Nippon Petrochemicals Company, Limited

Dai Nippon Printing Co., Ltd.

Nippon Oil Company

Jx Nippon Oil Energy Corporation

Eneos Corporation

Teruhisa Kuroki

Koichi Sato

Tatsuo Yamaguchi

Tatsuya Chiba

Yutaka Otsuki

Toru Nakamura

Hitoshi Yuasa

Masayuki Ando

Hiroyoshi Omika

Eiji Yoda

Yuichi Tokumoto

Tsutomu Takashima

Norikatsu Ono

Nobuo Ikeda

Koji Fujimura

Takeshi Omata

Koichi Ohashi

Hiroyoshi Oomiya

Ryuichiro Furusawa

Provided is a method for producing a butene polymer, comprising: a polymerization step of performing polymerization reaction by contacting a raw material component comprising 20% by mass or more of isobutene with a Lewis acid catalyst; and a distillation step of subjecting a solution to be treated containing a reaction product of the polymerization reaction and a butene oligomer added to the reaction product to distillation treatment to obtain the butene polymer, wherein an amount of the butene oligomer added is 25 parts by mass or larger with respect to 100 parts by mass of the reaction product.

Method for producing butene polymer

A method for producing an olefin polymer, in which an olefin compound is polymerized in the presence of a Lewis acid catalyst at a temperature of 0&#xb0; C. or lower to obtain an olefin polymer, the method comprising a step of feeding a raw material liquid including the olefin compound to a reactor provided with a cooling unit, a step of polymerizing the olefin compound in the reactor to obtain a reaction liquid including the olefin polymer, a deactivation step of adding a deactivator to the reaction liquid taken out from the reactor to deactivate the Lewis acid catalyst, and a step of supplying the reaction liquid after the deactivation step to a cold recovery unit to recover cold from the reaction liquid, wherein the amount of the Lewis acid catalyst is 0.5&#xd7;10to 1.0&#xd7;10mol % based on the total amount of the olefin compound.

Method for producing olefin polymer

An efficient dehalogenation can be carried out by a method which comprises treating an organic compound containing a compound of halogen, such as fluorine or chlorine, as an impurity and having non-conjugated carbon-carbon double bonds, for example, butene polymer produced with a boron trifluoride catalyst, with an inorganic solid treating agent containing aluminum atoms. When the dehalogenation is conducted in the presence of a basic substance such as ammonia or an amine, it can be continued over long while inhibiting the isomerization of the non-conjugated carbon-carbon double bonds.

Method of dehalogenating hydrocarbon containing carbon-carbon double bond

A method for producing a color filter involves (a) forming a positive photosensitive coating film on a transparent electrically conductive layer of a transparent substrate; (b) forming a light-irradiated region where a light irradiation amount is different in two steps; (c) developing a larger light-irradiated portion to lay-open the transparent electrically conductive layer followed by electrodepositing a light shielding layer thereon; (d) forming on the positive photosensitive coating film undeveloped in the step (c) a light-irradiated region where a light irradiation amount is different in two steps; (e) developing a larger light-irradiated portion of the photosensitive coating film to lay-open the transparent electrically conductive layer followed by electrodepositing a colored coating thereon; (f) forming on the positive photosensitive coating film undeveloped in the step (e) a light-irradiated region where a light irradiation amount is different in at least three steps; and (g) developing the photosensitive coating film to lay-open the transparent electrically conductive layer followed by electrodepositing a colored coating thereon, operation of the developing and electrodepositing being sequentially repeated at least twice in decreasing light irradiation amounts.

Method for producing color filter

A process for the preparation of a photocurable resin which comprises the steps of

Photocurable resin composition for the preparation of a printed wiring

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Kawasaki, Japan

Teruhisa Kuroki