发明名称 |
Process for photo-oxidative stability improvements |
摘要 |
A process for improving the stability to photo-oxidation of a polycyclic aromatic compound having at least two polymorphic forms comprises treating a first polymorph with one or more solvents to obtain the more stable second polymorph and then separating the second polymorph from the solvent.
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申请公布号 |
US7371906(B2) |
申请公布日期 |
2008.05.13 |
申请号 |
US20040924637 |
申请日期 |
2004.08.24 |
申请人 |
EASTMAN KODAK COMPANY |
发明人 |
BEGLEY WILLIAM J.;NICHOLS WILLIAM F.;RAJESWARAN MANJU;ANDRIEVSKY NATASHA;LANDRY MICHAEL R. |
分类号 |
C07C7/20;C07C13/00 |
主分类号 |
C07C7/20 |
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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