Method for obtaining cyclododecatriene by evaporation

US7959766B2 · kind B2 · utility

Assignee

• BASF SE

Inventors

• Bernd Rumpf · Hockenheim, DE
• Ortmund Lang · Quirnbach, DE
• Andrea Haunert · Mannheim, DE
• Thomas Genger · Ludwigshafen, DE
• Anton Meier · Birkenheide, DE

Key dates

• Filing date: Jun 30, 2006
• Grant date: Jun 14, 2011
• Expiry date: Jan 12, 2028

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C7/04
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Process for recovering cyclododecatriene (CDT) from a solution containing CDT and high boilers such as deactivated catalyst and polymers, which includes feeding the solution into a preheater and heating it, subsequently depressurizing it through a downstream pressure maintenance device and feeding the resulting two-phase mixture into a helical tube evaporator and there reducing the CDT content of the liquid phase by partial evaporation and discharging a gaseous product stream having an increased concentration of CDT.