发明名称 |
Multilayered membrane with high sepn. performance - comprises carrier layer of polyamide, polyvinylidene-di:fluoride polyester or glass fibres porous supply and PVA sepn. layer |
摘要 |
<p>Multilayered membrane comprises (a) a carrier layer; (b) a porous support layer; and (c) a sepn. layer. The improvement is that layer (a) comprises polyamide-, polyvinylidenedifluoride-, polyester- or glass fibres; layer (b) comprises a polysulphone, polyimide, polyvinylalcohol, polyurethane, polyvinylidene difluoride; polyether sulphone, polyacrylonitrile or polyetherimide; and layer (c) comprises polyvinylalcohol. Layer (c) is pore free and has an ordered structure with large microcrystalline components, the crystallites of which in the x-ray diffraction pattern, at a diffraction angle 2 theta of 19.6 deg. to 20 deg., have a reflex having a breadth of 1.2 deg. to 1.5 deg.</p> |
申请公布号 |
DE4004153(C1) |
申请公布日期 |
1991.08.08 |
申请号 |
DE19904004153 |
申请日期 |
1990.02.10 |
申请人 |
METALLGESELLSCHAFT AG, 6000 FRANKFURT, DE |
发明人 |
HAENEL, PETER, DR.-CHEM., 6368 BAD VILBEL, DE;HELMRICH, HARALD, DR.-CHEM., 6000 FRANKFURT, DE;SANDER, ULRICH, DR.-CHEM., 6382 FRIEDRICHSDORF, DE |
分类号 |
B05D7/24;B01D61/36;B01D67/00;B01D69/12;B01D71/38;B32B5/18;B32B17/02;B32B27/30;B32B38/00 |
主分类号 |
B05D7/24 |
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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