Organic compounds -- part of the class 532-570 series – Organic compounds – Amino nitrogen containing
Reexamination Certificate
2006-07-25
2006-07-25
Davis, Brian (Department: 1621)
Organic compounds -- part of the class 532-570 series
Organic compounds
Amino nitrogen containing
C564S307000, C564S426000, C564S427000, C313S503000, C313S505000, C313S506000, C428S690000, C428S917000, C257S091000, C257S099000
Reexamination Certificate
active
07081550
ABSTRACT:
A novel arylamine compound represented by the following general formula (1):wherein R1and R2each independently represent an alkyl group, an alkoxyl group, an aryl group, an arylalkyl group or an aryloxyl group, Ar1to Ar4each independently represent an aryl group or a heterocyclic group, with provisos that at least two of Ar1to Ar4each represent m-biphenyl group or a biphenyl group substituted with aryl groups and the others of Ar1to Ar4each represent biphenyl group and that, when the biphenyl group substituted with aryl groups is a biphenyl group substituted with two aryl groups, the others of Ar1to Ar4each represent an aryl group; and an organic electroluminescence device comprising a layer of organic compounds which comprises the novel arylamine compound. The organic electroluminescence device has a high luminance, excellent heat resistance and a long life and emits light at a high efficiency. The novel arylamine compound provides the advantageous properties to the organic electroluminescence device
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Funahashi Masakazu
Hosokawa Chishio
Davis Brian
Idemitsu Kosan Co. Ltd.
Steptoe & Johnson LLP
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