Toray Industries, Inc.

Masayuki Maeda

Koji Kawai

Satoshi Sakami

Shinya Ueno

Hiroshi Nagase

Kenichi Sato

Takashi Endo

Masahito Yoshikawa

Keisuke Fujita

Takumi Aoki

Masao Iwamoto

Kazuaki Sakoda

Kazuyoshi Higuchi

Provided is a method for producing a carbon nanotube, wherein a catalyst for carbon nanotube production comprising a powdery catalyst supporting a metal on magnesia and having a bulk density of 0.30 g/mL to 0.70 g/mL, in a vertical reactor, is disposed over the whole area in a horizontal cross section direction of the reactor, in such state a carbon-containing compound flowed in a vertical direction inside the reactor is contacted with the catalyst at 500 to 1200&#xb0; C., thereby carbon nanotubes of uniformity and high quality are efficiently synthesized in a large amount.

Process for producing carbon nanotube and catalyst for carbon nanotube production

Indole derivatives and use thereof in medicines

Indole derivatives and medical application thereof

A material for optical recording by utilizing the photochemical hole burning is disclosed. The optical recording material is a composition comprising a watersoluble deuterated polymer as a host component and a water-soluble organic pigment dispersed in the host component as a guest component. By virtue of the deuteration of the host component, the tunnel effect of the hydrogen atoms in the host component is prevented, so that the hole width is narrowed. Thus, the wavelength multiplicity is increased.

Optical recording material

Growing community of inventors

Nagoya, Japan

Masayuki Maeda