Process for the production of cyclopentene from dicyclopentadiene

US4048242A · kind A · utility

Assignee

• BAYER HEALTHCARE LLC · DE

Inventors

• Hubert Lauer · Dormagen, DE
• Norbert Schenk
• Wulf Schwerdtel

Key dates

• Filing date: May 8, 1975
• Grant date: Sep 13, 1977
• Expiry date: May 8, 1995

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y10S585/901
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

Producton of cyclopentene by splitting of dicyclopentadiene to produce cyclopentadiene and hydrogenating the cyclopentadiene to produce the cyclopentene in crude form, and distilling the crude cyclopentene to separate low boilers and high boilers therefrom and provide the cyclopentene product. The high boilers are recycled to the dicyclopentadiene splitting stage and serve to reduce resin formation in that stage. The process is particularly effective where the dicyclopentadiene has a low content of the so-called "codimers" which, if present in sufficient amount, would reduce resin formation.