Kaneka Corporation

Takeshi Kawamura

Masayuki Fujita

Hiroshi Iwakiri

Hidetoshi Odaka

Ryotaro Tsuji

Shun Wachi

Hiroshi Tsuneishi

Takahiro Ohishi

Yousuke Asai

Akihisa Hirota

Chiho Yoshimi

Takuya Maeda

Susumu Kyotani

Kenji Kuroda

Hajime Harada

A method wherein the separability between a polyether phase and a water phase is improved when a water-soluble compound is extracted and removed from a polyether containing the water-soluble compound with water is provided. The method comprises producing a polyether including a step of extracting and removing a water-soluble compound from a polyether containing the water-soluble compound with water, wherein the step includes at least an operation of separating a water phase from a polyether phase at a temperature of 50&#xb0; C.

Method for producing polyether

The present invention relates to a simple method for efficiently producing aromatic-substituted chlorinated hydrocarbons, for example, high-purity cumyl chloride (1,4-bis(1-chloro-1-methylethyl)benzene, p-DCC) that can be used as an initiator for cationic polymerization. A corresponding tertiary alcohol such as 1,4-bis(1-hydroxy-1-methylethyl)benzene is mixed with aqueous hydrochloric acid and subjected to stirring, and then the resulting organic layer is brought into contact with a hydrogen chloride gas to produce high-quality aromatic-substituted chlorinated hydrocarbon in high yield. Furthermore, in order to purify a mixture containing a chlorinated hydrocarbon compound, the mixture being produced by reaction between an aqueous solution of a metal hypochiorite and a protonic acid, the mixture is allowed to react with an aqueous alkaline solution to form an alcohol compound. Then, a solid is isolated by solid-liquid separation and chlorinated again with the aqueous hydrochloric acid. As a result, a high-purity chlorinated hydrocarbon compound is produced in high yield.

Method for producing chlorinated hydrocarbon having chlorinated tertiary carbon

Method of producing crosslinkable silyl group-containing polyoxyalkylene polymers

Process for producing chlorinated tertiary carbon-containing hydrocarbons

Growing community of inventors

Takasago, Japan

Takeshi Kawamura