MANUFACTURING METHOD OF ADHESIVE COMPOSITION HAVING NEAR-IR ABSORPTIVITY, ADHESIVE COATING FILM AND OPTICAL FILTER FOR PDP

摘要

PROBLEM TO BE SOLVED: To prevent the shortcoming that, when an adhesive composition for making an adhesive coating film having near-IR absorptivity is incorporated with cesium-containing tungsten oxide particles as a near-IR absorbing agent, the adhesive coating film faintly takes on a pale hue, to reduce the transparency and color purity, when applied to an optical filter for PDP and the like.;SOLUTION: The adhesive composition is manufactured by the two-step processes: (A) a primary process of preparing a primary dispersion process product by dispersing an adhesive composition containing cesium-containing tungsten oxide particles, an adhesive and a solvent into a dispersion having cesium-containing tungsten oxide particles dispersed therein, in such a state that part of the total amount of the adhesive and the total amount of the solvent are mixed, by using a bead mill; and (B) a secondary process of preparing a final adhesive composition by adding the remaining unmixed adhesive into the primary dispersion process product and agitating it. The adhesive coating film 1 by the above adhesive composition, formed on the substrate 2, is used as the optical filter 10 for PDP and the like.;COPYRIGHT: (C)2009,JPO&INPIT