Mitsubishi Gas Chemical Company, Inc.

Kao Corporation

Mitsuharu Kitamura

Takashi Motoi

Manabu Hirakawa

Kinji Kato

Dai Oguro

Yoshiharu Ataka

Seiji Kita

Masashi Ogiwara

Junya Nishiuchi

Kazuyuki Fukuda

Shinichi Nagao

Gou Higashihara

Noriyuki Kato

Yoshihiro Shiokawa

Yutaka Matsuura

Hiroaki Oka

Tsuyoshi Hatakeyama

Yoshitaka Tanaka

Makoto Komatsu

Hisayuki Kuwahara

Eiichi Honda

Koichi Kida

Norio Fushimi

Takashi Kojima

Yasuaki Yoshimura

Yuichiro Satake

Go Higashihara

Susumu Fujiyama

Shinji Kotachi

Takeshi Kawai

Yoshifumi Sato

Shunichi Matsumoto

Yuiga Asai

Tomotaka Wada

Ken Sugito

Shiori Shinagawa

Tomoaki Kubota

Shinya Nagasawa

A method for producing tricyclo[5.2.1.0]decane-2-carboxylate according to the present invention is a method for producing tricyclo[5.2.1.0]decane-2-carboxylate, containing reacting tricyclo[5.2.1.0]deca-3-ene in a dilute solution containing the tricyclo[5.2.1.0]deca-3-ene with carbon monoxide in the presence of an acid catalyst, followed by reaction with an alcohol, wherein the dilute solution contains 100 parts by mass or more of a tricyclo[5.2.1.0]decane isomer mixture based on 100 parts by mass of the tricyclo[5.2.1.0]deca-3-ene, the tricyclo[5.2.1.0]decane isomer mixture contains endo-tricyclo[5.2.1.0]decane (Endo form of TCD) and exo-tricyclo[5.2.1.0]decane (Exo form of TCD), and a constituent ratio thereof (Endo form of TCD/Exo form of TCD) is greater than 1.0.

Method for producing tricyclo[5.2.1.02,6]decane-2-carboxylate

A perfume composition containing a compound represented by the following formula (1): 

Perfume composition

A polyester resin having a diol constitutional unit and a dicarboxylic acid constitutional unit, wherein 20 to 100 mol % of the diol constitutional unit is a constitutional unit derived from a diol having a dinorbornane ring; a glass transition temperature of the polyester resin is 90&#xb0; C. or higher; an amount of heat of a crystallization exothermic peak in temperature drop of the polyester resin is 5 J/g or less; and a yellow index (YI) value as measured by a reflection method according to JIS K 7103 is 10 or less.

Polyester resin

The present invention addresses the problem of providing a resin having a high Abbe number and a small difference in hygroscopic expansion coefficient with respect to a polycarbonate resin having a low Abbe number and a high refractive index. The above problem can be solved by a polycarbonate resin including structural units represented by general formula (1). In general formula (1), R represents H, CH, or CH. 

Polycarbonate resin and optical lens

A process for producing a polycarbonate resin by reacting raw materials of a bifunctional compound and diphenyl carbonate, where the bifunctional compound is an isomer mixture of:  

Bifunctional compound having norbornane skeleton and method for producing same

A method for producing a bifunctional compound of formula (3)  

A method for separating an alkyl aromatic hydrocarbon, the method having a step of adding a first diluent and an extractant having a superacid to a mixture comprising the alkyl aromatic hydrocarbon and one or more isomers thereof to carry out an acid-base extraction to thereby form a complex of the alkyl aromatic hydrocarbon with the superacid, and thereafter separating the complex from the mixture, and a step of adding an eliminating agent having a relative basicity in a range of 0.06 to 10 with respect to the alkyl aromatic hydrocarbon and a second diluent to the complex, and carrying out complex exchange of the alkyl aromatic hydrocarbon for the eliminating agent to thereby separate the alkyl aromatic hydrocarbon from the complex.

Method and apparatus for separating alkyl aromatic hydrocarbon

The present invention is able to provide a bifunctional compound represented by formula (1). (In the formula, Rrepresents COOCH, COOCH, COOCH, COOCHor CHO; and Rrepresents H, CHor CH.)

A method for producing a bifunctional compound of formula (1): where Rrepresents COOCH, COOCH, COOCH, COOCHor CHO and Rrepresents H, CHor CH, by subjecting a monoolefin of formula (2): where Rrepresents COOCH, COOCH, COOCH, COOCHor CHO and Rrepresents H, CHor CH, carbon monoxide and hydrogen gases to a hydroformylation reaction in the presence of a rhodium compound and an organic phosphorous compound. Compounds produced.

There are provided a novel aromatic aldehyde compound capable of providing an epoxy resin coating film and an epoxy resin cured material satisfying all of the excellent surface property (smoothness, gloss), drying property, water resistance, transparency and adhesion, and an epoxy resin curing agent and an epoxy resin composition containing the aromatic aldehyde compound. The aromatic aldehyde has a branched alkyl group having 10 to 14 carbon atoms.

Aromatic aldehyde, and epoxy resin curing agent and epoxy resin composition comprising the aromatic aldehyde

The alicyclic diol compound of the present invention is represented by the following formula (1). 

Alicyclic diol compound and manufacturing method thereof

The alicyclic dicarboxylic acid ester compound of the present invention is represented by the following formula (1): 

Alicyclic dicarboxylic acid ester compound and manufacturing method thereof

The present invention provides a novel carboxylic acid ester compound useful as a fragrance component or a material for a compound fragrance and a method for producing the same, and provides a fragrance composition including the carboxylic acid ester compound. The present invention also provides an acyl fluorides of a 2,4-dimethyl-bicyclo[2.2.2]octane compound and the esters thereof, useful as the raw materials (inclusive of the intermediates of organic synthesis), for example, for the medicines, agricultural chemicals, fragrances, functional resins, optical functional materials and electronic functional materials. The carboxylic acid ester compound of the present invention is a compound represented by the general formula (1). (In the formula, one of Rand Ris a methyl group and the other of Rand Ris &#x2014;COOR, and R is an alkyl group having 1 to 4 carbon atoms.)

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Kurashiki, Japan

Mitsuharu Kitamura