发明授权
- 专利标题: Grinding aids for hydraulic cement
- 专利标题(中): 水硬水泥研磨助剂
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申请号: US803380申请日: 1985-12-02
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公开(公告)号: US4643362A公开(公告)日: 1987-02-17
- 发明人: Frank G. Serafin
- 申请人: Frank G. Serafin
- 申请人地址: MA Cambridge
- 专利权人: W. R. Grace & Co.
- 当前专利权人: W. R. Grace & Co.
- 当前专利权人地址: MA Cambridge
- 主分类号: B02C23/06
- IPC分类号: B02C23/06 ; C04B24/04 ; C04B7/14 ; B02C23/00
摘要:
Hydraulic cements such as Portland cement are interground with diesters formed by reacting a polyol (e.g. alkylene glycol) with a monobasic carboxylic acid (e.g. acetic acid) to enhance the efficiency of the grinding operation.
公开/授权文献
- US6104043A Schottky diode of SiC and a method for production thereof 公开/授权日:2000-08-15
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