发明名称 |
Treatment of hazardous material with vapor suppressing, persistent, water-containing, polymeric air foam |
摘要 |
Air is mechanically entrained in an aqueous solution of surfactant and poly(oxyalkylene) polyisocyanate polymer, the poly(oxyalkylene) portion of which contains sufficient oxyethylene units to render the polymer water-soluble and hydrophilic, to form a fluid, water-based, air foam which is sprayed or otherwise applied to exposed surface of a substrate, such as a body of hazardous material, the applied foam gelling or increasing in viscosity, due to reaction of the polyisocyanate polymer with water to form a poly(oxyalkylene) polyurea polymer, and forming a persistent gelled air foam or viscous air foam in the form of a coating on the exposed surface, thus sealing or otherwise protecting or controlling the substrate.
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申请公布号 |
US4795590(A) |
申请公布日期 |
1989.01.03 |
申请号 |
US19860855461 |
申请日期 |
1986.04.24 |
申请人 |
MINNESOTA MINING AND MANUFACTURING COMPANY |
发明人 |
KENT, DALE W.;BERGER, THOMAS W. |
分类号 |
A62D3/00;A62D1/00;A62D1/02;A62D5/00;B01J13/00;B09B3/00;C08G18/10;C08G18/48;C09K3/00;C09K3/22;C09K21/14;E21F5/02;(IPC1-7):C08G18/08;C08G18/30 |
主分类号 |
A62D3/00 |
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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