Kanegafuchi Kagaku Kogyo Kabushiki Kaisha

Kaneka Corporation

Shun Wachi

Yoshikuni Deguchi

Naoki Furukawa

Masanobu Tamura

Takuya Maeda

Yuusaku Ariki

Yoshimichi Yamanaka

Takahiro Ohishi

Hiroshi Tsuneishi

Hiroshi Fujisawa

Shigeru Hagimori

Kouji Noda

Hideo Kawachi

Takeshi Kawamura

Akihisa Hirota

Masakazu Isurugi

Junichi Hazama

Tsutomu Ikeda

Hiroshi Oshima

Hiromu Terazawa

John G Yates

A polymer is produced by feeding a polymerization initiator, a cationically polymerizable monomer component and a catalyst continuously to a flow-through stirring vessel reactor to thereby allow the living polymerization to initiate and feeding a reaction solution from said flow-through stirring vessel reactor to a flow-through tubular reactor continuously to thereby allow the living polymerization to proceed, said reaction solution having a conversion rate of said cationically polymerizable monomer component of not less than 1% by weight to less than 90% by weight.

Method of continuous cationic living polymerization

Process for producing chlorinated tertiary carbon-containing hydrocarbons

Processes for producing polymers having functional groups

Process for isolation of isobutylene polymer

An isobutylene is polymerized in the presence of an aromatic initiator and a catalyst under the conditions that either a chlorinated hydrocarbon or an aromatic hydrocarbon is used singly or in admixture with an aliphatic hydrocarbon so that the reaction solution has a dielectric constant of 1 to 5 and a solubility parameter of 7.5 to 9.0.

Process for the preparation of isobutylene polymer

An apparatus for powder falling type gas-solid contacting operation which comprises a hopper for feeding solid particles, a fluidizing bunker wherein the fed particles are fluidized by introduction of a fluidizing gas, a standpipe provided between the hopper and the bunker for feeding the particles from the hopper to the bunker, the lower end of the standpipe being located in the bunker, and a vertical gas-solid column connected to the bottom of the bunker for bringing the particles falling down from the bunker into contact with a gas countercurrently, in which a vertical tube is provided in the bunker so as to surround at least the lower end part of the standpipe and extend to a position below the lower end of the standpipe, whereby the height of the fluidized bed of the particles in the bunker is stably kept constant and the particles are fed from the bunker to the gas-solid column at a constant rate.

Apparatus for powder falling gas-solid contacting operation

A method for producing dichloroethane (EDC) by reacting ethylene and chlorine in a liquid reaction medium composed mainly of EDC at a temperature of not less than the boiling point of EDC measured at ordinary pressure, characterized by leading the vapor of the reaction medium generated in a reactor from the top of the reactor to a heat exchanger so as to recover and utilize the latent heat resulting from condensation of the vapor in the heat exchanger. According to the present invention, high heat utilization efficiency can be attained with advantages as compared with conventional EDC production methods.

Method for producing dichloroethane

A method for producing dichloroethane (EDC) from ethylene and chlorine in high selectivity, yield and efficiency and in high safety wherein the unreacted ethylene and oxygen included in an exhaust gas discharged from a reactor are prevented from forming an explosive gas mixture by diluting the exhaust gas with a dichloroethane vapor.

Growing community of inventors

Takasago, Japan

Shun Wachi