate-modified aliphatic urethane acrylate: UA5095 of Miwon Corporation was used.

[0082] (D) Photopolymerization initiator: CP-4 of Miwon Corporation was used.

[0083] (E-1) 2 functional acrylate monomer: 1, 6- hexanediol diacrylate was used.

[0084] (E-2) Trifunctional acrylate monomer: trimethylolpropane triacrylate was used.

[0085] (E-3) 6 functional acrylate monomer: dipentaerythritol hexaacrylate (DIPENTAERYTHRITOL HEXAACRYLATE, DPHA) was used.

[0086] (F) Ultravi...

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Abstract

A UV-curable composition for hard-coat painting of the invention, comprises (A) 100 parts by weight of aliphatic urethane acrylate oligomer comprising 6 or more polymerizable functional groups, (B) 5 to 20 parts by weight of benzotriazole-modified urethane acrylate oligomer, (C) 5 to 15 parts by weight of polycarbonate-modified urethane acrylate oligomer, and (D) 1 to 10 parts by weight of photopolymerization initiator agent.

Description

[0001] References to related patents [0002] This patent application requests to incorporate all the disclosure content of the Korean patent application No. 10-2013-0099307, the filing date is August 21, 2013, and the receiving office is the Korean Intellectual Property Office into this application as a reference. technical field [0003] The present invention relates to an ultraviolet curable hard coat coating composition. More specifically, it is suitable for the surface of plastic substrates such as polycarbonate, and has excellent chipping resistance, reliability, adhesion, hardness, wear resistance and impact resistance, and can be applied to automobile front lights. UV-curable hard-coat coating composition for hard-coats for lamp lenses, etc. Background technique [0004] Car headlights (headlights) are lights that illuminate the front in order to enable cars to drive safely at night. In the conventional automotive headlight market, glass with excellent transparency...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D175/14C09D7/12G02B3/00F21V5/04F21W101/10
CPCC08L2205/025C08L2205/03C09D175/14C09D7/63F21V5/04F21W2102/00G02B3/00C08L75/14C08K5/103B60Q1/04C08J2300/00C08J2475/14C08K5/11C08K5/3472C08L69/00C09D7/48C09D7/65C08J7/046
Inventor 李祯焕全勇金亿金长旭朴圭烨金康洙柳晳化
Owner HYUNDAI MOBIS CO LTD