Invention Grant
- Patent Title: Gray glass composition
- Patent Title (中): 灰色玻璃组成
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Application No.: US11264908Application Date: 2005-11-02
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Publication No.: US07666806B2Publication Date: 2010-02-23
- Inventor: Larry J. Shelestak , Dennis G. Smith , James M. Baldauff
- Applicant: Larry J. Shelestak , Dennis G. Smith , James M. Baldauff
- Applicant Address: US OH Cleveland
- Assignee: PPG Industries Ohio, Inc.
- Current Assignee: PPG Industries Ohio, Inc.
- Current Assignee Address: US OH Cleveland
- Agent Andrew C. Siminerio
- Main IPC: C03C3/095
- IPC: C03C3/095 ; C03C3/087
Abstract:
A glass composition that includes a base glass composition including: SiO2 from 65 to 75 weight percent, Na2O from 10 to 20 weight percent, CaO from 5 to 15 weight percent, MgO from 0 to 5 weight percent, Al2O3 from 0 to 5 weight percent, K2O from 0 to 5 weight percent and BaO 0 to 1 weight percent, and a colorant and property modifying portion including total iron from 0.25 to 0.9 weight percent, Cr2O3 from 6 PPM to 400 PPM, Er2O3 from 0.3 to 3.0 weight percent, and TiO2 from 0.1 to 0.8 weight percent, wherein the glass composition has a redox ratio ranging from 0.15 to 0.62.
Public/Granted literature
- US20070099788A1 Gray glass composition Public/Granted day:2007-05-03
Information query
