Patent ID: 11970593
Assignee: NIPPON PAPER INDUSTRIES CO., LTD.
Field: Other special machines (Mechanical engineering)
Classification: CPC C | IPC C

Claim 9:
10. A hard coat film comprising a hard coat layer containing an ionizing radiation curable resin laminated on at least one surface of a cycloolefin polymer base film through a primer layer, wherein:
the primer layer contains a modified polyolefin resin in which a polyolefin resin is graft-modified with an α,β-unsaturated carboxylic acid or a derivative thereof, and a (meth)acrylic acid ester,
the polyolefin resin is a propylene-ethylene copolymer,
the ratio (wt. %) of a propylene component to an ethylene component (propylene component/ethylene component) in the propylene-ethylene copolymer is in the range of 60/40 to 92/8,
the graft weight of the α,β-unsaturated carboxylic acid or derivative thereof is in the range of 0.8 to 6.2 wt. % when the amount of the modified polyolefin resin is taken as 100 wt. %, and
the modified polyolefin resin has a glass transition temperature in the range of −29° C. to −25° C.