| 摘要 |
PURPOSE: A composition for forming hard coating layer is provided to have excellent hardness, adhesion and abrasion resistance, and to manufacture a hard coating film capable of reducing curls according to a surface treatment. CONSTITUTION: A composition for forming hard coating layer comprises a urethane acrylate oligomer, a photocurable material except the urethane acrylate oligomer, and a photopolymerization initiator. The urethane acrylate oligomer comprises a chain extender. The chain extender is selected from the group consisting of glycerin, trimethylol ethane, trimethylol propane and 1,2,6-hexanetriol. The molecule weight of urethane acrylate oligomer, comprising the chain extender, is 6,000-10,000. The content of the chin extender is 2-6wt%. |
