Hodogaya Chemical Co., Ltd.

Sueo Kanno

Yoshihiko Abe

Toshitaka Kaneshiki

Tadayoshi Haneda

Toshiyuki Endo

Sinichi Sato

Makoto Suzuki

Satoshi Maeda

Yuichi Hane

Ichiro Otsu

Ryoji Hattori

Tetsuya Kondo

A method for selectively separating 2,6-dichlorotoluene from a mixture of dichlorotoluene isomers by means of a zeolite adsorber, characterized in that a zeolite selected from the group consisting of ZSM-5 zeolite, ZSM-8 zeolite, ZSM-11 zeolite, ZSM-21 zeolite, ZSM-35 zeolite, Zeta-1 zeolite, Zeta-3 zeolite and TPZ-3 zeolite, is used as the adsorber to selectively separate 2,6-dichlorotoluene as a non-adsorbed component.

Method for adsorptive separation of dichlorotoluenes

A process for producing 2,6-dichlorobenzyl alcohol, which comprises reacting 2,6-dichlorobenzyl chloride with an acetate-forming agent to form its acetate, followed by hydrolysis to obtain 2,6-dichlorobenzyl alcohol, wherein anhydrous sodium acetate is used as the acetate-forming agent, and a quaternary ammonium salt is added as a phase transfer catalyst during the acetate-forming reaction.

Process for producing 2,6-dichlorobenzyl alcohol

Para-chlorotoluene is prepared selectively at high yield by nuclear chlorination of toluene, in the presence of a Lewis acid catalyst, and a co-catalyst comprising at least one compound selected from the group consisting of phenoxthine derivatives and highly chlorinated phenoxthine derivatives obtained by chlorinating said phenoxthine derivatives at higher degree, said phenoxthine derivatives being represented by the general formula of: ##STR1## wherein R represents methyl group or groups at the position-1 and/or position-3,

Process for the nuclear chlorination of toluene

Growing community of inventors

Koriyama, Japan

Sueo Kanno