| 发明名称 |
Low-boron zirconium-free neutral glass having an optimized alkali metal ratio |
| 摘要 |
A zirconium-free neutral glass is provided that finds use in the pharmaceutical sector. The glass has a combination of alkali metal oxides of sodium, potassium and optionally lithium, and a controlled amount of aluminium oxide, which provides a zirconium-free and low-boron neutral glass having good hydrolytic stability, good acid and alkali stability and good devitrification properties. The glass includes the following components in % by weight:;SiO2 72-82,B2O3 3-8,Al2O3 5-8,Na2O2.5-5.5,K2O3.6-8.4,Li2O 0-0.7,MgO 0-0.7,CaO 0-0.4, andTiO2 0-5, whereinLi2O + Na2O + K2O6.8-14.6, andK2O/Na2O ratio0.7-3.4. |
| 申请公布号 |
US2017029319(A1) |
申请公布日期 |
2017.02.02 |
| 申请号 |
US201615224433 |
申请日期 |
2016.07.29 |
| 申请人 |
SCHOTT AG |
发明人 |
Kass Christof;Tratzky Stephan;Männl Reinhard;Eichholz Rainer |
| 分类号 |
C03C3/091;A61K9/08;A61J1/00;C03C4/20 |
主分类号 |
C03C3/091 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A neutral glass that is free of zirconium and comprises the following components in % by weight:SiO2 72-82,B2O3 3-8,Al2O3 5-8,Na2O2.5-5.5,K2O3.6-8.4,Li2O 0-0.7,MgO 0-0.7,CaO 0-0.4, andTiO2 0-5, whereinLi2O + Na2O + K2O6.8-14.6, andK2O/Na2O ratio0.7-3.4. |
| 地址 |
Mainz DE |
