OPTICALLY-ANISOTROPIC-LAYER-FORMING COMPOSITION
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United States of America Patent
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Feb 12, 2015
app pub date -
Aug 7, 2014
filing date -
Aug 9, 2013
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Abstract
Provided is an optically-anisotropic-layer-forming composition usable to make it possible to produce an optically anisotropic film high in transparency. The composition is an optically-anisotropic-layer-forming composition including a polymerizable liquid crystal compound, a photopolymerization initiator, and a solvent (1) that is a lactone solvent having a boiling point of 200° C. or higher. This composition preferably further includes a solvent (2) different from the solvent (1). The content by percentage of the solvent (1) in this composition is preferably from 1 to 70% by mass of the total of the solvents (1) and (2). The solvent (1) is preferably at least one selected from the group consisting of γ-butyrolactone, γ-valerolactone, and δ-valerolactone.
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