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US 8,246,880 B2Granted
Method of producing cellulose ester film, cellulose ester film, polarizing plate and liquid crystal display
AssigneeKonica Minolta Opto, Inc.
InventorsSatomi Kawabe, Kazuto Kiyohara, Kunio Shimizu, Isamu Michihata, Akihiko Takeda, Kazuaki Nakamura
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Abstract
Disclosed is a method for producing a cellulose ester film wherein a film-forming material containing the following components A-C is heated and melted, and a cellulose ester film is formed therefrom by melt-casting. A: a cellulose resin, B: an ester compound obtained by condensing an organic acid represented by Formula (1) and a polyalcohol, and C: an aliphatic polyester or an aliphatic-aromatic copolymer.
Claims14
A method of producing a cellulose ester film comprising the steps of:
- melting a film forming material comprising the following A to C;
- and
- melt casting the melted film forming material,
- A:
- a cellulose ester resin;
- B:
- an ester compound obtained by condensing a polyalcohol and an organic acid represented by Formula (1);
- and
- C:
- an aliphatic polyester or an aliphatic-aromatic co-polyester,
- wherein R1 - R5 each represent a hydrogen atom, an alkyl group, a cycloalkyl group, an aryl group, an aralkyl group, an alkoxy group, a cyclo alkoxy group, an aryloxy group, an aralkyloxy group, an acyl group, a carbonyloxy group, an oxycarbonyl group or an oxycarbonyloxy group, wherein each of these groups may further have a substituent;
- and L represents a linkage group representing a substituted or unsubstituted alkylene group, an oxygen atom or a bond.
9 more elements
Dependencies are inferred from the claim text.