| abstract |
Even if do not produce the multipolymer of variations in refractive index under the invention provides the excellent harsh actual service conditions such at wet heat condition of the various balance of properties required in the optical characteristics of the excellence with the dispersion of low look, high light line transmissivity etc., optical lens prism material yet and contain its curable resin composition.For soluble polyfunctional (methyl) acrylate copolymer and the curable resin composition containing it, described soluble polyfunctional (methyl) acrylate copolymer is by containing simple function (methyl) acrylate (a) with ester ring type structure, there is simple function (methyl) acrylate (b) of alcohol hydroxyl group, 2 officials' energy (methyl) acrylate (c) and 2, the multipolymer that the composition of 4-phenylbenzene-4-methyl-1-pentene (d) carries out copolymerization and obtains, reactive (methyl) that have from (c) at side chain is acrylate-based, at end, there is the structural unit from (d). |