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US 8,025,940 B2Granted
Laminate improving slippage of hardcoat layer
AssigneeDai Nippon Printing Co., Ltd.
InventorHiroyuki Hashimoto
Life of this patent
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Abstract
There is provided a laminate comprising a hard coat layer having the outermost surface to which slipperiness has been imparted. The laminate comprises a transparent substrate and a hard coat layer provided on said transparent substrate. The hard coat layer is formed of a cured product of a composition comprising a fluorine-modified urethane acrylate and/or a polydimethylsiloxane having a polyether-modified acryl or polyether group.
Claims8
An optical laminate in a display comprising a transparent substrate and a hard coat layer provided on said transparent substrate,
- said hard coat layer being formed of a cured product of a composition comprising an ionizing radiation curing composition comprising pentaerythritol triacrylate or dipentaerythritol hexaacrylate, and a fluorine-modified urethane acrylate or a polydimethylsiloxane represented by the following formula (I):
- wherein:
- x and y represent positive integers;
- n is not less than 0;
- A represents a polyether-modified acryl group;
- the fluorine-modified urethane acrylate has a structure such that each hydrogen atom of urethane acrylate is substituted with a fluorine atom;
- the laminate is in roll form without any side tape between adjacent layers;
- the composition per se is curable and slippery so that when the laminate is wound into a roll, adhesion between the hard coat layer and the transparent substrate is suppressed;
- and
- the laminate is formed without including a silicone oil.
7 more elements
Dependencies are inferred from the claim text.