Composition and cured product
AssigneeTokyo Ohka Kogyo Co., Ltd.
InventorKazuki Urakawa
Life of this patent
Estimating the term…
Abstract
A composition that gives a cured product having both of high refractive index and high light transmittance, and a cured product of said composition are provided. In the composition including a photopolymerizable compound (A) and metal oxide particles (B), metal oxide particles (B) where those surfaces are functionalized with a functionalizing agent, and which are composed of a metal oxide that exhibits a refractive index of 2.0 or higher for light at a wavelength of 550 nm are used, and a first functionalizing agent including a metal atom having HOMO-LUMO band gap of more than 3.1 eV and 6.0 eV or less, and a second functionalizing agent having a spacer group and not corresponding to the first functionalizing agent are used as the functionalizing agent in combination.
Claims16
A composition comprising a photopolymerizable compound (A) and metal oxide particles (B),
- wherein the metal oxide particles (B) are composed of a metal oxide comprising a metal oxide that exhibits a refractive index of 2.0 or higher for light at a wavelength of 550 nm, and surfaces of the metal oxide particles (B) are functionalized with a functionalizing agent,
- wherein the functionalizing agent comprises:
- a first functionalizing agent comprising at least one of niobium compounds represented by formula (1):
- (R10O)5-nNb(R11)n (1)
- wherein n is an integer of 0 or more and 4 or less, R10 is an alkyl group, and R11 is a monovalent organic group bonding to niobium atom via Nb—C bond, and
- a second functionalizing agent comprising at least one of silane compounds represented by formula (2):
- (R20O)4-xSi(R21—R22)x (2)
- wherein, in the formula (2), x is an integer of 1 or more and 3 or less, R20 is an alkyl group, R21 is a spacer group bonding to silicon atom via Si—C bond, and R22 is a hydrogen atom or a monovalent organic group;
- and
- wherein the second functionalizing agent is present on at least part of the surfaces of the metal oxide particles, and the first functionalizing agent is present on at least part of the second functionalizing agent and is optionally directly present on portions of the metal oxide surface that remain exposed in regions where the second functionalizing agent is not present.
Dependencies are inferred from the claim text.