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AssigneeKonica Minolta Opto, Inc.
InventorsKoji Nakajima, Takashi Murakami, Ryohei Enomoto
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To provide hard coat films having high hardness, and uniform durability against scratching and high flatness even with a small thickness and a large width, and to provide a method producing the same. The hard coat films are provided with an actinic ray curable resin on a cellulose ester film thereof, the cellulose ester film containing a UV absorber and 2 or more plasticizers. One of the plasticizers is a polyalcohol ester type and the other one is a non-phosphate ester type. The cellulose ester film is produced by biaxially stretching of a cellulose ester film with a total acyl substitution degree ranging from 2.6 to 2.9, a number average molecular weight ranging from 80,000 to 200,000, and a ratio of a weight-average molecular weight to a number average molecular weight ranging from 1.4 to 3.0.
A hard coat film comprising a cellulose ester film containing a UV absorbing agent and two or more plasticizers, the cellulose ester film having thereon a layer of an actinic ray-cured resin,
A method of producing a hard coat film comprising the steps of:
Dependencies are inferred from the claim text.