| 发明名称 |
ADDITIVE TO GYPSUM WALL BOARD COMPOSITION AND ITS USAGE |
| 摘要 |
An additive for gypsum cement compositions comprises an aqueous solution of a water soluble sulfate salt and a set retarding chelating agent in a weight ratio of 99:1 to 85:15. The additive preferably comprises sodium sulfate and the pentasodium salt of diethylenetriamine pentaacetic acid. |
| 申请公布号 |
JPH07165450(A) |
申请公布日期 |
1995.06.27 |
| 申请号 |
JP19920096067 |
申请日期 |
1992.03.24 |
| 申请人 |
W R GRACE & CO CONNECTICUT |
发明人 |
CHIMOSHII TOMUSON;SHIYAAREI EI SUMISU |
| 分类号 |
C04B22/14;C04B24/12;C04B28/14;C04B103/24;(IPC1-7):C04B22/14 |
主分类号 |
C04B22/14 |
| 代理机构 |
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代理人 |
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| 地址 |
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