| 发明名称 |
DISPERGERINGSMIDDEL FOR ANVENDELSE VED OLJEBORING. |
| 摘要 |
<p>Cement slags containing silica and more particularly microsilica. A polymelamine sulphonate is employed as dispersant. In contrast to the usual dispersants, this dispersant makes it possible to overcome the serious disadvantages brought about by the presence of silica when its use is necessary.</p> |
| 申请公布号 |
NO882832(A) |
申请公布日期 |
1989.05.02 |
| 申请号 |
NO19880002832 |
申请日期 |
1988.06.27 |
| 申请人 |
PUMPTECH N.V. |
发明人 |
BARET, JEAN-FRANCOIS;DRECQ, PHILIPPE |
| 分类号 |
C04B24/22;C04B28/02;C09K8/46;(IPC1-7):C04B28/00;E21B33/00 |
主分类号 |
C04B24/22 |
| 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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