发明授权
US4756881A Composition of corrosion inhibitors for cooling water systems using
chemically modified acrylamide or methacrylamide polymers
失效
使用化学改性丙烯酰胺或甲基丙烯酰胺聚合物的冷却水系统的腐蚀抑制剂的组成
- 专利标题： Composition of corrosion inhibitors for cooling water systems using chemically modified acrylamide or methacrylamide polymers
- 专利标题（中）： 使用化学改性丙烯酰胺或甲基丙烯酰胺聚合物的冷却水系统的腐蚀抑制剂的组成
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申请号： US861762申请日： 1986-05-09
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公开(公告)号： US4756881A公开(公告)日： 1988-07-12
- 发明人: John E. Hoots , Donald A. Johnson , Dodd W. Fong
- 申请人： John E. Hoots , Donald A. Johnson , Dodd W. Fong
- 申请人地址： IL Naperville
- 专利权人： Nalco Chemical Company
- 当前专利权人： Nalco Chemical Company
- 当前专利权人地址： IL Naperville
- 主分类号： C23F11/10
- IPC分类号： C23F11/10 ; C23F11/173 ; C02F5/14 ; C23F11/167
摘要：
A composition and method for inhibiting corrosion in industrial cooling waters which contain hardness and have a pH of at least 8, which composition comprises a water-soluble organic phosphonate capable of inhibiting corrosion in an aqueous alkaliine environment and a hydrocarbon polymer containing an N-substituted acrylamide polymer with an amide structure as follows: ##STR1## where R.sub.2 is hydrogen or methyl, R.sub.1 is a hydrogen or an alkyl and R is alkylene or phenylene, and X is sulfonate, (poly)hydroxyl, and combinations thereof.