发明授权
US4530766A Method of inhibiting scaling in aqueous systems with low molecular
weight copolymers
失效
用低分子量共聚物抑制含水体系中结垢的方法
- 专利标题： Method of inhibiting scaling in aqueous systems with low molecular weight copolymers
- 专利标题（中）： 用低分子量共聚物抑制含水体系中结垢的方法
-
申请号： US653998申请日： 1984-09-24
-
公开(公告)号： US4530766A公开(公告)日： 1985-07-23
- 发明人: William M. Hann , John Natoli
- 申请人： William M. Hann , John Natoli
- 申请人地址： PA Philadelphia
- 专利权人： Rohm and Haas Company
- 当前专利权人： Rohm and Haas Company
- 当前专利权人地址： PA Philadelphia
- 主分类号： C02F5/10
- IPC分类号： C02F5/10 ; C08F220/06
摘要：
A method for inhibiting scale formation in aqueous systems using water-soluble, low molecular weight copolymers of unsaturated aliphatic carboxylic acids is provided. Copolymers formed from about 30 to about 70 weight percent acrylic acid and from about 70 to about 30 weight percent methacrylic acid, having a weight average molecular weight ranging from about 2000 to about 5000, are preferred for inhibiting the formation of common hardness ion salt scale such as calcium carbonate, calcium phosphate and barium sulfate. The copolymers are hydrolytically stable and can be used effectively in high temperature applications. The copolymers are also effective dispersants for suspended inorganic particulate materials, such as clay, in aqueous systems.
公开/授权文献
- US5170262A Electronic camera 公开/授权日：1992-12-08
信息查询
IPC分类:
