FORMATION OF COATED FILM OF OXIDE

• Main Authors: NISHIKAWA AKIO, KANESHIRO TOKUYUKI, YOKOYAMA TAKASHI
• Format: Patent
• Language: English
• Published: 12.11.1984
• Subjects: BASIC ELECTRIC ELEMENTS; CHEMICAL COMPOSITION OF GLASSES, GLAZES, OR VITREOUSENAMELS; CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOIDCHEMISTRY; CHEMISTRY; COMPOUNDS CONTAINING METALS NOT COVERED BY SUBCLASSESC01D OR C01F; COMPOUNDS OF THE METALS BERYLLIUM, MAGNESIUM, ALUMINIUM,CALCIUM, STRONTIUM, BARIUM, RADIUM, THORIUM, OR OF THERARE-EARTH METALS; COMPOUNDS THEREOF; ELECTRIC SOLID STATE DEVICES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; GLASS; INORGANIC CHEMISTRY; JOINING GLASS TO GLASS OR OTHER MATERIALS; METALLURGY; MINERAL OR SLAG WOOL; NON-METALLIC ELEMENTS; PERFORMING OPERATIONS; PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL; SEMICONDUCTOR DEVICES; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS,MINERALS OR SLAGS; SURFACE TREATMENT OF GLASS; THEIR RELEVANT APPARATUS; TRANSPORTING

PURPOSE:In hydrolyzing an metal alkoxide in an organic solvent to give a hydroxide, polymerizing it under heating, to form the titled film free from pinholes on a substrate, by using a metal salt of carboxylic acid as a catalyst for the hydrolysis and polymerization. CONSTITUTION:A metal alkoxide and a given amount of a metal salt of carboxylic acid as a catalyst for hydrolysis and polymerization are added to an organic solvent, blended with stirring. This blended solution is applied to a substrate, and heated to form a coated film of oxide. Consequently, the metal alkoxide is rapidly hydrolyzed by a catalytic action in the organic solvent to give a hydroxide, which is polymerized under heating with the same catalyst to form easily a film of oxide.