Title:
COMPOSITION AND LIGHT-EMITTING ELEMENT
Document Type and Number:
Japanese Patent JP2018188515
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a composition and a compound useful for manufacturing a light-emitting element with sufficiently suppressed initial deterioration.SOLUTION: The composition contains a compound represented by formula (H-1) and a phosphorescent compound. The total content of a compound represented by formula (H-2) and a compound represented by formula (H-3) contained as impurities in the composition as measured by an area percentage method using liquid chromatography is 0.1% or less based on the total amount of the composition.SELECTED DRAWING: None
Inventors:
USUI MOTOAKI
HAYASHI NAOKI
SHIRASAKI MIYOSHI
HAYASHI NAOKI
SHIRASAKI MIYOSHI
Application Number:
JP2017090180A
Publication Date:
November 29, 2018
Filing Date:
April 28, 2017
Export Citation:
Assignee:
SUMITOMO CHEMICAL CO
International Classes:
C09K11/06; C08G61/12; C08K5/3432; C08K5/56; C08L65/00; H01L51/50
Attorney, Agent or Firm:
Patent Business Corporation Saegusa International Patent Office