| 发明名称 |
Urea as an additive to improve the viscosity and activity of acrylamide-acrylamide acrylic acid polymers prepared from poor quality acrylamide |
| 摘要 |
Poor quality acrylamide can be used to produce good quality water-soluble polymers by conducting the polymerization in the presence of urea.
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| 申请公布号 |
US4042772(A) |
申请公布日期 |
1977.08.16 |
| 申请号 |
US19760739770 |
申请日期 |
1976.11.08 |
| 申请人 |
NALCO CHEMICAL COMPANY |
发明人 |
BALLWEBER, EDWARD G.;HUNTER, WOOD E. |
| 分类号 |
C08F20/56;(IPC1-7):C08F2/00;C08F4/00;C08F20/70;C08F120/54 |
主分类号 |
C08F20/56 |
| 代理机构 |
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代理人 |
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| 地址 |
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