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:
Oct. 20, 2020
Filed:
Jan. 23, 2018
Sumitomo Chemical Company, Limited, Tokyo, JP;
Takuya Mori, Osaka, JP;
Hiroyuki Hayasaka, Osaka, JP;
Hidenobu Kakimoto, Osaka, JP;
Toshihiro Hodai, Osaka, JP;
Sumitomo Chemical Company, Limited, Tokyo, JP;
Abstract
A composition which is useful for producing a light emitting device having excellent luminance life is provided. The composition contains a primary fluorinated alcohol represented by the formula (1), a secondary fluorinated alcohol represented by the formula (1') and an electron injectable compound or an electron transportable compound, wherein the content of the secondary fluorinated alcohol is 0.01% by mass to 0.75% by mass with respect to the total content of the primary fluorinated alcohol and the secondary fluorinated alcohol:CHFOH  (1)CHFOH  (1′)In the formula (1), n represents an integer of 1 to 10, and m is an integer satisfying 1≤m≤2n+1. In the formula (1′), n′ represents an integer of 3 to 10, and m′ is an integer satisfying 1≤m′≤2n′+1.