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Composition for forming coating layer having self-healing characteristics, coating layer, and coating film

A self-healing, composite technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve coating damage, loss of self-healing properties, coating mechanical properties such as hardness, wear resistance or insufficient coating strength, etc. problems, to achieve the effect of improving performance, high hardness, and ensuring toughness

Active Publication Date: 2017-08-18
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, conventional self-healing coatings have a disadvantage in that mechanical properties such as hardness, abrasion resistance, or coating strength, etc.
Especially, in the case of applying the self-healing coating to the exterior of various home appliances such as refrigerators or washing machines, the coating is required to have a high level of mechanical properties, but most of the existing self-healing coatings cannot satisfy this. high mechanical properties
Therefore, when a strong external stimulus is applied to the existing coating, the coating itself will be permanently damaged or even lose its self-healing properties

Method used

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  • Composition for forming coating layer having self-healing characteristics, coating layer, and coating film
  • Composition for forming coating layer having self-healing characteristics, coating layer, and coating film
  • Composition for forming coating layer having self-healing characteristics, coating layer, and coating film

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Experimental program
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Effect test

preparation example 1

[0075] 25 g of methyl ethyl ketone and 59.23 g of urethane-based isocyanate Duranate E402-90T (Asahi Kasei) were mixed, and then stirred to make a homogeneous state. While stirring the homogeneous solution, 21.69 g of tert-butylaminoethyl methacrylate (TBAEMA) was added dropwise. After complete addition, the solution was stirred at room temperature for an additional 1 day, confirming the isocyanate peak in the IR spectrum (wavenumber ~ 2270 cm -1 )Disappeared.

preparation example 2

[0077] 25 g of methyl ethyl ketone and 48.45 g of hexamethylene diisocyanate / isophorone diisocyanate-based isocyanate Duranate MHG-80B (Asahi Kasei) were mixed, and stirred to make a homogeneous state. While stirring the homogeneous solution, 36.24 g of TBAEMA was added dropwise. After complete addition, the solution was stirred at room temperature for an additional 1 day, confirming the isocyanate peak in the IR spectrum (wavenumber ~ 2270 cm -1 )Disappeared.

preparation example 3

[0079] While stirring, 42.82 g of TBAEMA was added dropwise to 57.18 g of KBE-9007 (3-isocyanatopropyltriethoxysilane, Shin-Etsu). The solution was stirred at room temperature for an additional 1 day, and the isocyanate peak was confirmed in the IR spectrum (wavenumber ~ 2270 cm -1 )Disappeared. 1.48 g of the prepared solution was added to 98.52 g of a silica particle dispersion liquid IPA-ST (Nissan Chemical), and the solution was stirred for 3 days.

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Abstract

The present invention relates to: a composition for forming a coating layer having self-healing characteristics, containing a photoinitiator, an organic solvent, and a reversible covalent bond compound comprising a (thio)urea functional group comprising one or more sterically hindered (thio)urea bonds and a (meth)acrylate-based or vinyl-based functional group bound to the (thio)urea functional group; a coating film prepared from the composition; a coating film comprising the coating film; and an electric home appliance and a display device comprising the coating film.

Description

technical field [0001] Cross References to Related Applications [0002] This application claims Korean Patent Application No. 10-2015-0016887 filed with the Korean Intellectual Property Office on February 3, 2015 and Korean Patent Application No. 10-2016 filed with the Korean Intellectual Property Office on February 2, 2016 -0013073, the disclosures of both applications are hereby incorporated by reference in their entirety. [0003] The present invention relates to a composition for forming a self-healing coating, a coating, and a coating film, and more particularly, relates to a composition applied to the exterior of various household appliances or display devices to provide performance A composition for forming a self-healing coating, a coating, and a coating film with more improved mechanical properties and excellent self-healing properties. Background technique [0004] To protect products from damage caused by mechanical, physical and chemical influences from the o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D175/02C09D175/04
CPCC09D4/00C09D175/02C09D175/04C08K5/21C09D7/63C09D5/00
Inventor 金永锡李汉娜张影来
Owner LG CHEM LTD
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