Composition for forming coating layer having self-healing property, coating layer, and film
First Claim
1. A composition for forming a coating layer having a self-healing property comprising:
- a poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder;
a bifunctional or higher polyfunctional (meth)acrylate-based compound;
a UV initiator;
a polycarbonate-modified bifunctional urethane (meth)acrylate-based binder which has a bifunctional urethane bond and each polycarbonate-modified (meth)acrylate-based compound is bound to the urethane bond in the polycarbonate-modified bifunctional urethane (meth)acrylate-based binder; and
a silica nanoparticle which is dispersed in a cross-linked structure of the binder when the binder is in a cured state by UV irradiation,wherein the poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder has a trifunctional or higher urethane bond and each poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compound is bound to the urethane bond in the poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder, andat least two poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compounds bound to each urethane bond include poly(C2-4 alkylene glycol) repeating units whose numbers of repetitions are different from each other.
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Accused Products
Abstract
The present invention relates to a composition for forming a coating layer having a self-healing property which enables the provision of a film exhibiting further improved mechanical properties together with excellent self-healing properties by being applied to the exterior of various household appliances or display devices, etc., a coating layer and a film. The composition for forming a coating layer having a self-healing property comprises: a poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder; a bifunctional or higher polyfunctional (meth)acrylate-based compound; a UV initiator; and a silica nanoparticle, wherein the binder has a trifunctional or higher urethane bond and each poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compound is bound to the urethane bond in the binder, and at least two poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compounds bound to each urethane bond include poly(C2-4 alkylene glycol) repeating units whose numbers of repetitions are different from each other.
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Citations
18 Claims
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1. A composition for forming a coating layer having a self-healing property comprising:
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a poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder; a bifunctional or higher polyfunctional (meth)acrylate-based compound; a UV initiator; a polycarbonate-modified bifunctional urethane (meth)acrylate-based binder which has a bifunctional urethane bond and each polycarbonate-modified (meth)acrylate-based compound is bound to the urethane bond in the polycarbonate-modified bifunctional urethane (meth)acrylate-based binder; and a silica nanoparticle which is dispersed in a cross-linked structure of the binder when the binder is in a cured state by UV irradiation, wherein the poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder has a trifunctional or higher urethane bond and each poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compound is bound to the urethane bond in the poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder, and at least two poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compounds bound to each urethane bond include poly(C2-4 alkylene glycol) repeating units whose numbers of repetitions are different from each other. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A coating layer having a self-healing property comprising a binder layer in which a poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder and a (meth)acrylate group of bifunctional or higher polyfunctional (meth)acrylate-based compound are bound to each other to form a cross-linked structure;
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a polycarbonate-modified bifunctional urethane (meth)acrylate-based binder which has a bifunctional urethane bond and each polycarbonate-modified (meth)acrylate-based compound is bound to the urethane bond in the polycarbonate-modified bifunctional urethane (meth)acrylate-based binder; and a silica nanoparticle dispersed in the cross-linked structure of the binder layer, wherein the binder layer has a cross-linking density of 5 mol/kg to 10 mol/kg, wherein the poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder has a trifunctional or higher urethane bond and each poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compound is bound to the urethane bond in the poly(C2-4 alkylene glycol)-modified polyfunctional urethane (meth)acrylate-based binder, and at least two poly(C2-4 alkylene glycol)-modified (meth)acrylate-based compounds bound to each urethane bond include poly(C2-4 alkylene glycol) repeating units whose numbers of repetitions are different from each other. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification