Nippon Shokubai Co., Ltd.

Takashi Yodoshi

Osamu Kaieda

Koichi Hirota

Norimasa Okuda

Masaru Awashima

Hisakazu Shindo

Teruhisa Kajiwara

Yoshiro Hanayama

Yujin Shoda

Toyohiko Kohno, Deceased

Makoto Matsumoto

Mitsuo Kushino

Hitoshi Yano

Kiyoshi Masuda

Kazuaki Abe

Hideki Itoh

Michio Matsuura

Hideki Ito

Miho Onozaki

Ken Morita

The invention provides a method for producing purified N-vinyl-2-pyrrolidone free of odorous components. The method is composed of distilling with a distillation column a liquid, which is formed by adding to an odorous components-containing liquid having a N-vinyl-2-pyrrolidone purity of not lower than 90 wt %, a compound having boiling point lower than that of N-vinyl-2-pyrrolidone, and whereby removing the odorous components together with said low-temperature boiling compound as the distillate.

Method for preparing deodorized N-vinyl-2-pyrrolidone

A method for the production of a flash fixing toner containing at least a binding resin, a coloring agent, and an infrared absorbent, which method is characterized by the steps of blending a master batch containing said infrared absorbent at a concentration 3-50 times as thick as that intended to be incorporated ultimately in the toner, with other toner components, thereby forming a toner composition containing said infrared absorbent at a requested concentration, melting and kneading said toner composition, cooling the molten toner composition, and then pulverizing the solidified toner composition.

Process for preparing flash fixation toner and master batch for use in said process

A nuclear halogenated aromatic compound possessing cyano groups is produced by a method using as a raw material an aromatic compound which possesses cyano groups and assumes a solid state at room temperature and subjecting the raw material to a procedure comprising a step of melting and transporting the compound by a means transport-melting, a step of vaporizing the compound, a step of mixing the compound with a halogen gas, and a step of causing the vapor of the compound to react with the halogen gas in vapor phase in the presence of a catalyst sequentially in the order mentioned, which comprises maintaining a content of a self-condensate of the aromatic compound possessing cyano groups which arise during the melting of the aromatic compound possessing cyano groups in a gas of the compound which reacts with the halogen gas to a level of not more than 2.5 mol % based on the compound. The catalyst used in the method is activated carbon such that the average pore radius thereof determined by the nitrogen adsorption method is not less than 12.2 .ANG. and the cumulative pore volume of the portion of the activated carbon having pore radiuses in the range of 5-100 .ANG. determined by the steam adsorption method is not less than 0.45 g/cc.

Method for production of nuclear halogenated aromatic compound

Method for production of nuclear halogenated aromatic compound possesing

A method that includes mixing a resin and a phthalocyanine compound, provides a resin composition which is useful as a heat radiation-shielding material which is semi-transparent or transparent for visible light but blocks heat rays.

Method for absorbing heat radiation

A novel fluorine-containing phthalocyanine compound represented by the following formula (I): ##STR1## wherein Y is ##STR2## wherein R.sub.1 and R.sub.2 are independently a hydrogen atom or a C1-C8 alkyl group; R.sub.3 and R.sub.4 are independently a C1-C8 alkyl group; X is a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxyl group or a halogen atom; Z is a hydrogen atom, a C1-C4 alkyl group, a C1-C4 alkoxyl group, a C1-C4 alkoxycarbonyl group or a halogen atom; W is a C1-C4 alkoxyl group; e, f, g, h and j are independently an integer of 1 or 2; n is an integer of 1 to 8; and p and q are independently an integer of 1 to 6; a to d are an integer of 0 to 2 with the proviso that the sum of a to d is 1 to 8; and M is a non-metal, a metal, a metal oxide, a metal carbonyl or a metal halide, and further, a method of producing a fluorine-containing phthalocyanine compound represented by the above formula (I).

Phthalocyanine compounds, production method thereof, and near infrared

An electrophotographic plate-making quality matrix plate provided on an electroconductive substrate thereof with a photosensitive layer formed of an alkali-soluble binder resin containing an organic photoelectroconductive compound, which matric plate is characterized by the fact that said organic photoelectroconductive compound is a zinc phthalocyanine represented by the general formula I: ##STR1## wherein R is a --SZ group (where Z is a phenyl group, a phenyl group substituted with an alkyl group of 1 to 5 carbon atoms, or a naphthyl group), and said binder resin is a copolymer obtained by polymerizing a monomer mixture comprising (a) at least one compound selected from the group consisting of hydroxyalkyl acrylates and hydroxyalkyl methacrylates, (b) at least one copolymerizable unsaturated carboxylic acid, (c) at least one styrene compound, and (d) at least one compound selected from among acrylic esters other than said hydroxyalkyl acryaltes of (a).

Matric plate for electrophotographic platemaking, production thereof and

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Tsukuba, Japan

Takashi Yodoshi