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:
Dec. 17, 2013
Filed:
Aug. 10, 2009
Koichiro Iida, Kanagawa, JP;
Haruhiko Kusaka, Kanagawa, JP;
Kyoko Endo, Kanagawa, JP;
Yanjun LI, Kanagawa, JP;
Kazuki Okabe, Kanagawa, JP;
Koichiro Iida, Kanagawa, JP;
Haruhiko Kusaka, Kanagawa, JP;
Kyoko Endo, Kanagawa, JP;
Yanjun Li, Kanagawa, JP;
Kazuki Okabe, Kanagawa, JP;
Mitsubishi Chemical Corporation, Tokyo, JP;
Abstract
A subject for the invention is to provide a charge-transporting polymer having high hole-transporting ability and excellent solubility and film-forming properties and a composition for organic electroluminescent element which contains the charge-transporting polymer. Another subject for the invention is to provide an organic electroluminescent element which has a high current efficiency and high driving stability. The charge-transporting polymer comprises a group represented by the following formula (1) as a side chain: wherein in formula (1), the benzocyclobutene ring may have one or more substituents. The substituents may be bonded to each other to form a ring. The spacer represents a group which links the benzocyclobutene ring to the main chain of the charge-transporting polymer through three or more single bonds.