| 摘要 |
PROBLEM TO BE SOLVED: To provide a detergent used for cleaning an organic EL (electroluminescent) material sticking to a vacuum deposition apparatus, a metal mask, a crucible, etc., used when a display employing the organic EL material is produced, having excellent detergency with simple operation and slightly adversely affecting human bodies or the environment. SOLUTION: The detergent comprises a cyclic compound represented by formula (1) (wherein, R is a CH<SB>2</SB>or an O; and R' is an alkylene group which may have a substituent) such asε-caprolactone or propylene carbonate and dimethyl sulfoxide as a cleaning component. COPYRIGHT: (C)2007,JPO&INPIT
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