发明授权
- 专利标题: Production of microporous sheets
- 专利标题(中): 生产微晶片
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申请号: US3769381D申请日: 1971-07-26
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公开(公告)号: US3769381A公开(公告)日: 1973-10-30
- 发明人: KONIG K , TRAUBEL H , REISCHL A , ZORN B
- 申请人: BAYER AG
- 专利权人: Bayer Ag
- 当前专利权人: Bayer Ag
- 优先权: DEF0053836 1967-10-19
- 主分类号: C07C317/22
- IPC分类号: C07C317/22 ; C08G18/10 ; C08G18/38 ; C08G63/688 ; C08J9/28 ; B29D27/00
摘要:
MICROPOROUS SHEETS ARE PREPARED BY REACTING AN NCO TERMINATED PREPOLYMER WITH A DISECONDARY DIAMINE IN AN INERT SUBSTANCE THAT DISSOLVES THE REACTANTS BUT CAUSES ONLY SWELLING OF THE PRODUCT THEREOF AND DRYING THE DISPERSIONS THUS FORMED TO FORM MICROPOROUS FOILS.
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