CURABLE COMPOSITION, METHOD OF PRODUCING CURABLE COMPOSITION, CURED MATERIAL, METHOD OF USING CURABLE COMPOSITION, AND OPTICAL DEVICE

摘要

The present invention is: a curable composition containing components (A) through (C), the curable composition characterized by containing component (A) and component (B) in a mass ratio of [component (A):component (B)] = 100:0.3-100:50; a method of producing the curable composition; a cured material obtained by curing the curable composition; a method of using the curable composition as an adhesive for an optical element fixing material or a sealing material for an optical element fixing material; and an optical device. Component (A): a curable polysilsesquioxane compound having repeating units represented by formula (a-1) R1SiO3/ 2 (In the formula, R1 is a C1-10 alkyl group having a substituent or not having a substituent, or an aryl group having a substituent or not having a substituent.). Component (B): microparticles having an average primary particle diameter of 5-40 nm. Component (C): a silane coupling agent having a sulfur atom in the molecule thereof. The present invention provides: a curable composition and a method of producing the same, the curable composition having excellent workability in an application step and giving a cured material having excellent adhesion, peeling resistance, and heat resistance; a cured material obtained by curing the curable composition; a method of using the curable composition as an adhesive for an optical element fixing material or a sealing material for an optical element fixing material; and an optical device.