发明名称 |
Gypsum set accelerator |
摘要 |
A gypsum set accelerator, produced by compression milling a mixture of ground gypsum rock and starch, and the addition thereof to an aqueous slurry of settable calcined gypsum such as in the forming of paper-covered gypsum wallboard.
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申请公布号 |
US4019920(A) |
申请公布日期 |
1977.04.26 |
申请号 |
US19750580136 |
申请日期 |
1975.05.23 |
申请人 |
NATIONAL GYPSUM COMPANY |
发明人 |
BURKARD, EDWARD A.;KOSSUTH, DONALD A. |
分类号 |
C04B28/14;(IPC1-7):C04B11/22 |
主分类号 |
C04B28/14 |
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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