Ebara Corporation

Other

Kazuyoshi Takeda

Kunio Fujiwara

Makoto Komatsu

Takeshi Takai

Takanobu Sugo

Hideo Kawazu

Junichi Kanno

Hiroshi Yokota

Hiroshi Nagai

Takashi Kawakami

Noriaki Seko

Tadashi Adachi

Masaji Akahori

Akio Katakai

Hidenobu Arimitsu

Satoshi Konishi

Keiji Hasegawa

Mari Katsumine

Haruo Ogura

Seiji Iimura

Atsuya Ueda

Yoshiyuki Yoneta

Shin Hasegawa

Hideyuki Misawa

An object of the present invention is to provide a novel solid reagent capable of solving the problems of conventional solid reagents based on resin beads. The present invention relates to a solid reagent comprising an organic polymer base in which a polymer side chain is introduced onto the backbone of the organic polymer base via graft polymerization and a reactive functional group is introduced onto the polymer side chain. The organic polymer base is preferably in the form of a fiber, a woven or nonwoven fabric consisting of an assembly of fibers, a porous membrane or a hollow fiber membrane. The graft polymerization is preferably a radiation-induced graft polymerization. Solid reagents according to the present invention can be used in various organic synthetic reactions.

Solid reagents

An object of the present invention is to solve problems of conventional ozone-scavenging materials and to provide an ozone-scavenging material capable of effectively decomposing/removing ozone at low cost. To attain the above object, the present invention provides an ozone-scavenging material characterized in that a metal having ozone-decomposing ability or an oxide thereof is supported on an organic polymer base having a polymer side chain having an ion exchange group on the backbone of a polymer. Said ozone-scavenging material can be prepared by introducing a polymer side chain having an ion exchange group onto the backbone of an organic polymer base, bringing the resulting organic polymer material into contact with a salt of a metal having ozone-decomposing ability to support the ion of said metal on the ion exchange group, and then precipitating fine particles of said metal or an oxide of said metal on the organic polymer material by oxidation or reduction.

Ozone removing material and method for preparing the same

An object of the present invention is to provide a structure of a metal collecting material for use in seawater or river water or industrial wastewater to give the most excellent adsorption efficiency. Another object of the present invention is to provide a process for efficiently separating and recovering valuable metals or noxious metals from a metal collecting material having collected said valuable metals from seawater or noxious metals from river water or wastewater with the least possible waste generation. A metal collector according to an aspect of the present invention is formed by stacking at least partially alternate layers of a fibrous metal collecting material with a spacer for introducing a liquid to be treated into said collecting material, wherein the area of spacer side faces represents 25-75% of the total area of collecting material side faces and spacer side faces in the side faces of the stack. A process for eluting and recovering a metal from a metal collecting material according to another aspect of the present invention comprises the steps: (1) contacting the metal collecting material having absorbed a metal with a dilute eluent, (2) contacting the metal collecting material with an eluent more concentrated than in step 1 to recover the metal into the eluent; and (3) contacting a metal resorbing material with the eluate from step 2 to resorb the metal.

Metal-collecting apparatus and method for elution and recovery of metal from metal-collecting material

An object of the present invention is to provide a heavy metal ion scavenger having more excellent scavenging performance than previously. In order to attain this object, organic polymer materials of the present invention are characterized in that they have a polymer side chain derived from a haloalkyl-substituted styrene on the backbone of an organic polymer base and a functional group capable of forming a complex with a heavy metal ion has been introduced onto said polymer side chain. These organic polymer materials have excellent heavy metal ion scavenging performance so that they can be suitably used as heavy metal ion scavengers.

Organic polymer material, process for producing the same, and heavy-metal ion remover comprising the same

An object of the present invention is to provide a separation functional material having more excellent adsorptive separation performance than previously. In order to attain this object, separation functional materials of the present invention are characterized in that they are formed by introducing a polymer side chain derived from a p-haloalkylstyrene onto the backbone of an organic polymer base and introducing a functional group onto the polymer side chain.

Material having separating function

An object of the present invention is to provide a filter material capable of killing microorganisms, bacteria, fungi or viruses in air or liquids. Antimicrobial organic polymer materials of the present invention comprise an organic polymer material having a polymer side chain containing a unit derived from an N-alkyl-N-vinylalkylamide on a backbone of a polymer substrate, wherein triiodide ion is carried on said organic polymer material.

Bactericidal organic polymeric material

An object of the present invention is to provide a water adsorbing/desorbing organic polymer material having excellent water adsorbing/desorbing performance and which is inexpensive and readily disposable by incineration or the like. In order to attain this object, water adsorbing/desorbing organic polymer materials of the present invention are characterized by having a polymer side chain containing a hydrophilic group on the backbone of an organic polymer base.

Moisture adsorbing and desorbing material

A lubricant composition comprises (1) at least one member selected from the group consisting of carboxylic acid compounds each obtained by the addition of an oxyalkylene group to a hydroxyl group of a hydroxy carboxylic acid and alkali metal salts and amine salts thereof; and (2) at least one base oil selected from the group consisting of alkyl benzene, normal paraffin, isoparaffin and &agr;-olefin. The lubricant composition is highly resistant to putrefaction when it is used as a metal-processing oil composition and shows excellent cutting characteristics in the metal-processing, which requires an extremely high lubricating action, such as form-rolling tap and deep hole boring. Moreover, the composition makes operations such as metal-processing operations easy since the liquid obtained by diluting it with water is transparent or translucent.

Lubricant composition

A new carbonate compound which is N,N'-di-succinimidyl carbonate, N,N'-diphthalimidyl carbonate or N,N'-bis(5-norbornene-2,3-dicarboxyimidyl) carbonate is produced by reacting an N-hydroxy compound of the formula

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Kanagawa, Japan

Kazuyoshi Takeda