Process for preparing triisocyanates

US5633396A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Eric Bischof · Baytown, US
• J urgen Dahmer · Hanerau-Hademarschen, DE
• Andreas Flink · Dormagen, DE
• Wolfgang Krohn
• Attila Molnar · Odenthal, DE

Key dates

• Filing date: Jun 17, 1996
• Grant date: May 27, 1997
• Expiry date: Jun 17, 2016

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C263/20
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Triisocyanates are produced by gas phase phosgenation of the corresponding (cyclo)aliphatic triamines having three primary amine groups.