Kabushiki Kaisha Ueno Seiyaku Oyo Kenkyujo

Kazuyuki Sakota

Ryuzo Ueno

Yoshiyuki Naito

Mitsuyuki Kishimoto

Keiji Kawata

Yasunori Nakamura

Wholly aromatic polyesters having improved mechanical properties are produced by polycondensing a raw material or raw material mixture capable of forming an aromatic polyester and not more than about 18 mole %, based on the total amount of the entire raw materials, of 2-hydroxynaphthalene-6-carboxylic acid or its derivative.

Process for producing wholly aromatic polyesters

A process for producing an aromatic hydroxy compound which comprises reacting an alkali metal salt of an aromatic sulfonic acid with an alkali metal hydroxide in a reaction medium which is an aliphatic, alicyclic or aromatic hydrocarbon, or an aromatic ether or a mixture of these.

Process for producing aromatic hydroxy compound

A process for producing a hydrozybenzonitrile, which comprises reacting a hydroxybenzoic acid ester with ammonia in the vapor phase in the presence of a boron phosphate supported catalyst.

Growing community of inventors

Kobe, Japan

Kazuyuki Sakota