Mitsui Chemicals, Inc.

Mitsui Petrochemical Industries, Ltd.

Tsuneaki Koike

Shigekazu Matsui

Hideo Hama

Tooru Yamanaka

Koji Kawaai

Yasuhiko Suzuki

Hiroaki Tan

Toyotaro Maruyama

Chiho Hirano

Polycyclic compound, liquid crystal material consisting of the

A novel hydrazine compound represented by the formula (I) is disclosed. ##STR1## Also disclosed are a process for preparing the novel hydrazine compound comprising reacting a specific hydrazine compound and a specific acid halide, a nonlinear optical organic material comprising the hydrazine compound represented by the above formula (I), and a nonlinear optical organic element comprising the nonlinear optical organic material. The nonlinear optical organic material shows excellent nonlinear optical effect, and the material is favorably applied to nonlinear optical organic elements such as an optical wavelength conversion element and an electrooptical element.

Hydrazine compound, process for the preparation of the same, and

Growing community of inventors

Sodegaura, Japan

Tsuneaki Koike