发明名称 |
Process for recovering dyestuff from dyestuff-containing information-recording media and solvent used for recovery |
摘要 |
The present invention provides a process for efficient recovery of dyestuffs from dye-based optical disks, and to provide a solvent used for recovery. Disclosed herein is a process for recovering dyestuffs from dye-based optical disks by treating the dyestuff-containing layer with a solvent containing a singlet oxygen quencher. Disclosed also herein is a solvent for dyestuff recovery which contains a singlet oxygen quencher.
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申请公布号 |
US6019798(A) |
申请公布日期 |
2000.02.01 |
申请号 |
US19980159570 |
申请日期 |
1998.09.24 |
申请人 |
SONY CORPORATION |
发明人 |
ICHIMURA, MARI;TOMITA, HIDEMI |
分类号 |
B01D11/04;B09B3/00;C09B67/44;C09B67/54;G11B7/26;(IPC1-7):C09B67/54 |
主分类号 |
B01D11/04 |
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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