发明名称 |
Polycarbonates with a low yellowness index |
摘要 |
A process for the preparation of polycarbonate resins having a low yellowness index is described. The process involves converting phosgene with a sodium bisphenolate solution by means of a phase interface process performed with the exclusion of oxygen. The sodium bisphenolate solution used in the process has a dissolved oxygen content of <150 ppb. Also described are optical data storage media prepared from the polycarbonate of the present invention. |
申请公布号 |
AU2096100(A) |
申请公布日期 |
2000.07.31 |
申请号 |
AU20000020961 |
申请日期 |
1999.12.10 |
申请人 |
BAYER AKTIENGESELLSCHAFT |
发明人 |
STEFFEN KUHLING;ROLF LANZE;MICHAEL PREIN;RAINER NEUMANN;HERMANN KAUTH;CHRISTIAN KORDS;FRIEDER HEYDENREICH;TONY VAN OSSELAER;WILFRIED HAESE |
分类号 |
C08G64/24;G11B7/2534;G11B7/26;G11B11/105 |
主分类号 |
C08G64/24 |
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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