Sumitomo Chemical Company, Limited

Katsumi Agata

Chizu Sekine

Yoshiaki Tsubata

Makoto Kitano

Akiko Nakazono

Jun Oguma

Akihiro Ono

Toshiyuki Araki

Takeshi Yamada

Kouji Toishi

Tomoyuki Suzuki

Makoto Anryu

Kiyotoshi Iimura

Yoshiaki 3050045 Tsubata

A polymer composition comprising 1 to 99 wt % of a copolymer (A) and 99 to 1 wt % of a copolymer (B); the polymer composition used as a light emitting material of a light emitting device having high performances; Copolymers (A) and (B) being copolymers showing fluorescence in the solid state and having a polystyrene-reduced number average molecular weight of 10to 10, and containing a repeating unit (a) and a repeating unit (b); Copolymer (A) has a relation of 100&#x3e;X&#x3e;5, where X(%) is a percentage of the mol number of repeating unit (a) based on the sum of the mol numbers of repeating units (a), and Copolymer (B) satisfies a relation of X&#x2266;X&#x2212;5, where X(%) is a percentage of the mol number of repeating unit (a) based on the sum of the mol numbers of repeating units (a) and (b).

Polymer composition and polymer light emitting device

A polymer compound comprising at least one repeating unit selected from the group of repeating units shown by formula (1) or formula (2),  

Polymer compound and polymer light-emitting device using the same

To provide a solution composition having a significantly high viscosity comprising one or more solvent(s) and one or more polymer(s) having a polystyrene-reduced Z-average molecular weight of 1.0&#xd7;10to 5.0&#xd7;10, and the solution composition allows to easily obtain a film having a favorable film formability and high uniformity.

Solution composition and polymer light-emitting device

A bisazo compound represented by the following general formula (1):

Bisazo compounds and process for dyeing or printing using them

Growing community of inventors

Ichikawa, Japan

Katsumi Agata