发明授权
- 专利标题： Corrosion control
- 专利标题（中）： 腐蚀控制
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申请号： US353231申请日： 1989-05-18
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公开(公告)号： US5022926A公开(公告)日： 1991-06-11
- 发明人: Robert P. Kreh , Joseph T. Lundquist , Wayne L. Henry , John A. Kelly , Vincent R. Kuhn
- 申请人： Robert P. Kreh , Joseph T. Lundquist , Wayne L. Henry , John A. Kelly , Vincent R. Kuhn
- 申请人地址： NY New York
- 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： NY New York
- 主分类号： C09K15/06
- IPC分类号： C09K15/06 ; C02F5/08 ; C02F5/10 ; C02F5/12 ; C02F5/14 ; C09K15/08 ; C09K15/14 ; C09K15/20 ; C09K15/24 ; C09K15/26 ; C23F11/12 ; C23G1/24
摘要：
A method of removing iron contaminants in an aqueous system by introducing and maintaining within the system at least one ortho dihydroxyaromatic compound having at least one electron withdrawing group pendant from the aromatic ring and, further, a method of inhibiting calcium scale formation in the presence of iron contaminants by utilizing at least one dehydroxyaromatic compound in combination with calcium scale inhibitors.
公开/授权文献
- US6161368A Baler for harvested crops 公开/授权日：2000-12-19
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