发明名称 |
BICOMPONENT MOISTURE BARRIER POLY(ETHERIMIDE) ESTER FILMS |
摘要 |
<p>A bicomponent film of a hydrophilic copolyester having a WVTR of at least 3500 gm.mil/m<2>/24 hrs. of a poly(etherimide) ester elastomer containing about 25-60 weight percent ethylene oxide units, and a hydrophobic copolyester having a WVTR of 400-2500 gm.mil/m<2>/24 hrs. of a poly(etherimide) ester elastomer or a segmented copolyester elastomer having no more than about 20 weight percent ethylene oxide units in the hydrophobic elastomers, the bicomponent film having a separation ratio for water vapor of at least 1.2 as determined by ASTM/E 96-66 (Procedure BW).</p> |
申请公布号 |
EP0322778(A3) |
申请公布日期 |
1990.09.19 |
申请号 |
EP19880121556 |
申请日期 |
1988.12.23 |
申请人 |
E.I. DU PONT DE NEMOURS AND COMPANY |
发明人 |
HOESCHELE, GUENTHER KURT;OSTAPCHENKO, GEORGE JOSEPH |
分类号 |
B01D71/48;B01D71/64;B32B27/08;B32B27/36;C08G63/685;C08G73/16;C08J5/18;(IPC1-7):B32B27/36 |
主分类号 |
B01D71/48 |
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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