发明授权
US4464508A Water-in-oil emulsions of water-soluble cationic polymers having
improved stability
失效
具有改进的稳定性的水溶性阳离子聚合物的油包水乳液
- 专利标题： Water-in-oil emulsions of water-soluble cationic polymers having improved stability
- 专利标题（中）： 具有改进的稳定性的水溶性阳离子聚合物的油包水乳液
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申请号： US429951申请日： 1982-09-30
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公开(公告)号： US4464508A公开(公告)日： 1984-08-07
- 发明人: James P. Easterly, Jr.
- 申请人： James P. Easterly, Jr.
- 申请人地址： MI Midland
- 专利权人： The Dow Chemical Company
- 当前专利权人： The Dow Chemical Company
- 当前专利权人地址： MI Midland
- 主分类号： B01D21/01
- IPC分类号： B01D21/01 ; B01J13/00 ; C08F2/32 ; C08K3/14 ; C08K3/28 ; C08K3/30
摘要：
Water-in-oil emulsions of water-soluble cationic polymers, e.g., a copolymer of acrylamide and acryloylethyl trimethyl ammonium chloride, exhibiting improved emulsion stability are prepared by incorporating a water-soluble salt of a monovalent anion, e.g., ammonium chloride, into the aqueous phase at some point prior to polymerization.
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