Patent ID: 9718728
Date: 2017-08-01
CPC Classifications: C03C

Claim:
1. A method for use in preparing a glass, the method comprising: performing a first ion exchange process to replace at least a first ion in the glass with at least a second ion, the second ion being smaller than the first ion; and performing a second ion exchange process to replace at least the second ion in the glass with at least a third ion, the third ion being larger than the first ion; wherein the second ion comprises lithium; wherein the first ion exchange process comprises treating the glass with at least a first lithium salt; wherein the first ion exchange process comprises treating the glass with a eutectic mixture comprising at least the first lithium salt; and wherein the first lithium salt has a melting point above 600° C., and wherein the eutectic mixture has a melting point below 600° C.