发明名称 |
Process for the preparation of carbonic acid bis-diphenol esters of polyalkylene oxide-diols lengthened via carbonate groups and their use for the preparation of high-molecular, segmented polyether/polycarbonates which can be processed as thermoplastics |
摘要 |
The present invention relates to the transesterification of the carbonic acid aryl esters obtainable according to German Published Patent Specification No. 2,650,533 with an excess of diphenol for the preparation of polyalkylene oxide-diol bis-diphenol carbonates lengthened via carbonate groups. The present invention also relates to the polyalkylene oxide-diol bis-diphenol carbonates, lengthened via carbonate groups, obtained according to the invention and their use for the preparation of polyether/polycarbonates. Finally, the present invention relates to the polyether/polycarbonates, obtained according to the invention, with an improved phase separation between the elastomeric segment and hard segment, which leads to better technological properties of the corresponding polycarbonate elastomers.
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申请公布号 |
US4217437(A) |
申请公布日期 |
1980.08.12 |
申请号 |
US19780913773 |
申请日期 |
1978.06.08 |
申请人 |
BAYER AG |
发明人 |
BARTL, HERBERT;FREITAG, DIETER;KONIG, KLAUS;LINDNER, CHRISTIAN;SCHRECKENBERG, MANFRED;SULING, CARLHANS |
分类号 |
C08G63/00;B01J31/00;C07B61/00;C07C67/00;C07C69/96;C07C313/00;C07C315/04;C07C317/22;C07C319/20;C07C323/20;C08G64/00;C08G64/16;C08G64/18;C08G64/20;C08G64/22;C08G64/24;C08G64/30;(IPC1-7):C08G63/62 |
主分类号 |
C08G63/00 |
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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