发明名称 |
SIMULATED NATURAL SPONGE FROM URETHANE |
摘要 |
The invention disclosed is for new improved hydrophilic crosslinked polyurethane foams which simulate natural sponges and prepared by reacting an isocyanate capped polyoxyethylene polyol reactant with an aqueous reactant and a carefully balanced combination of a nonionic surface-active agent and a liquid defoaming agent. The resultant foams are characterized by a majority of large size cells and membranes which themselves are foamed with small cells.
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申请公布号 |
US4036791(A) |
申请公布日期 |
1977.07.19 |
申请号 |
US19750577969 |
申请日期 |
1975.05.15 |
申请人 |
W. R. GRACE & CO. |
发明人 |
GUTHRIE, JAMES LEVERETTE;BACH, DONALD JOHN |
分类号 |
C08G18/00;C08G18/48;C08G18/66;C08J9/00;(IPC1-7):C08G18/06;C08G18/08;C08G18/14 |
主分类号 |
C08G18/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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