The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 18, 2019
Filed:
Jan. 13, 2016
Sumitomo Chemical Company, Limited, Tokyo, JP;
Hidenobu Kakimoto, Osaka, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A composition containing a phosphorescent compound and solvents, which is useful for producing a film having excellent flatness when used in a discharge type application method, is provided. The composition contains a phosphorescent compound, a solvent (A) and a solvent (B), in which the boiling point under 1 atm of the solvent (A) (bpA (° C.)) and the boiling point under 1 atm of the solvent (B) (bpB (° C.)) satisfy formulas (11) and (12), and the content of the solvent (A) (wtA (by weight)) and the content of solvent (B) (wtB (by weight)) satisfy formula (13):bp<200° C.≤bp  (11)70° C.≤bp−bp≤120° C.  (12)wt≤wt  (13).