Tosoh Corporation

Noritaka Nagasaki

Yasushi Hara

Toshio Hironaka

Hisao Eguchi

Masashige Kubo

Takanori Miyake

Yukio Ito

Koji Kunimoto

Nobumasa Suzuki

Nobuyuki Kanai

A process for producing an ethylenamine, which comprises reacting ammonia and/or an ethylenamine with an ethanolamine in the presence of hydrogen to obtain an ethylenamine having an increased number of ethylene chains over the ammonia and/or the ethylenamine used as the starting material, wherein a catalyst comprising Ni, X and M elements wherein X is Re, Ir, Pt or Pd, and when X is Re, Ir or Pb, M is at least one rare earth element selected from the group consisting of scandium, yttrium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, and when X is Pd, M is at least one member selected from the group consisting of rare earth elements is used for the reaction.

Process for producing an ethylenamine

A process for producing an ethylenamine, which comprises reacting ammonia and/or an ethylenamine with an ethanolamine in the presence of hydrogen to obtain an ethylenamine having an increased number of ethylene chains over the ammonia and/or the ethyelenamine used as the starting material, wherein a catalyst comprising Ni and M elements wherein M is at least one rare earth element selected from the group consisting of scandium, yttrium, praseodymium, neodymium, samarium, europium, gadolinium, terbium, dysprosium, holmium, erbium, thulium, ytterbium and lutetium, is used for the reaction.

A process for producing tetrabromobisphenol A of high quality, which comprises brominating bisphenol A with bromine, wherein a solvent mixture comprising a hydrohalogenic acid and an alcohol, is used as the solvent for reaction. Also disclosed is a process for producing tetrabromobisphenol A of high quality, which comprises brominating bisphenol A with bromine in an alcohol, wherein the reaction temperature is set at a level of from -10.degree. to +20.degree. C., and water is added in an aging step.

Process for producing tetrabromobisphenol A

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Shinnanyo, Japan

Noritaka Nagasaki