发明名称 |
Method for producing highly viscous polyesters |
摘要 |
The present invention relates to a process for the preparation of high-viscosity polyesters with a reduced content of acid end groups, wherein a masterbatch of low-viscosity polyesters and oxazolines is prepared, this is then mixed with a higher-viscosity polyester and this mixture (dry blend) is further processed.
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申请公布号 |
US6515044(B1) |
申请公布日期 |
2003.02.04 |
申请号 |
US20010786712 |
申请日期 |
2001.04.09 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
IDEL KARSTEN-JOSEF;DIETRICH HANS-JUERGEN;MUELLER MATTHIAS |
分类号 |
C08J3/22;C08J5/00;C08K5/353;C08L67/00;(IPC1-7):C08J3/22;C08G73/08 |
主分类号 |
C08J3/22 |
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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