发明名称 |
Moulding compositions containing polycarbonate with small birefringence |
摘要 |
<p>A thermoplastic molding composition suitable for the preparation of articles having low birefringence is disclosed. Accordingly, the composition contains polycarbonate and a polyester copolymer based on cyclohexane-dimethanol, ethylene glycol and phthalic acid. The invention resides in the findings that the incorporation of a polycarbonate resin having a melt flow index greater than 18 g/10 minutes impart to the composition low birefringence values. The composition is suitable for the preparation of optical storage media, including compact discs.</p> |
申请公布号 |
EP0737716(A2) |
申请公布日期 |
1996.10.16 |
申请号 |
EP19960105197 |
申请日期 |
1996.04.01 |
申请人 |
BAYER CORPORATION |
发明人 |
MASON, JAMES P.;NEWCOME, JON M.;TENNANT, JEFF M. |
分类号 |
C08L69/00;G11B7/253;(IPC1-7):C08L69/00;C08L67/02 |
主分类号 |
C08L69/00 |
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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