Nkk Corporation

Chiyoda Corporation

Mitsubishi Electric Corporation

Nippon Kokan Kabushiki Kaisha

Vista Chemical Company

Hiroaki Taniguchi

Yoshimi Shiroto

Mitsunori Shimura

Yakudo Tachibana

Yoshio Fukui

Kazuhiko Tate

Masami Ono

Jun Miki

Kenji Shimokawa

Taisuke Nishida

Kei Yokoyama

Seiya Otani

Osamu Akimoto

Masayoshi Notoya

Sachio Asaoka

Seiji Aoki

Kazuo Tajima

Yo Osada

Tadao Kimura

Hiroto Tajima

Kazuaki Ueda

Hidetosi Morotomi

Tomonori Kato

Osamu Shigyo

Nobuhiro Takei

Misunori Shimura

From a matrix electrode () provided for a liquid crystal display, a signal indicative of an amount of electric charges between a pair of electrodes that constitutes the matrix electrode () is inputted to an input unit (). A comparison unit () compares that signal with a prestored signal indicative of an amount of electric charges between the pair of electrodes in the matrix electrode () measured when displaying has been performed normally by the liquid crystal display. A determination unit () determines whether a display on the liquid crystal display is normal or abnormal, using a comparison result by the comparison unit ().

Display confirming device, liquid crystal display device, meter display, and display confirming method

According to the method of the invention, it is possible to separate and selectively remove alkyltetralins coexisting in a small amount in a LAB mixture which is an intermediate raw material for surfactants for detergents, the method conveniently being carried out in a continuous manner using a solid adsorbent.

Method of removing alkyltetralins from an alkylbenzene mixture

A partition plate for multiple-stage adsorption separator includes a planar body member having opposing external surfaces and a peripheral edge with conduits providing fluid communication between the opposing surfaces and different points on the peripheral edge. Each of the opposing surfaces is provided with a peripheral rim and covered with a perforated plate whereby an open chamber is defined between the body member and a perforated plate at each of the external faces.

Partition plate for multiple-stage adsorption separator

An adsorbent is charged into a horizontal type packed column having a multiplicity of packed vessels each of which is composed of a partition plate and a cylindrical body and which are connected through the partition plates, from an opening formed on the upper wall of each cylindrical body. Then, each opening is closed tightly with a detachable plug cover. The partition plate is provided with a first fluid passage through which a fluid is passed in the direction of the axis of the cylindrical body and a second fluid passage which is in communication with the first fluid passage, which extends toward the peripheral wall of the cylindrical body and which opens at the cylindrical body. This apparatus is suitable for use as a multiple-stage adsorption separator directed to a simulated moving-bed system.

Separator

A dye solvent useful as a material for microcapsules necessary for the manufacture of pressure-sensitive manifold paper. This solvent essentially consists of a hydroaromatic compound for pressure-sensitive manifold paper. The compound is a polycyclic aromatic compound with three or more aromatic rings, some of which rings have been hydrogenated and exhibits solvency, particularly, for a black pigment and a blue pigment of leuco dye.

Microcapsules of pressure-sensitive copying paper

A process for the preparation of naphthalene mono or polycarboxylic acids, such as 2,6-naphthalene dicarboxylic acid, is disclosed which includes oxidizing a naphthalene compound such as 2,6-diisopropylnaphthalene in a specific solvent with molecular oxygen in the presence of a catalyst containing a heavy metal compound and a bromine compound. The solvent is an aliphatic monocarboxylic acid and may further contain benzene and/or water. By controlling the ratio of the amount of catalyst metal to the feed rate of the raw material naphthalene compound, the yield of desired product can be controlled.

Process for the preparation of naphthalene carboxylic acids

A method of separating 2,6-diisopropylnaphthalene from a mixture containing 2,6-diisopropylnaphthalene and structural isomers thereof including the 2,7-isomer is disclosed, wherein the mixture is first subjected to a selective adsorption and desorption treatment using a zeolite absorbent capable of adsorbing the 2,7-isomer to obtain a first extract containing the sorbed 2,7-isomer and a first raffinate containing non-sorbed isomers including the 2,6-isomer, the 2,6-isomer being thereafter separated from the first raffinate.

Method of separating 2,6-diisopropylnaphthalene from a mixture

A process for the production of 2,6-diisopropylnaphthalene is disclosed wherein an isopropylation reaction mixture containing isopropylated naphthalenes is subjected to transalkylation with a triisopropylnaphthalene-containing mixture to obtain a mixture containing mono-, di- and tri-isopropylnaphthalenes which is then separated into a first fraction containing monisopropylnaphthalenes, a second fraction containing diisopropylnaphthalenes and a third fraction containing triisopropylnaphthalenes. The first and third fractions are recycled to the above system, while the second fraction is subjected to separation treatments for the recovery of 2,6-diisopropylnaphthalene. The second fraction from which 2,6-diisopropylnaphthalene has been removed is subjected to transalkylation with naphthalene to obtain a monoisopropylnaphthalene-rich mixture which is to be fed to the isopropylation step.

Process for the production of 2,6-diisopropylnaphthalene

In a method of the invention for selectively adsorbing CO in a gas mixture containing at least CO and CO.sub.2 with an adsorbent and desorbing the adsorbed CO, the adsorbent carries one metal or a mixture of metals selected from Ni, Mn, Rh, Cu(I) and Ag, and an adsorption temperature is set to be 50.degree. to 250.degree. C. to allow a single-step treatment.

Method of separating carbon monoxide and carbon monoxide adsorbent used

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Kuki, Japan

Hiroaki Taniguchi