| 发明名称 |
Hydrophilic polyurethane/polyurea sponge |
| 摘要 |
A water-absorbing sponge comprises at least one of a sulfo- group containing polyurea and polyurethane, the polymer containing at least one sulfonate equivalent per 20,000 molecular weight units.
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| 申请公布号 |
US4638017(A) |
申请公布日期 |
1987.01.20 |
| 申请号 |
US19850806758 |
申请日期 |
1985.12.09 |
| 申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
LARSON, WAYNE K.;HEDRICK, STEVEN T. |
| 分类号 |
C08G18/65;C08G18/08;C08G18/30;C08G18/32;C08G18/77;C08J9/04;(IPC1-7):C08G18/14 |
主分类号 |
C08G18/65 |
| 代理机构 |
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