发明名称 |
WATER-PROOFING SHEET HAVING HIGH HYDRAULIC PRESSURE RESISTANCE AND HIGH MOISTURE PERMEABILITY, AND PRODUCTION THEREOF |
摘要 |
<p>A water-proofing sheet having high hydraulic pressure resistance and high moisture permeability and having a wet type coagulation polyurethane film on the surface of a cloth. A clay organic composite member containing quaternary ammonium ions introduced between layers of swellable laminar silicates is dispersed in the wet coagulation polyurethane film 0.5 to 20 wt% on the basis of the solid content of the polyurethane, the hydraulic pressure resistance is at least 5,000 mm and permeability is at least 8,000 g/m<2> 24 hrs. Polyurethane is dissolved in a solvent consisting mainly of a nitrogen-containing polar solvent, and a solution prepared by dispersing the clay organic composite member containing the quaternary ammonium ions between the layers of the swellable laminar silicate 0.5 to 20 wt% on the basis of the solid content of the polyurethane is applied to a cloth, and the cloth is immersed in a coagulation bath to coagulate the polyurethane. Thereafter, washing with water and drying are carried out to prepare the water-proofing sheet. <IMAGE></p> |
申请公布号 |
EP0619182(B1) |
申请公布日期 |
1999.03.31 |
申请号 |
EP19930922053 |
申请日期 |
1993.10.07 |
申请人 |
TORAY INDUSTRIES, INC. |
发明人 |
UEMOTO, MASANORI;HURUYA, TAKENORI;SEKIMOTO, TAKAHIRO;KONDO, SUMIO;NISHIZAKURA, KOUICHI;NAKANO, TOSHIAKI |
分类号 |
D06M11/79;D06M13/46;D06M13/463;D06M15/564;D06N3/00;D06N3/14;(IPC1-7):B32B27/12;B32B27/18 |
主分类号 |
D06M11/79 |
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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