Film, method of manufacturing film, polarizing plate, liquid crystal display device, and composition
AssigneeFUJIFILM Corporation
InventorJyunko IBARAKI
Life of this patent
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Abstract
The object of the present invention is to provide a cellulose acylate-containing film capable of improving durability of polarizer, and of suppressing bleeding of an additive for improving the durability of the polarizer, a method of manufacturing the film, a polarizing plate, a liquid crystal display device and a composition. The present invention provides a film which includes a compound represented by Formula 1 defined by the specification, a compound represented by Formula 2 defined by the specification, and a cellulose acylate; wherein the content of each of the compounds represented by Formula 1 and Formula 2 in a zone ranging from one surface of the film to a depth of 10%, is higher than the content in the residual zone.
Claims15
A film which comprises a compound represented by Formula 1 below, a compound represented by Formula 2 below, and a cellulose acylate, wherein
- a content of the compound represented by Formula 1 below, in a zone ranging from one surface of the film to a depth of 10%, is higher than a content of the compound represented by Formula 1 below in a residual zone, and
- a content of the compound represented by Formula 2 below, in a zone ranging from the one surface of the film to a depth of 10%, is higher than a content of the compound represented by Formula 2 below in a residual zone;
- X-L-(R1)n Formula 1:
- in Formula 1, X represents an acidic group having an acid dissociation constant at 25° C. of 5.5 or less;
- L represents a single bond, or divalent or higher-valent linking group;
- R1 represents an alkyl group having 6 to 30 carbon atoms, an alkenyl group having 6 to 30 carbon atoms, an alkynyl group having 6 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 30 carbon atoms or a heterocyclic group having 6 to 30 carbon atoms;
- n is 1 when L stands for a single bond, and is “valence of L−1” when L stands for a divalent or higher-valent linking group;
- in Formula 2, R26 represents an alkyl group, alkynyl group or aromatic hydrocarbon group;
- each of R27 and R28 independently represents a hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or aromatic heterocyclic group;
- R29 represents a hydrogen atom, alkyl group or aromatic hydrocarbon group;
- and each of R26, R27, R28 and R29 may independently have a substituent.
A composition which comprises a compound represented by Formula 1 below, a compound represented by Formula 2 below, and a monomer having a molecular weight of 500 or less and showing an SP value difference of 2 or more away from the SP value of cellulose acylate;
- X-L-(R1)n Formula 1:
- in Formula 1, X represents an acidic group having an acid dissociation constant at 25° C. of 5.5 or less;
- L represents a single bond or divalent or higher-valent linking group;
- R1 represents an alkyl group having 6 to 30 carbon atoms, an alkenyl group having 6 to 30 carbon atoms, an alkynyl group having 6 to 30 carbon atoms, an aromatic hydrocarbon group having 6 to 30 carbon atoms or a heterocyclic group having 6 to 30 carbon atoms;
- n is 1 when L stands for a single bond, and is “valence of L−1” when L stands for a divalent or higher-valent linking group;
- in Formula 2, R26 represents an alkyl group, alkynyl group or aromatic hydrocarbon group;
- each of R27 and R28 independently represents a hydrogen atom, alkyl group, alkenyl group, aromatic hydrocarbon group or aromatic heterocyclic group;
- R29 represents a hydrogen atom, alkyl group or aromatic hydrocarbon group;
- and each of R26, R27, R28 and R29 may independently have a substituent.
Dependencies are inferred from the claim text.