| 发明名称 |
Use of dimethylphosphinylalkanephosphonic acid as a setting retarder in gypsum |
| 摘要 |
The invention relates to dimethylphosphinylalkanephosphonic acids of the general formula I, in which n is 1 or 2, which are used as setting retarders for gypsum. <IMAGE> I
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| 申请公布号 |
US4401473(A) |
申请公布日期 |
1983.08.30 |
| 申请号 |
US19820351576 |
申请日期 |
1982.02.23 |
| 申请人 |
HOECHST AKTIENGESELLSCHAFT |
发明人 |
KLEINER, HANS-JERG;KNITTEL, VOLKER;DEBUS, GERHARD |
| 分类号 |
C04B24/00;C07F9/53;(IPC1-7):C04B11/00;C04B11/14;C01F11/46 |
主分类号 |
C04B24/00 |
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