NOVEL DIISOCYANATE AND PRODUCTION THEREOF

Title:

NOVEL DIISOCYANATE AND PRODUCTION THEREOF

Document Type and Number:

Japanese Patent JPH02270854

Kind Code:

A

Abstract:

NEW MATERIAL:α-(3-Isocyanatophenyl)ethyl isocyanate expressed by formula I.

USE: Usable as a raw material for polyurethane resins and polyurea resins in foams, elastomers, synthetic leathers, coatings, adhesives, films, etc.

PREPARATION: α-(3-Aminophenyl)ethylamine expressed by formula II subjected to a cold heat two-stage phosgenation method for direct reaction thereof with phosgene to afford the compound expressed by formula I. Alternatively, the compound expressed by formula I is obtained using a method for phosgenating an amide hydrochloride by previously synthesizing a salt, such as hydrochloride, of the diamine expressed by formula II, suspending the resultant salt in an inert solvent and reacting the salt with phosgene.

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Inventors:

SHIKAI KIYOSHI
HASEYAMA RYUJI
HAYASHI KOZO
SASAGAWA KATSUYOSHI

Application Number:

JP9067689A

Publication Date:

November 05, 1990

Filing Date:

April 12, 1989

Export Citation:

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Assignee:

MITSUI TOATSU CHEMICALS

International Classes:

C07C263/10; C07C211/49; C07C265/04; C07C265/14; C08G18/76; (IPC1-7): C07C211/49; C07C263/10; C07C265/04

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