| 发明名称 |
FOAM CONTROL METHOD FOR VACUUM REFINING OF GLASSY MATERIALS |
| 摘要 |
In a process for refining molten glass or the like by vacuum the collapse of foam is accelerated by depositing foam breaking substances onto the foam. The foam breaking substances include water, alkali metal compounds such as sodium hydroxide or sodium carbonate, and solutions of such compounds. |
| 申请公布号 |
EP0253188(B1) |
申请公布日期 |
1989.07.05 |
| 申请号 |
EP19870109309 |
申请日期 |
1987.06.29 |
| 申请人 |
PPG INDUSTRIES, INC. |
发明人 |
WELTON, WRIGHT MONTGOMERY |
| 分类号 |
C03B3/02;C03B5/04;C03B5/12;C03B5/20;C03B5/225;C03C1/00 |
主分类号 |
C03B3/02 |
| 代理机构 |
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代理人 |
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| 主权项 |
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| 地址 |
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