Search International and National Patent Collections

1. (WO2017041307) METHOD FOR PRODUCING A TOUGHENED GLASS ARTICLE WITH A DURABLE FUNCTIONAL COATING AND A TOUGHENED GLASS ARTICLE WITH A DURABLE FUNCTIONAL COATING

Pub. No.:    WO/2017/041307    International Application No.:    PCT/CN2015/089476
Publication Date: Fri Mar 17 00:59:59 CET 2017 International Filing Date: Sat Sep 12 01:59:59 CEST 2015
IPC: C03C 17/28
B32B 17/06
C03B 27/02
Applicants: SCHOTT GLASS TECHNOLOGIES (SUZHOU) CO. LTD.
Inventors: LI, Yigang
ZHANG, Guangjun
LIU, Pengshu
KANDA, Hiroshi
ALKEMPER, Jochen
Title: METHOD FOR PRODUCING A TOUGHENED GLASS ARTICLE WITH A DURABLE FUNCTIONAL COATING AND A TOUGHENED GLASS ARTICLE WITH A DURABLE FUNCTIONAL COATING
Abstract:
A method for producing a toughened glass article with a functional coating comprises providing a chemically toughened glass substrate with a first and a second face and a thickness (t) there between. The glass substrate has a surface layer with a compressive stress (CS) extending to a depth-of-layer (DoL) below the first and/or second face. The method further comprises applying a sol-gel coating to the first and/or the second face of said glass substrate and curing the sol-gel coating by heating it to curing temperatures above T a-200 oC during a curing time t c to produce the durable functional coating. The curing time t c satisfies formula (I) wherein T a is the temperature at the annealing point of the glass material of the glass substrate and T c is the maximum curing temperature, where T a and T c are given in oC. Further provided is a toughened glass article with a durable functional coating, in particular produced by the method according to the invention.