发明名称 |
Polycarbonate resin for optical disk substrate and optical disk substrate |
摘要 |
The present invention relates to a polycarbonate resin that has a viscosity average molecular weight of from 10,000 to 17,000 and has characteristic features in an iron content, a free total phenol content, a content of a releasing agent, a fraction of hydroxyl end groups, a <1>H-NMR spectrum or the like. The polycarbonate resin has less defects due to flash without increase of an addition amount of a releasing agent to an unnecessary level and therefore is suitable for a material of an optical disk substrate.
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申请公布号 |
US2004147713(A1) |
申请公布日期 |
2004.07.29 |
申请号 |
US20040756410 |
申请日期 |
2004.01.14 |
申请人 |
IDEMITSU PETROCHEMICAL CO., LTD. |
发明人 |
TOMIOKA TATSUYA;KAWATO HIROSHI;CHOSA MUNEHIRO |
分类号 |
C08G64/06;G11B7/253;G11B7/2533;G11B7/2534;(IPC1-7):C08G64/00 |
主分类号 |
C08G64/06 |
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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