Method of producing structured inorganic layers

US5766680A · kind A · utility

Assignee

• Institut fuer Neue Materialien gemeinnuetzige GmbH · DE

Inventors

• Helmut Schmidt · Riegelsberg, DE
• Martin Mennig · Idar-Oberstein, DE
• Herbert Krug · Ludwigshafen, DE

Key dates

• Filing date: Jan 10, 1997
• Grant date: Jun 16, 1998
• Expiry date: Jan 10, 2017

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C2218/113
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Structured inorganic layers are produced by optionally mixing a composition which is obtainable by hydrolysis and polycondensation of PA1 (A) at least one hydrolyzable silane of general formula (I) EQU SiX.sub.4 (I) PA1 wherein the radicals X are identical or different and represent hydrolyzable groups or hydroxyl groups, or an oligomer derived therefrom, and PA1 (B) at least one organosilane of general formula (II) EQU R.sup.1.sub.a R.sup.2.sub.b SiX.sub.(4-a-b) (II) PA1 wherein R.sup.1 is a non-hydrolyzable group, R.sup.2 represents a radical carrying a functional group, X has the meaning specified above, and a and b are 0, 1, 2 or 3, the sum (a+b) being 1, 2 or 3, or an oligomer derived therefrom, PA1 in a ratio of amount of substance (A):(B) of 5-50:50-95, as well as PA1 (C) optionally, one or more compounds of glass- or ceramic forming elements, with a fine-scaled filler, applying the resulting composition onto a substrate, structuring the applied composition and thermally densifying the structured coating to form a structured layer.