Toray Industries, Inc.

Koji Yamauchi

Shunsuke Horiuchi

Kohei Yamashita

Shu Kaiho

Daisuke Yamamoto

Akinori Kanomata

Katsushige Yamada

Masato Honma

Masateru Ito

Daijiro Tsukamoto

Masato Akahira

Keiko Ichinose

Naokichi Imai

Hideki Matsumoto

Makito Yokoe

Tomoyuki Odashima

Naoto Kumagai

Sadayuki Kobayashi

Kenji Kawamura

Atsuki Tsuchiya

Sadanori Kumazawa

Shiro Honda

Kosaku Takeuchi

Hiroyuki Ohme

Akiyoshi Tamai

Takeshi Unohara

Kenichi Utazaki

Ken Sudo

Hajime Takamura

Kazusada Takeda

Taro Yamashita

Hidenobu Takao

Masafumi Koyama

Kenji Ishitake

Yosuke Nishimura

Kaori Narimatsu

Syunsuke Horiuchi

Junji Ishibashi

Junya Suzuki

Kayo Tsuchiya

A method produces &#x3b5;-caprolactam through adipamide as an intermediate, and characteristically includes a lactamization step of reacting adipamide, formed from a material compound, with hydrogen and ammonia in the presence of a catalyst containing: a metal oxide mainly containing an oxide(s) of one or more metallic elements selected from the group consisting of metallic elements of group 5 and groups 7 to 14 in the 4th to 6th periods of the periodic table; and a metal and/or a metal compound having a hydrogenation ability.

Method for producing &#x3f5;-caprolactam

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 molding material is provided including a composite having 1 to 50 wt % of (A) a bundle of continuous reinforcing fibers and 0.1 to 40 wt % of (B) a polyarylene sulfide prepolymer or (B') a polyarylene sulfide; and 10 to 98.9 wt % of (C) a thermoplastic resin adhered to the composite; wherein the composite further has (D) a zero-valent transition metal compound or (E) a low-valent iron compound in an amount of 0.001 to 20 mol % based on the amount of sulfur atoms contained in the component (B) or (B&#x2032;). A prepreg and a method of producing a fiber-reinforced molding base material is also provided. By using the molding material according to the present invention which exhibits excellent economic efficiency and productivity, a molded article having excellent mechanical characteristics can be easily produced.

Molding material, prepreg, fiber-reinforced composite material, fiber-reinforced composite material laminate, and process for production of fiber-reinforced molding base material

A polyarylene sulfide resin composition containing nickel microparticles having an average particle diameter of 0.5 to 20 nm is produced by heating a cyclic polyarylene sulfide in the presence of at least one component selected from components (i), (ii) and (iii).

Polyarylene sulfide resin composition and method for producing same

A reactive functional group-containing polyarylene sulfide resin composition having a narrow polydispersity and a low gas generation amount is manufactured by mixing a polyarylene sulfide resin (a) and a polyarylene sulfide resin (b), wherein the polyarylene sulfide (a) has a weight reduction ratio &#x394;Wr of not higher than 0.18% under heating and an increase rate of melt viscosity of less than 1.05 times by addition of a reactive compound (c) having a reactive group relative to melt viscosity prior to addition of the reactive compound (c), and the polyarylene sulfide (b) has the weight reduction ratio &#x394;Wr of not higher than 0.18% under heating and the increase rate of melt viscosity of not less than 1.05 times by addition of the reactive compound (c) having the reactive group relative to melt viscosity prior to addition of the reactive compound (c).

Polyarylene sulfide resin composition, manufacturing method of resin composition and molded product of resin composition

A polyarylene sulfide resin composition including a polyarylene sulfide (A) and an alkaline earth metal organic carboxylate (B) in an amount of 0.001 to 10 mol % based on the formula &#x2014;(Ar&#x2014;S)&#x2014;, a repeating unit of polyarylene sulfide, wherein the polyarylene sulfide (A) has a weight average molecular weight of 10,000 or more and a weight reduction during heating that satisfies the equation &#x394;Wr=(W&#x2212;W)/W&#xd7;100&#x2266;0.18 (%), wherein &#x394;Wr is a weight reduction ratio (%) determined by a thermogravimetric analysis performed in a non-oxidizing atmosphere under normal pressure at a temperature rise rate of 20&#xb0; C./min from 50&#xb0; C. to any temperature equal to or higher than 330&#xb0; C., wherein Wis a sample weight at 100&#xb0; C., and Wis a sample weight at 330&#xb0; C.

Polyarylene sulfide resin composition and molded article comprising same

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

There is provided a production method of a cyclic polyarylene sulfide by heating and reacting a raw material mixture (a) including at least a sulfidizing agent, a dihalogenated aromatic compound and an organic polar solvent. The production method continually performs each of an operation (A) of supplying the raw material mixture (a) to a reaction mixture (b) in a reaction vessel which includes a reaction product obtained from the raw material mixture (a), an operation (B) of withdrawing part of the reaction mixture (b) from the reaction vessel, and an operation (C) of heating the reaction vessel.

Production method of cyclic polyarylene sulfide

There is provided a production method of a cyclic polyarylene sulfide from a reaction mixture including at least a sulfidizing agent (a), a dihalogenated aromatic compound (b) and an organic polar solvent (c). The production method includes: a process 1 of heating the reaction mixture having an arylene unit of not less than 0.80 mol but less than 1.05 mol per 1 mol of the sulfur content in the reaction mixture; and subsequent to the process 1, a process 2 of further causing the reaction to proceed after addition of the dihalogenated aromatic compound (b) to have the arylene unit of not less than 1.05 mol and not greater than 1.50 mol per 1 mol of the sulfur content in the reaction mixture.

A production method includes a process (I) of heating a cyclic polyarylene sulfide composition under reduced pressure and a process (II) of heating and polymerizing a cyclic polyarylene sulfide composition. This simple method allows for production of a polyarylene sulfide of the higher molecular weight and can produce a polyarylene sulfide having a narrow molecular weight distribution, low gas generation and high industrial usability. Additionally, pelletization after the process (I) can produce a cyclic polyarylene sulfide pellet having ease of conveyance, excellent molding processability, less gas generation amount and high industrial usability.

Production method of polyarylene sulfide, cyclic polyarylene sulfide pellet and production method thereof

A polyarylene sulfide includes 0.01 to 5 mol %, per mol of arylene sulfide structural units, of a function group selected from the group consisting of an amino group, a carboxyl group, a hydroxyl group, an acid anhydride group, an isocyanate group, an epoxy group, a silanol group, and an alkoxysilane group having a dispersity represented by (weight average molecular weight)/(number average molecular weight) of 2.5 or less and a weight loss ratio at 100&#xb0; C. to 330&#xb0; C. of 0.2% by weight or less when the polyarylene sulfide is subjected to thermogravimetric analysis from 50&#xb0; C. to 340&#xb0; C. at a temperature ramp-up rate of 20&#xb0; C./min under a non-oxidative atmosphere of normal pressure.

Polyarylene sulfide

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.

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Nagoya, Japan

Koji Yamauchi