发明名称 |
Crystalline calcium sulfate dihydrate and process for making same |
摘要 |
By the process of the invention a unique crystalline calcium sulfate dihydrate product is precipitated from an aqueous solution of calcium sulfate and a combination of molecularly dehydrated inorganic phosphates. Also within the scope of the invention is a wallboard manufacturing process and a gypsum wallboard which comprises the gypsum of the invention.
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申请公布号 |
US4183908(A) |
申请公布日期 |
1980.01.15 |
申请号 |
US19770809661 |
申请日期 |
1977.06.24 |
申请人 |
SOUTHERN CALIFORNIA EDISON |
发明人 |
ROLFE, RICHARD B |
分类号 |
C01F11/46;C04B11/26;C04B28/14;(IPC1-7):C01F11/46 |
主分类号 |
C01F11/46 |
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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