Patent ID: 6244074
Filing Date: 2001-06-12
Classification: C03C

Abstract:
A method of manufacturing a glass plate with a light-transmissive colored film, comprising the steps of:(1) hydrolyzing and polymerizing a silicate to form a hydrolyzed polymeric product;(2) aging said hydrolyzed polymeric product to achieve a weight-average molecular weight no less than 80000 based on polystyrene;(3) preparing a coating solution comprising the aged hydrolyzed polymeric product, a metal salt as a coloring component, and a solvent;(4) coating said coating solution on a surface of a glass plate;(5) preliminarily firing the glass plate to convert said hydrolyzed polymeric product into a porous gel; and(6) firing the glass plate to vitrify said porous gel and thermally decompose said metal salt into a metal oxide wherein the coated glass plate has a visible light transmittance of 50% or more.