Title:
The improved glass constituent which is chemical and has mechanical endurance
Document Type and Number:
Japanese Patent JP6065300
Kind Code:
B2
Abstract:
The embodiments described herein relate to chemically and mechanically durable glass compositions and glass articles formed from the same. In another embodiment, a glass composition may include from about 70 mol.% to about 80 mol.% SiO2; from about 3 mol.% to about 13 mol.% alkaline earth oxide; X mol.% Al2O3; and Y mol.% alkali oxide. The alkali oxide may include NazO in an amount greater than about 8 mol.%. A ratio of Y:X may be greater than 1 and the glass composition may be free of boron and compounds of boron. In some embodiments, the glass composition may also be free of phosphorous and compounds of phosphorous. Glass articles formed from the glass composition may have at least a class S3 acid resistance according to DIN 12116, at least a class A2 base resistance according to ISO 695, and a type HGA1 hydrolytic resistance according to ISO 720.
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Inventors:
Paul Stephen Danielson
Stephen Edward Demartino
Melinda Andre Lake
Robert Michael Molina
Santona Pal
Robert Anthony Shout
Stephen Edward Demartino
Melinda Andre Lake
Robert Michael Molina
Santona Pal
Robert Anthony Shout
Application Number:
JP2016124363A
Publication Date:
January 25, 2017
Filing Date:
June 23, 2016
Export Citation:
Assignee:
CORNING INCORPORATED
International Classes:
C03C3/087; A61J1/00; A61J1/05; C03C3/091
Domestic Patent References:
| JP9241033A | ||||
| JP9124338A | ||||
| JP9124339A | ||||
| JP2012184118A |
Foreign References:
| WO1996024559A1 |
Attorney, Agent or Firm:
Yanagita Seiji
Go Sakuma
Go Sakuma