Mitsui Chemicals, Inc.

Mitsui Petrochemical Industries, Ltd.

Hiroshi Iwasaki

Masayasu Ishibashi

Satoshi Inoki

Nobuya Hirokane

Terunori Fujita

Shigekazu Matsui

Toshihiro Takai

Akifumi Kagayama

Hideto Matsuoka

Hiroshi Kuroda

Hiromi Ueki

Teruaki Mukaiyama

Isao Hashimoto

Hirohiko Nambu

Shoji Hiraoka

Kenichi Mizuno

Hiroyasu Ohno

Shintaro Araki

Toru Matsuyoshi

Naphthalenedicarboxylic acid particles and process for the production

Method of purifying crude naphthalenedicarboxlic acid and process for

A method for producing aryl alkyl hydroperoxides which comprises selectively oxidizing an aryl alkyl hydrocarbon having the formula: ##STR1## wherein P and Q are hydrogen or an alkyl and may be the same or different from each other; x is an integer of 1-3; and Ar is an aromatic hydrocarbon group having a valence of x, with an oxygen-containing gas in the presence of a transition metal complex which contains, as a ligand, a cyclic polyfunctional amine compound having at least three nitrogen atoms in the ring forming molecular chain or an open chain polyfunctional amine compound having at least three nitrogen atoms in the main chain of the molecule.

Method for producing aryl aklyl hydroperoxides

Method for producing aryl alkyl hydroperoxides

Method for purifying crude naphthalenedicarboxylic acid

Process for producing polyethylene naphthalate

Process for producing aromatic hydroxylic compound

A process for the preparation of peroxides by condensation reaction of a tertiary organic hydroperoxide with a tertiary alcohol, which is characterized in that zinc chloride is present as a catalyst in an amount of at least 1% by weight based on the tertiary alcohol, is disclosed. This process can be advantageously applied to continuous manufacture of peroxides, and according to this process, peroxides can be obtained in high yields.

Process for preparation of peroxides

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Yamaguchi, Japan

Hiroshi Iwasaki