Seikagaku Corporation

Toyo Ink Mfg. Co., Ltd.

Toyo Ink Sc Holdings Co., Ltd.

Toyocolor Co., Ltd

Toppan Inc.

Taisei Kako Co., Ltd.

Naoki Hamada

Akimitsu Mochizuki

Takashi Kasuya

Yukihiro Ogawa

Ichiro Toyoda

Noriyoshi Takahata

Yuichi Yaegashi

Akio Maeda

Mikiya Kato

Shota Noma

Akiyoshi Iguchi

Motoki Ishikawa

Yoshimitsu Ueno

A catalyst ink which can be directly applied to a polymer electrolyte membrane without producing wrinkles or cracks in the catalyst layer and without lowering performance, and a membrane electrode assembly using the catalyst ink. The catalyst ink for an electrode catalyst layer includes a solvent. The solvent contains catalyst-supported carbon particles which are carbon particles supporting a catalyst, a polymer electrolyte, and at least one of carbon fibers and organic electrolyte fibers. The solvent has a particle size distribution which a first peak lies in a range of 0.1 μm or more and 1 μm or less, and a second peak lies in a range of 1 μm or more and 10 μm or less. The catalyst ink is directly applied to a polymer electrolyte membrane to produce a membrane electrode assembly.

Catalyst ink for forming electrode catalyst layer and method of producing membrane electrode assembly

Cover for medical powder spreading device

Medical powder ejection device

Medical powder spreading device

A colorant for plastic containing a halogenated phthalocyanine pigment (A) that satisfies conditions (1) to (4) below: (1) the average number of halogen substitutions is at least 2.0 but not more than 7.0, (2) the halogen distribution width is at least 5, (3) the amount of aluminum phthalocyanine and halogenated aluminum phthalocyanine is not more than 1.0% by mass, and (4) the central element is at least one element selected from the group consisting of hydrogen, manganese, iron, cobalt, zinc, nickel and copper. As a result, a colorant for plastic can be shown that can color a resin without changing the mechanical or chemical properties of the resin, and in particular can produce a plastic molded article having essentially no migration, extremely low discoloration due to heat, and no deformation such as warping and distortion.

Colorant for plastic, coloring composition for plastic using the same, and plastic molded article

A method for producing a halogenated organic pigment comprising a halogenation step of halogenating an organic pigment with a halogenating agent, wherein the halogenating agent comprises one or more N-haloimide compounds selected from the group consisting of trichloroisocyanuric acid, a metal salt of dichloroisocyanuric acid, tribromoisocyanuric acid, and a metal salt of dibromoisocyanuric acid. According to the present invention, a method for producing a halogenated organic pigment which does not use high toxic raw materials, does not generate a large amount of unfavorable by-products such as hydrogen halide gas and succinimide, and is excellent in terms of safety and productivity can be provided.

Method for producing halogenated organic pigment, halogenated organic pigment obtained by the production method, and colored composition comprising the same

An azobarbituric acid metal complex pigment comprising an azobarbituric acid metal complex of the formula (1), melamine and a compound of the formula (2), which pigment has an average primary particle diameter of 20 nm to 200 nm and a pigment primary particle aspect ratio of 1:1 to 3:1 and is fine and excellent in flowability, transparency and stability with time, and a process for the production of the above pigment 

Azobarbituric acid metal complex pigment and process for the production thereof

A pigment composition composed of 50 to 95% by weight of a phthalocyanine, 1 to 45% by weight of a halogenated phthalocyanine of which the number of substituents of a halogen atom is 1 to 9 and the average number of the substituents is 2.0 to 4.0 and 0.1 to 10% by weight of a phthalocyanine derivative of the formula (1) or a phthalimide methylated phthalocyanine derivative, a colorant containing the above pigment composition and a molded article obtained from a plastic containing the above colorant,P&#x2014;(X)m&#x2003;&#x2003;(1)

Pigment composition and use thereof in plastic

Growing community of inventors

Tokyo, Japan

Naoki Hamada