Process for production of terephthalic dialdehyde

US4125561A · kind A · utility

Assignee

• Dynamit Nobel GmbH · DE

Inventors

• Klaus Redecker · Nuremberg, DE
• Hermann Richtzenhain

Key dates

• Filing date: Mar 15, 1977
• Grant date: Nov 14, 1978
• Expiry date: Mar 15, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C45/43
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for the production of terephthalic dialdehyde by hydrolysis of .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene, which comprises contacting .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene and steam in a reaction zone at a temperature and for a time sufficient for hydrolysis of the .alpha.,.alpha.,.alpha.',.alpha.'-tetrachloro-p-xylene to form said dialdehyde.