Heat exchange media for the thermal cracking of carbamic acid esters

US5883291A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Dieter Schleenstein · Odenthal, DE
• Christian Rasp · Cologne, DE
• Georg Ronge · Mülheim an der Ruhr, DE
• Oswald Wilmes · Recklinghausen, DE

Key dates

• Filing date: Mar 6, 1997
• Grant date: Mar 16, 1999
• Expiry date: Mar 6, 2017

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P20/582
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Inert, thermally stable high-boiling solvents which have a defined boiling point or which boil over a narrow range are used as heat exchange media during thermal cracking of carbamic acid esters (urethane cracking).