Actinic-energy-ray-curable resin composition for lens sheet and lens sheet
AssigneesDai Nippon Ink and Chemicals, Inc., Dai Nippon Printing Co., Ltd.
InventorsHiroyuki Tokuda, Yasunari Kawashima, Yasuhiro Doi
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Abstract
The present invention relates to a radiation curable resin composition which comprises epoxy (meth)acrylate, a monofunctional (meth)acrylate, a bifunctional (meth)acrylate having a specific structure, and a bifunctional (meth)acrylate obtained from an aliphatic dihydric alcohol having an oxyalkylene structure and (meth)acrylic acid and further contains a thermoplastic resin, thereby causing satisfactory adhesion to plastic substrates, sufficient shape retention, and excellent shape recovery properties, and satisfaction in moldability including casting efficiency and shape reproducibility, as well as a high refractive index and appropriateness for use as a lens sheet.
Claims11
A radiation curable resin composition for a lens sheet, characterized by comprising:
- an epoxy (meth)acrylate (a);
- a bifunctional (meth)acrylate (b1) expressed by the general formula (1) described below,
- (wherein, R1, R2 denote either hydrogen atoms or a methyl group, and a mean value of m1+m2 is 1 to 5);
- a bifunctional (meth)acrylate (b2) expressed by the general formula (2) described below,
- (wherein, R3, R4 denote either hydrogen atoms or a methyl group, and a mean value of n1+n2 is 8 to 20);
- a bifunctional (meth)acrylate (b3) obtained from (meth)acrylic acid and an aliphatic dihydric alcohol having an oxyalkylene structure;
- a monofunctional (meth)acrylate (c);
- and
- a thermoplastic resin (d).
Dependencies are inferred from the claim text.