| abstract |
Provided is a fluorene skeleton-containing polyfunctional (meth) acrylate that is compatible with excellent scratch resistance and high refractive index. Formula (1) (wherein R 1a and R 1b are non-radically polymerizable substituents, R 2a and R 2b are alkylene groups, R 3a and R 3b are hydrogen atoms or methyl groups, and R 4a and R 4b are non-radical polymerizations) The sex substituents, k1 and k2 are each an integer of 0 to 4, m1 and m2 are each an integer of 0 or more, n1 and n2 are each an integer of 1 to 4, and p1 and p2 each represent an integer of 0 to 4, respectively. + p1 ≦ 5 and n2 + p2 ≦ 5), the average value of m1 + m2 is adjusted to 8.5 to 17. |