| 摘要 |
To provide an epoxy resin composition that is suitable for producing optical sheets which exhibit excellent transparency, heat resistance, strength, smoothness and light resistance, and a cured product thereof. An epoxy resin composition for optical 3 sheets, the composition comprising a polyvalent carboxylic acid (A) represented by formula (I): (wherein, R1's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; q represents the number of substituent R1's, and represents an integer from 1 to 4; and P represents any one of the following x, y and z): (wherein, there may be a plural number of R2's per ring, and R2's each independently represent a hydrogen atom or a methyl group; and * represents a bonding site linked to the oxygen atom; y. A linear alkylene linker having 6 to 20 carbon atoms, with a main chain having 3 or more carbon atoms and being substituted with an alkyl group in at least one site); (wherein, R's each independently represent a hydrogen atom, an alkyl group having 1 to 15 carbon atoms, or a carboxyl group; and * represents a bonding site linked to the oxygen atom, and an epoxy resin (B) having an aliphatic cyclic structure in the molecule). |
