Toray Industries, Inc.

Kohei Yamashita

Koji Yamauchi

Shunsuke Horiuchi

Makito Yokoe

Katsushige Yamada

Masateru Ito

Kosaku Takeuchi

Daisuke Yamamoto

Daijiro Tsukamoto

Masato Akahira

Keiko Ichinose

Masato Honma

Kazuhiro Tanahashi

Sadayuki Kobayashi

Tomoyuki Horiguchi

Kenji Kawamura

Atsuki Tsuchiya

Naokichi Imai

Yoshihiro Naruse

Takeshi Unohara

Tatsuya Takamoto

Kayo Tsuchiya

Eri Takao

Kohei Koyanagi

Takumi Wakabayashi

A method of producing &#x3b5;-caprolactam from 3-oxoadipic acid includes: step 1 of mixing at least one selected from the group consisting of 3-oxoadipic acid and salts thereof with a catalyst and a solvent in the presence of hydrogen to produce 3-hydroxyadipic acid; and step 2 of reacting the 3-hydroxyadipic acid which is a product of step 1, a salt or carboxylic acid derivative thereof, or a mixture of these with hydrogen and ammonia.

Method of producing epsilon-caprolactam

A method for selective production of &#x3b5;-caprolactam, wherein a substance inducible from a biomass resource is used as a material; the reaction process is short; ammonium sulfate is not produced as a by-product; and production of by-products is suppressed; is disclosed. The method for producing &#x3b5;-caprolactam comprises the step of reacting a particular compound inducible from a biomass resource, such as &#x3b1;-hydromuconic acid, 3-hydroxyadipic acid, or 3-hydroxyadipic acid-3,6-lactone, or a salt thereof with hydrogen or ammonia.

Method for producing epsilon-caprolactam

A heat-resistant, chemical-resistant polyphenylene sulfide block copolymer containing polyphenylene sulfide units and aromatic polyester units, wherein the polyphenylene sulfide units have a number average molecular weight in the range of 6,000 to 100,000. Provided is a polyphenylene sulfide block copolymer that overcomes the disadvantages of block copolymers including a low-molecular-weight polyphenylene sulfide segment and having poor heat resistance and chemical resistance.

Polyphenylene sulfide block copolymer, method for manufacturing same, and method for manufacturing polyphenylene sulfide porous body

Provided is a molding material comprising a composite of 1 to 50 wt % of a continuous reinforcing fiber bundle (A) and 0.1 to 20 wt % of a poly (phenylene ether ether ketone) oligomer (B); and 30 to 98.9 wt % of a thermoplastic resin (C) adhering to the composite, wherein the component (B) has a melting point of not higher than 270&#xb0; C. Also provided are a method for molding the molding material, a method for producing the molding material, and a method for producing a fiber-reinforced composite material. A molded article having high heat resistance and dynamic properties can be easily produced without impairing the economic efficiency and productivity during the process for producing a molding material. In addition, a fiber-reinforced composite material can be produced with more ease and high productivity.

Molding material, molding method using same, method for producing molding material, and method for producing fiber-reinforced composite material

A block comprised of a copolymer is obtained by ring-opening polymerization of a cyclic polyarylene sulfide, so that a block copolymer is produced to have a maximum peak molecular weight measured by size exclusion chromatography (SEC) in a range of not less than 2,000 and less than 2,000,000 and have a unimodal molecular weight distribution in this range.

Block copolymer and production method of the same

A stimuli-responsive material includes a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state; and a medical material and an anti-adhesive material, each of which includes a stimuli-responsive material including a stimuli-responsive polymer, fibers and water, wherein the fibers have a number average diameter of 1 to 900 nm and are present in the stimuli-responsive material in a dispersed state.

Stimuli-responsive material and medical material

A cyclic poly (phenylene ether ether ketone) composition includes not less than 60% by weight of a cyclic poly (phenylene ether ether ketone) represented by the following Formula (I), which is characterized in that the cyclic poly (phenylene ether ether ketone) is a mixture of cyclic poly (phenylene ether ether ketone)s having different repeating numbers (m) and the composition has a melting point of not higher than 270&#xb0; C.; and a method of producing a poly (phenylene ether ether ketone) characterized by heat-polymerizing the cyclic poly (phenylene ether ether ketone) composition: where m represents an integer of 2 to 40.

Cyclic polyphenylene ether ether ketone composition and method for producing the same

There is provided a production method of poly(phenylene ether ether ketone). The production method makes a cyclic poly(phenylene ether ether ketone) composition subjected to thermal ring-opening polymerization in the presence of a metal alkoxide and/or a metal phenoxide. The cyclic poly(phenylene ether ether ketone) composition includes 60% by weight or more of cyclic poly(phenylene ether ether ketone) and has a melting point of 270&#xb0; C. or lower.

Production method of poly (phenylene ether ether ketone)

A method for producing a cyclic polyarylene sulfide, wherein a cyclic polyarylene sulfide is produced by heating a reaction mixture which is composed of at least a linear polyarylene sulfide (a), a sulfidizing agent (b), a dihalogenated aromatic compound (c) and an organic polar solvent (d). This method for producing a cyclic polyarylene sulfide is characterized in that not less than 1.25 liters of the organic polar solvent is used per 1 mole of the sulfur content in the reaction mixture. This method enables to efficiently produce a cyclic polyarylene sulfide, more specifically cyclic oligoarylene sulfide by an economical and simple process in short time.

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Nagoya, Japan

Kohei Yamashita