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Compositions, coatings and coating films for forming self-healing coatings

A composition and self-repairing technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve the loss of self-repairing properties, coating mechanical properties such as hardness, wear resistance or insufficient coating strength, coating damage, etc. problems, achieve high hardness, ensure toughness, and improve performance

Active Publication Date: 2019-07-12
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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  • Compositions, coatings and coating films for forming self-healing coatings
  • Compositions, coatings and coating films for forming self-healing coatings
  • Compositions, coatings and coating films for forming self-healing coatings

Examples

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 with self-healing properties, a coating film prepared from the composition, a coating film comprising the coating film, and a household appliance and a display device comprising the coating film, the The composition comprises: a reversible copolymer comprising a (thio)urea functional group comprising one or more hindered (thio)urea linkages and a (meth)acrylate or vinylic functional group attached to said (thio)urea functional group. valent compounds; photoinitiators; and organic solvents.

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 Patents(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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