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

A composition and performance technology, applied in coatings, polyurea/polyurethane coatings, etc., can solve permanent damage to coatings, mechanical properties of coatings such as hardness, wear resistance or insufficient coating strength, loss of self-healing properties, etc. problem, to achieve the effect of excellent mechanical properties and excellent self-healing performance

Active Publication Date: 2017-05-31
LG CHEM LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] However, in the case of a conventional coating exhibiting self-healing properties, it has a disadvantage in that the mechanical properties of the coating, such as hardness, abrasion resistance, or coating strength, etc., are insufficient due to mainly containing elastic materials.
In particular, in the case of applying a coating exhibiting self-healing properties to the exterior of various home appliances such as refrigerators or washing machines, the mechanical properties of the coating are required at a high level, but in most cases, have Conventional self-healing coatings cannot meet this high mechanical performance
Therefore, when a strong external stimulus is applied to the existing coating, there are many cases where the coating itself is permanently damaged, and self-healing properties are also lost

Method used

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

Examples

Experimental program
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Effect test

preparation Embodiment 1

[0071] Preparation Example 1: Preparation of Polyethylene Glycol Modified Multifunctional Urethane (Meth) Acrylic Adhesive

[0072] HDI-based trimer DN980S produced by Aekyung Chemical was used as a trifunctional or higher polyvalent isocyanate-based compound, and polyethylene glycols having different number-average molecular weights by including polyethylene glycol repeating units with different repeating numbers were used respectively Monoacrylate (Mn=300) and polyethylene glycol monoacrylate (Mn=500) were used as polyethylene glycol-modified (meth)acrylate compounds.

[0073] 40g of polyvalent isocyanate compounds, 30g of polyethylene glycol monoacrylate (Mn=300) and 30g of polyethylene glycol monoacrylate (Mn=500) and 0.1g of DBTDL (dibutyltin dilaurate) It was mixed with 200 g of methyl ethyl ketone, and the mixture was stirred at 60° C. for about 5 hours to perform a urethanization reaction.

[0074] By completing the urethanization reaction, the polyethylene glycol-mod...

preparation Embodiment 2

[0075] Preparation Example 2: Preparation of Polypropylene Glycol Modified Multifunctional Urethane (Meth) Acrylic Adhesive

[0076] HDI-based trimer DN980S produced by Aekyung Chemical was used as a polyvalent isocyanate-based compound with more than three functions, and polypropylene glycol monoacrylates having different number-average molecular weights ( Mn=400) and polypropylene glycol monoacrylate (Mn=600) as polypropylene glycol-modified (meth)acrylate compounds.

[0077] 40g of polyvalent isocyanate compound, 40g of polypropylene glycol monoacrylate (Mn=400) and 40g of polypropylene glycol monoacrylate (Mn=600) with 0.15g of DBTDL (dibutyltin dilaurate) and 300g of methyl Ethyl ketone was mixed, and the mixture was stirred at 60° C. for about 5 hours to perform urethanization reaction.

[0078] By completing the urethanization reaction, the polypropylene glycol-modified polyfunctional urethane (meth)acrylate adhesive of Preparation Example 2 was prepared. Same as in P...

comparative preparation Embodiment 1

[0079] Comparative Preparation Example 1: Preparation of Polyethylene Glycol Modified Multifunctional Urethane (Meth) Acrylic Adhesive

[0080] In addition to using only 60 g of polyethylene glycol monoacrylate (Mn=500) instead of polyethylene glycol monoacrylate (Mn=300) in Preparation Example 1, the same method as in Preparation Example 1 was used. Method to prepare polyethylene glycol modified polyfunctional urethane (meth)acrylate adhesive. The progress of the urethanization reaction and the formation of the binder was confirmed by FT-IR.

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Abstract

The present invention relates to a composition for forming a coating layer having a self-healing property, a coating layer, and a film, the composition enabling the provision of a film exhibiting an excellent self-healing property and more improved mechanical properties by being applied to the exterior of various household electric appliances, a display and the like. The composition for forming a coating layer having a self-healing property comprises: a poly(C2-4 alkylene glycol) modified multifunctional urethane (meth)acrylate-based binder; a di- or more functional (meth)acrylate-based compound; a UV initiator; and silica nanoparticles, wherein the binder has a tri- or more functional urethane bond, poly(C2-4 alkylene glycol) modified (meth)acrylate-based compounds are respectively bound via the urethane bond, and at least two of the poly(C2-4 alkylene glycol) modified (meth)acrylate-based compounds bound to each urethane bond comprise poly(C2-4 alkylene glycol) repeating units having different repeating numbers.

Description

[0001] Cross References to Related Applications [0002] This application claims Korean Patent Application No. 10-2014-0169892 filed on December 1, 2014 with the Korean Intellectual Property Office and Korean Patent Application No. 10-2015 filed with the Korean Intellectual Property Office on November 27, 2015 - Priority of 0167372, the disclosures of both applications are hereby incorporated by reference in their entirety. technical field [0003] The present invention relates to a composition for forming a coating having self-healing properties, a coating, and a film, which can provide further improved mechanical properties by applying the composition to the exterior of various molded articles. properties as well as excellent self-healing properties of the film. Background technique [0004] In order to protect products from damage caused by external mechanical, physical and chemical influences, various coatings or coating films are applied to electrical and electronic eq...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D4/02C09D5/00C09D175/06C08J7/04C08J7/046C09D7/61
CPCC08J7/04C09D4/00C09D5/00C09D175/06C08K3/36C09D7/61C09D7/67C08J2475/14C08J2367/02C08J7/0427C08J7/046C08J2451/08C09D4/06
Inventor 金宪张影来金惠珉柳殷相金永锡
Owner LG CHEM LTD
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