发明名称 |
PROCESS FOR LINING CANALS, DITCHES AND PIPES WITH A NON-SAGGING POLYURETHANE/GEOFABRIC COMPOSITE |
摘要 |
A surface of a canal, ditch or pipe is lined with a polyurethane/geofabric composite. A non-sagging polyurethane composition is aplied to the canal, ditch or pipe surface, a geofabric is contacted with that surface in a manner such that the geofabric becomes impregnated with the non-sagging polyurethane composition which cures to form a polyurethane/geofabric composite. The non-sagging polyurethane is a reaction product of a polyisocyanate, a high molecular weight polyhydroxyl compound and a compound having at least 2 amino groups. A low molecular weight diol or triol, filler and catalyst are optional components. These composites are particularly useful in lining cracked or broken concave or angled surfaces. |
申请公布号 |
WO02074823(A2) |
申请公布日期 |
2002.09.26 |
申请号 |
WO2002US07335 |
申请日期 |
2002.03.07 |
申请人 |
BAYER CORPORATION |
发明人 |
MARKUSCH, PETER, H.;GUETHER, RALF |
分类号 |
C08G18/48;C08G18/66;E02B3/12;F16L55/165 |
主分类号 |
C08G18/48 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|