发明授权
- 专利标题: Amine-based, hexavalent chromium reducing agents for cement
- 专利标题(中): 用于水泥的胺类,六价铬还原剂
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申请号: US10680030申请日: 2003-10-07
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公开(公告)号: US06872247B1公开(公告)日: 2005-03-29
- 发明人: Leslie A. Jardine , Charles A. Cornman , Felek Jachimowicz
- 申请人: Leslie A. Jardine , Charles A. Cornman , Felek Jachimowicz
- 申请人地址: US MD Columbia
- 专利权人: W. R. Grace & Co.-Conn.
- 当前专利权人: W. R. Grace & Co.-Conn.
- 当前专利权人地址: US MD Columbia
- 代理商 Craig K. Leon; William L. Baker
- 主分类号: C04B24/12
- IPC分类号: C04B24/12 ; C04B28/02 ; C04B7/00 ; C04B7/52 ; C04B40/00
摘要:
Methods and compositions involving hexavalent chromate-reducing agents, particularly hydroxylamine, hydrazine, or their salts or derivatives, for use in cement compositions and cement processing.