Toray Fine Chemicals Co., Ltd.

Toray Industries, Inc.

Other

Haqyashi, Tamio

Jiro Nakatani

Michiya Ishikawa

Hiroaki Sakata

Hiroshi Taiko

Atsuhito Arai

Eiichi Minomiya

Tetsuya Kato

Hidetoshi Kato

Tamio Hayashi

Kenichi Yoshioka

Kazuyoshi Iwayama

Satoru Miyata

Masahiro Inohara

Koutaro Ono

Kotaro Ono

Ryota Takezawa

Tatsuhiro Nozoe

Ishikawa Michiya

An industrially excellent production method for cycloalkyl(trifluoromethyl)benzene is free of complicated steps, small in the number of steps, and high in production efficiency. Cycloalkyl(trifluoromethyl)benzene is produced by reacting a halogen-substituted trifluoromethyl benzene with magnesium metal to produce a Grignard reagent and cross-coupling the Grignard reagent with a cycloalkyl halide in the presence of an iron salt or a cobalt salt at a reaction temperature of 60&#xb0; C. to 80&#xb0; C.

Method of producing cycloalkyl(trifluoromethyl)benzene

A method efficiently and safely manufactures, on an industrial scale, a compound having an N,N-bis(2-hydroxy-3-chloropropyl)amino group. (1) an amine compound or a solution thereof, (2) epichlorohydrin or a solution thereof, and (3) an acidic compound or a solution thereof are continuously supplied to a flow reactor and reacted at a reaction temperature of 40 to 130&#xb0; C. and a liquid space velocity of 0.2 to 10 hso that a compound having an N,N-bis(2-hydroxy-3-chloropropyl)amino group is manufactured. The obtained compound having an N,N-bis(2-hydroxy-3-chloropropyl)amino group is dehydrochlorinated by reaction with an alkali so that a polyfunctional glycidylamine type epoxy compound is manufactured.

Manufacturing method for compound having N,N-bis(2-hydroxy-3-chloropropyl)amino group

A method produces a 2'-trifluoromethyl-substituted aromatic ketone and includes reacting a 2-halogen-substituted benzotrifluoride compound with magnesium metal to convert the compound to a Grignard reagent; and reacting the Grignard reagent with an acid anhydride; and then hydrolyzing the resultant to produce a 2&#x2032;-trifluoromethyl-substituted aromatic ketone. The method of producing a 2&#x2032;-trifluoromethyl-substituted aromatic ketone enables 2&#x2032;-trifluoromethyl-substituted aromatic ketone to be produced without using expensive raw materials by generating a Grignard reagent as an intermediate and reacting this Grignard reagent with an acid anhydride in an efficient productivity. The 2&#x2032;-trifluoromethyl-substituted aromatic ketone that is produced by the method of producing a 2&#x2032;-trifluoromethyl-substituted aromatic ketone can be used as fine chemicals, raw materials for pharmaceuticals and agrochemicals, raw materials for resins and plastics, electronics and information related materials, optical materials, and the like.

Method of producing 2'-trifluoromethyl group-substituted aromatic ketone

Disclosed is a carbon-fiber-reinforced composite material that is suitable for use as a construction material and exhibits high mechanical strength in harsh usage environments such as low-temperature environments and high-temperature moisture-absorbing environments. Also disclosed are an epoxy resin composition for producing the aforementioned carbon-fiber-rein-forced composite material and a prepreg obtained through the use of said epoxy resin composition. Said epoxy resin composition comprises at least the following constituents, by mass with respect to the total mass of the composition: (A) between 20% and 80% of an epoxy resin having the structure represented by formula (1); and (B) between 10% and 50% of an epoxy resin that has at least two ring structures with four or more members each and also has one amine glycidyl or ether glycidyl directly connected to a ring structure.

Epoxy resin composition for use in a carbon-fiber-reinforced composite material, prepreg, and carbon-fiber-reinforced composite material

A method produces a biphenyl derivative, with an industrially high yield and excellent productivity, by use of a raw material which is low in cost and toxicity. The method for producing the biphenyl derivative represented by Formula (1) is characterized in that a chlorine atom in a benzene derivative represented by Formula (2) reacts with magnesium metal to convert the benzene derivative into a Grignard reagent, and then the Grignard reagent is subjected to a coupling reaction in the presence of a catalyst and a dichloropropane: (wherein A represents at least one selected from alkyl groups, alkoxy groups, alkoxymethyl groups, a vinyl group, phenyl groups and chlorine, and n represents an integer of 1 to 4).

Method for producing biphenyl derivative

An epoxy compound of high-purity N,N,N',N&#x2032;-tetraglycidyl-3,4&#x2032;-diaminodiphenyl ether is produced by: an addition reaction step of reacting 3,4&#x2032;-diaminodiphenyl ether with epichlorohydrin in a polar protic solvent at 65 to 100&#xb0; C. for 12 hours or longer to form N,N,N&#x2032;,N&#x2032;-tetrakis(3-chloro-2-hydroxypropyl)-3,4&#x2032;-diaminodiphenyl ether; and a cyclization reaction step of reacting the N,N,N&#x2032;,N&#x2032;-tetrakis(3-chloro-2-hydroxypropyl)-3,4&#x2032;-diaminodiphenyl ether with an alkali compound for dehydrochlorination.

High-purity epoxy compound and method of producing thereof

A novel epoxy compound represented by the following formula and a method for producing the same are provided: wherein Rand Rare members selected from the group consisting of hydrogen, aliphatic hydrocarbon group having 1 to 4 carbon atoms, alicyclic hydrocarbon group having 3 to 6 carbon atoms, aromatic hydrocarbon group having 6 to 10 carbon atoms, halogen atom, ether group, ester group, acyl group and nitro group, n is an integer of 1 to 4, and m is an integer of 1 to 5.

Epoxy compound and manufacturing method thereof

Disclosed is a fiber-reinforced composite material that is high in heat resistance and strength while being low in the content of volatile matter that volatilizes during curing. Also disclosed are an epoxy resin composition for production thereof, and a prepreg produced from the epoxy resin composition. Specifically the invention provides an epoxy resin composition comprising: [A] an epoxy resin comprising two or more ring structures each consisting of four or more members, and at least one amine type or ether type glycidyl group directly connected to the ring structures, [B] a tri- or more-functional epoxy resin, and [C] a curing agent, and also provides a prepreg produced by impregnating reinforcing fiber with the epoxy resin composition and a fiber-reinforced composite material produced by curing the prepreg.

Epoxy resin composition for fiber-reinforced composite material, prepreg, and fiber-reinforced composite material

A process for producing biphenyl derivatives represented by formula (1), including reacting a chlorine atom of a benzene derivative represented by formula (2) with metallic magnesium to form a Grignard reagent, and coupling two molecules of the Grignard reagent with each other in the presence of a catalyst. (wherein A represents at least one member selected from the group consisting of trifluoromethyl and fluoro, and n is an integer of 1 to 4.) (wherein A represents at least one member selected from the group consisting of trifluoromethyl and fluoro, and n is an integer of 1 to 4.)

Growing community of inventors

Moriyama, Japan

Jiro Nakatani