Delamination resistant glass containers with heat-tolerant coatings

US10787292B2 · kind B2 · utility

Assignee

• CORNING INCORPORATED · US

Inventors

• Kaveh Adib · Corning, US
• Dana Craig Bookbinder · Corning, US
• Theresa Chang · Riverside, US
• Paul Stephen Danielson · Dundee, US
• Steven Edward DeMartino · Corning, US
• Melinda Ann Drake · Corning, US
• Andrei Gennadyevich Fadeev · Elmira, US
• James Patrick Hamilton · Port Matilda, US
• Robert Michael Morena · Caton, US
• Santona Pal · Corning, US
• John Stephen Peanasky · Big Flats, US
• Chandan Kumar Saha · Franklin, US
• Robert Anthony Schaut · Corning, US
• Susan Lee Schiefelbein · Ithaca, US
• Christopher Lee Timmons · Big Flats, US

Key dates

• Filing date: Jul 21, 2017
• Grant date: Sep 29, 2020
• Expiry date: Feb 2, 2038

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10T428/131
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Disclosed herein are delamination resistant glass pharmaceutical containers which may include an aluminosilicate glass having a Class HGA 1 hydrolytic resistance when tested according to ISO 720-1985 testing standard. The glass containers may also have a compressive stress layer with a depth of layer of greater than 25 μm. A surface compressive stress of the glass containers may be greater than or equal to 350 MPa. The delamination resistant glass pharmaceutical containers may be ion exchange strengthened and the ion exchange strengthening may include treating the delamination resistant glass pharmaceutical container in a molten salt bath for a time less than or equal to 5 hours at a temperature less than or equal to 450° C.