发明名称 |
PROCESS FOR PREPARING MICROPOROUS FOILS FROM POLYURETHANES CONTAINING HYDRATED ELECTROLYTES |
摘要 |
Microporous sheet structures having increased permeability to water vapor are prepared by coagulating a solution of a polyurethane by washing out the solvent of the solution with a nonsolvent, the coagulation being conducted in the presence of an electrolyte.
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申请公布号 |
US3644233(A) |
申请公布日期 |
1972.02.22 |
申请号 |
USD3644233 |
申请日期 |
1968.07.18 |
申请人 |
HARRO TRANBEL;HARALD OERTEL |
发明人 |
HARRO TRANBEL;HARALD OERTEL |
分类号 |
C08J9/28;(IPC1-7):C09D5/00 |
主分类号 |
C08J9/28 |
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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