HEXABORATE PARTICULATE COATED WITH SILICA FILM, METHOD FOR PRODUCING THE SAME, COATING LIQUID FOR OPTICAL COMPONENT PRODUCED BY USING THE PARTICULATE AND OPTICAL COMPONENT

摘要

PROBLEM TO BE SOLVED: To provide hexaborate particulate having improved moisture resistance, free from the deterioration of properties and suitable as a sun screening material, etc., a coating liquid for optical components produced by using the particulate and a sun screening optical component. SOLUTION: The particulate is produced by forming a primary coating film on the surface of a hexaborate particulate with a surface-modifying agent such as a silane coupling agent and forming a secondary coating film composed mainly of silica by using a silicic acid compound. The silica-coated hexaborate particulate has a nearly spherical form and excellent moisture resistance. The sun screening optical component is produced by coating a substrate with a coating liquid containing the silica-coated hexaborate particulate dispersed in the liquid or dispersing the silica-coated hexaborate particulate in a liquid medium or a solid medium and forming in the form of a film or a board. COPYRIGHT: (C)2006,JPO&NCIPI