Mitsubishi Chemical Corporation

Oji Holdings Corporation

Tomokazu Umemoto

Hideki Gorohmaru

Koichiro Iida

Yanjun Li

Yasutomo Noishiki

Kazuki Okabe

Go Banzashi

Koichi Ishibashi

Tomohiro Abe

Yoshimasa Bando

Kouji Adachi

Yoshiko Kajiyama

Hideko Akai

Hiroyuki Nagatani

Naohide Ogita

Takanori Shimizu

Qi Gao

Hideki Goromaru

Provided are: a highly durable polymer having a high hole-injection/transport capacity; and a composition for an organic electroluminescent element, which contains the polymer. The polymer contains a repeating unit represented by the following Formula (1) or a repeating unit represented by the following Formula (2) (wherein, Arand Areach represent an aromatic hydrocarbon group optionally having a substituent, or an aromatic heterocyclic group optionally having a substituent; X represents —C(R)(R)—, —N(R)—, or —C(R)(R)—C(R)(R)—; Rand Ras well as Rand Reach independently represent an alkyl group optionally having a substituent; Rand Reach independently represent an alkyl group optionally having a substituent, an alkoxy group optionally having a substituent, or an aralkyl group optionally having a substituent; and Rto Rand Rto Reach independently represent hydrogen, an alkyl group optionally having a substituent, an aralkyl group optionally having a substituent, or an aromatic hydrocarbon group optionally having a substituent).

Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, organic EL lighting, and manufacturing method for organic electroluminescent element

The present invention provides with an electron-accepting compound having a structure of the following formula (1):

Electron-accepting compound and composition for charge-transporting film, and luminescent element using same

The present invention provides with an electron-accepting compound having a structure of the following formula (1): 

The object of the present invention is to provide a polymer capable of being insolubilized at a low temperature in a short time, having a high hole injecting and transporting ability and a high durability, and a composition for organic electroluminescent element comprising the polymer. The polymer of the present invention comprises a specific crosslinkable group.

Polymer, composition for organic electroluminescent element, organic electroluminescent element, organic EL display device, and organic EL lighting device

The present invention relates to cellulose fibers wherein a part of the hydroxyl groups of the cellulose have been substituted with at least one of a carboxy group and formyl group of 0.1 mmol/g or larger based on the weight of the cellulose fibers, and have been further substituted with a chemical modification group other than the carboxy and formyl groups.

Cellulose fibers and process for producing the same, cellulose fiber assembly, and cellulose-fiber composite material

An object of the present invention is to provide a cellulose fiber assembly and a cellulose fiber composite, each having low coloration. The present invention is directed to a method for preparing a fibrillated cellulose fiber assembly, in which the cellulose fiber raw materials are subjected to a fibrillation treatment and a reduction treatment. The present invention provides a method for preparing a cellulose fiber assembly, comprising a fibrillation step of fibrillating cellulose fiber raw materials to obtain fibrillated cellulose fibers, an assembly preparation step of obtaining a cellulose fiber assembly using the fibrillated cellulose fibers, and a step of carrying out a reduction treatment. Further, the present invention provides a cellulose fiber composite comprising the prepared cellulose fiber assembly and a matrix material.

Cellulose fiber assembly and method for preparing the same, fibrillated cellulose fibers and method for preparing the same, and cellulose fiber composite

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Kanagawa, Japan

Tomokazu Umemoto