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Low-boron zirconium-free neutral glass having an optimized alkali metal ratio
专利权人:
SCHOTT AG
发明人:
Christof Kass,Stephan Tratzky,Reinhard Männl,Rainer Eichholz
申请号:
US15224433
公开号:
US09919950B2
申请日:
2016.07.29
申请国别(地区):
US
年份:
2018
代理人:
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 aluminum 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.
来源网站:
中国工程科技知识中心
来源网址:
http://www.ckcest.cn/home/

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