发明授权
- 专利标题: Branched, high-molecular weight thermoplastic polycarbonates
- 专利标题(中): 分支的高分子量热塑性聚碳酸酯
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申请号: US845689申请日: 1977-10-26
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公开(公告)号: US4185009A公开(公告)日: 1980-01-22
- 发明人: Karsten-Josef Idel , Dieter Frietag , Werner Nouvertne
- 申请人: Karsten-Josef Idel , Dieter Frietag , Werner Nouvertne
- 申请人地址: DEX Leverkusen
- 专利权人: Bayer Aktiengesellschaft
- 当前专利权人: Bayer Aktiengesellschaft
- 当前专利权人地址: DEX Leverkusen
- 优先权: DEX2500092 19750103
- 主分类号: C08G64/06
- IPC分类号: C08G64/06 ; C08G64/14 ; C08K5/3417 ; C08G63/62 ; C09K3/28
摘要:
The invention relates to a process for the preparation of branched, thermoplastic, high-molecular weight and soluble polycarbonates having improved properties, by incorporation of 3,3-bis-(4-hydroxyaryl)-oxindoles as a branching agent. The invention further relates to the polycarbonates obtained in accordance with this process.
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