Asahi Kasei Chemicals Corporation

Asahi Kasei Kogyo Kabushiki Kaisha

Asahi Kasei Kabushiki Kaisha

Aisan Kogyo Kabushiki Kaisha

Yohsuke Koizumi

Hideo Ai

Hirokazu Ohno

Naohiro Tsuruta

Hatsuyo Ohyagi

Atsushi Shimizu

Masahiro Tsukamoto

Akihiro Omori

Masataka Suzuki

Shota Yamanaka

Takashi Suefuji

Akio Muraishi

Tomohiro Niihama

Hiroyoshi Ohya

Provided are a method for reducing a nitrogen oxide in an exhaust gas from an internal combustion engine, a membrane module, an apparatus for reducing a nitrogen oxide from an internal combustion engine using the membrane module, and an internal combustion engine apparatus. A method for reducing a nitrogen oxide in an exhaust gas from an internal combustion engine, the method comprising: a step of bringing pressurized air into contact with one surface of a steam permeable membrane (), and allowing water to flow along the other surface of the steam permeable membrane () to moisturize the pressurized air; and a step of introducing the moisturized air into the internal combustion engine.

Method for reducing nitrogen oxide from internal combustion engine and apparatus therefor

A separation membrane module for separating a specific component from a mixture containing a plurality of components includes a plurality of separation stages each including a plurality of hollow fiber membranes arranged in parallel to each other. The separation stages are connected in series via connection portions allowing passage of the mixture. At lease one parameter relating to separation by the hollow fiber membrane or membranes in each separation stage is determined to provide effective separation throughout the separation stages.

Separation membrane module and fuel vapor processing apparatus equipped with the same

An adsorptive body is provided which is high in water permeation and gas permeation and can adsorb, concentrate, separate and remove components present in extremely small amounts in a liquid or gas without causing the dissolution of impurities. The present invention relates to a sintered body comprising a mixture of: thermoplastic resin particles having no functional groups with adsorbability; and resin particles having functional groups with adsorbability bonded through graft polymer chains at the surface.

Sintered body, resin particles and method for producing the same

Sintered body, resin particles, and method for producing the same

Disclosed is substantially spherical porous beads of an aromatic polyether ketone resin, which have an average particle diameter of 50 to 5,000 &mgr;m and a porosity of 40 to 99%. Also disclosed is a method for producing porous beads, which comprises: mixing, while heating, an aromatic polyether ketone resin with a sol vent capable of dissolving the resin to thereby obtain a resin solution; dispersing the resin solution in a liquid dispersion medium which is incapable of dissolving the resin and is non-miscible with the solvent, to thereby obtain a dispersion having the resin solution dispersed therein in the form of globules; cooling the dispersion while maintaining the dispersed form of the resin solution in the liquid dispersion medium, to thereby solidify the resin in the resin solution; and separating the solidified resin from a mixture of the solvent and the liquid dispersion medium, thereby obtaining substantially spherical porous beads of the aromatic polyether ketone resin.

Porous beads and process for producing the same

A linear polymer having a recurring unit represented by the formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently is a hydrogen atom, a C.sub.1-10 alkyl group, a C.sub.6-10 cycloalkyl group, an aryl group, or a halogen atom and the ethynyl group is in either meta position or para position to the main polymer chain; and a weight-average molecular weight of 1,000 to 1,000,000. A resin composition consisting essentially of (i) a polymer having a recurring unit represented by the formula (I) or a polymer having a recurring unit represented by the formula (I) and a recurring unit represented by the formula (II): ##STR2## wherein X and Y each independently is a C.sub.6-20 aryl group, a C.sub.1-10 alkyl group, a C.sub.6-10 cycloalkyl group, a silyl group having a C.sub.1-10 alkyl group or a C.sub.6-10 aryl group, a hydrogen atom or a halogen atom, and the ethynyl group of the unit (I) is in either meta position or para position to the main polymer chain; and the weight ratio of the unit (I) to the unit (II) ranges from 1/99 to 99.5/0.5 and (ii) at least one agent selected from the group consisting of (a) an improvement agent for casting and molding property in an amount of about 3 to about 50% by weight based on the weight of the polymer; (b) an adhesive agent in an amount of about 1 to about 15% by weight based on the weight of the polymer; and (c) a photocrosslinking initiator in an amount of about 0.1 to about 20% by weight based on the weight of the polymer.

Photocurable compositions of poly(ethynylphenyl)acetylene, its copolymer

A linear polymer having a recurring unit represented by the formula (I): ##STR1## wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 each independently is a hydrogen atom, a C.sub.1-10 alkyl group, a C.sub.6-10 cycloalkyl group, an aryl group, or a halogen atom and the ethynyl group is in either meta position or para position to the main polymer chain; and a weight-average molecular weight of 1,000 to 1,000,000.

Poly(ethynylphenyl)acetylene, its copolymer and composition thereof

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Kawasaki, Japan

Yohsuke Koizumi