Tosoh Corporation

Tosoh Finechem Corporation

Takumi Kagawa

Hideo Sakka

Kouji Kawabata

Takuya Miyata

Kenji Tsuzuki

Norihisa Kondo

Junji Inanaga

Takashi Morooka

Hiroyuki Watanabe

Kiyotaka Oyama

Masashige Kubo

Keiji Itabashi

Hideyuki Mimura

Mikio Ito

Fumio Okisaki

Hiroshi Matsuo

Kimitaka Kuma

Kenji Koyama

Takao Matsuba

Hideki Miyauchi

Manabu Yanase

Akinori Tanaka

Toshio Naka

Takuya Miyama

Takeshi Kambara

Koji Kawabata

Syunji Aman

Noriyuki Kasai

Nobuhiro Fujita

Provided is a method of manufacturing a trifluoropyruvyl fluoride dimer, including a reaction step of reacting hexafluoropropylene oxide and aldehyde.

Aldehyde adduct of hexafluoropropylene oxide, method of manufacturing trifluoropyruvyl fluoride dimer and method of manufacturing perfluoro(2,4-dimethyl-2-fluoroformyl-1,3-dioxolane)

Optically active maleimide derivatives of the formula: (where the various substituents are as defined in the description) are used as separating media for separating optical isomers and geometrical isomers such as by high performance liquid chromatography.

Optically active polymaleimide derivatives and process for their production

Optically active maleimide derivatives, optically active polymaleimide derivatives, process for their production, separating media comprising the optically active polymaleimide derivatives and method of separating optically active compounds using them

An optically active epoxyenone derivative of the following formula (1): wherein Ris a methyl group, an ethyl group or a Cbranched, linear or cyclic alkyl group, and Ris a phenyl group, a substituted phenyl group or a tert-butyl group.

Optically active epoxy compounds and processes for their production

Optically active fluorine-containing compounds of the formula (1):or of formula (2):are used for producing optically active 3,3,3-trfluoro-2-hydroxy-2-methylpropionic acids.

Optically active fluorine-containing compounds and processes for their production

A complex catalyst for asymmetric epoxidation of enones, containing an optically active binaphthol, lanthanum triisopropoxide, triphenylphosphine oxide substituted with electron withdrawing groups in the parapositions of the phenyl groups, and cumene hydroperoxide or tert-butyl hydroperoxide.

Catalyst for asymmetric epoxidation of enones and process for producing optically active epoxide employing it

Optically active epoxypropionate derivative, intermediate thereof and processes for their production

A separating agent that serves as an optical resolution agent is composed of a novel, useful optically active polymer. The separating agent is obtained through anionic polymerization of a novel maleimide and serves to separate optically active compounds.

OPTICALLY ACTIVE MALEIMIDE DERIVATIVES, OPTICALLY ACTIVE POLYMALEIMIDE DERIVATIVES, PRODUCTION METHOD THEREOF, SEPARATING AGENT USING THE SAME DERIVATIVE, AND METHOD FOR SEPARATING OPTICALLY ACTIVE COMPOUNDS USING THE SAME AGENT

A complex catalyst for asymmetric epoxidation of enones containing an optically active binaphthol, lanthanum triisopropoxide, triphenylphosphine oxide substituted with electron withdrawing groups in the parapositions of the phenyl groups, and cumene hydroperoxide or tert-butyl hydroperoxide.

The subject of the invention is to provide a new high-performance flame retardant having excellent flame resistant effect and smoke-suppressing effect and generating no hazardous gas, and a new flame retardant resin-composition used it. As a means for solution, a flame retardant comprising ethylenediamine-containing zinc phosphate and other phosphorus-containing compound is formulated in amounts of 10 to 200 parts by weight to 100 parts by weight of resin.

Flame retardant and flame retardant resin composition formulated with

Brominated p-cumylphenol represented by the formula (1) described hereinafter and derivative thereof represented by the formula (2) described hereinabove, process for the preparation of the same, and flame-retardant resin compositions containing the same, are disclosed. Those compounds are useful flame retardant, and can be blended with various thermosetting resins or thermoplastic resins to obtain flame retardant resin compositions.

Brominated p-cumylphenol flame-retardants for resin composition

Processes for producing optically active ester derivatives are disclosed. According to the present invention an optically active aryloxyphenoxy propionate derivative is produced by reacting a chlorinated heterocyclic aromatic compound with (2R)-2-(4-hydroxyphenoxy)propionic acid tetrahydrofurfuryl ester in an anhydrous solvent in the presence of a base. According to the present invention, an optically active propionate derivative of the formula [I] ##STR1## (wherein R represents hydrogen or 3-chloro-5-trifluoromethyl-2-pyridyl group) is produced by reacting a corresponding optically active methyl propionate derivative with tetrahydrofurfuryl alcohol, or by reacting a corresponding optically active propionic acid derivative with tetrahydrofurfuryl alcohol, or by reacting (2S)-tetrahydrofurfuryl 2-chloropropionate with a corresponding phenol derivative in specific conditions.

Process of producing optically active propionic acid ester derivatives

A process of producing 2-(4'-hydroxyphenoxy)-3-chloro-5-trifluoromethylpyridine with high efficiency, which is suited for industrial scale production is disclosed. In the process of the present invention, hydroquinone, a dehydrohalogenating agent in the amount of 0.10-0.70 equivalent of the hydroquinone, and a mixed solvent of a polar aprotic solvent and an aromatic hydrocarbon solvent are mixed. The resulting mixture is then heated to reflux at atmospheric pressure to dehydrate the mixture. Then 2,3-dichloro-5-trifluoromethylpyridine in the amount of 0.20-0.95 equivalent of the dehydrohalogenating agent is added to the mixture, and the resulting mixture is allowed to react at a temperature of 100.degree.-170.degree. C.

Process for producing

A 4,4'-bis(phthalimido)diphenyl sulfone compound having the formula: ##STR1## wherein X is a halogen atom, k=0 to 4, l=0 to 4, m=0 to 4 and n=0 to 4, provided k+l+m+n&gt;1.

Growing community of inventors

Shinnanyo, Japan

Takumi Kagawa