Showa Denko Materials Co., Ltd.

Daisuke Ryuzaki

Kenichi Ishitsuka

Tomotsugu Sugioka

Yuki Yoshinari

Shigeaki Funyuu

Naoki Asano

Hirotaka Sakuma

Shunsuke Ueda

Kazuyuki Kamo

Iori Fukushima

Hiroshi Takaira

Ryo Honna

Embodiments of the present invention relate to a composition containing a polymer or oligomer (A) and an initiator (B), wherein the polymer or oligomer (A) contains no alkyl groups of 5 or more carbon atoms, contains at least one type of structural unit selected from the group consisting of a structural unit containing an aromatic amine structure and a structural unit containing a carbazole structure, and contains, at one or more terminals, a structural unit containing a thienyl group which may have a substituent, and a degree of solubility of the composition is capable of being changed by applying heat, light, or both heat and light.

Composition, hole transport material composition, and ink composition

An organic electronic material containing a charge transport polymer for which, in a molecular weight distribution chart measured by GPC, the area ratio accounted for by components having a molecular weight of less than 20,000 is not more than 40%, and the area ratio accounted for by components having a molecular weight of 500 or less is not more than 1%.

Organic electronics material and use thereof

Growing community of inventors

Tsuchiura, Japan

Daisuke Ryuzaki