Low-boron zirconium-free neutral glass having an optimized alkali metal ratio

• 收藏
• 分享

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/