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US 9,884,977 B2Granted
Hard coating composition
AssigneeLG Chem, Ltd.
InventorsJoon Koo Kang, Yeong Rae Chang, Jae Hoon Shim, Sung Don Hong, Seung Jung Lee
Life of this patent
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Abstract
The present invention relates to a hard coating composition, and, more particularly, to a hard coating composition used in forming a hard coating film exhibiting high hardness and excellent properties. The hard coating composition can be used to form a high-hardness hard coating film that is not easily curled.
Claims3
A solvent-free hard coating composition, comprising:
- a binder containing a tri- to hexa-functional acrylate-based monomer, and a polyrotaxane;
- inorganic particles;
- and
- a photoinitiator,
- wherein the polyrotaxane includes:
- a macrocycle in which lactone compounds with a (meth)acrylate moiety conjugated to the end thereof are bonded each other;
- a thread moiety held within the macrocycle;
- and stoppers provided at both ends of the thread moiety so as to prevent dissociation of the macrocycle,
- wherein polyrotaxane has an elongation of 15 to 200% according to ASTM D638, and
- wherein the hard coating composition has a viscosity of 300 to 1,200 cps at a temperature of 25° C.
7 more elements
Dependencies are inferred from the claim text.