Method and reactor for making norbornene
US6479719B1 · kind B1 · utility
6Cited by
2References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 2, 2000 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Aug 2, 2020 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY02P20/54
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
This process for the manufacture of norbornene from dicyclopentadiene (DCPD) and ethylene is characterized in that the DCPD is subjected to partial monomerization to CPD by preheating:at a temperature of 140° C. to 240° C.; andunder a pressure of 20 to 300 bar abs., before reacting it with the ethylene;with an ethylene/DCPD molar ratio of 1 to 20;at a temperature of 200° C. to 320° C.;under a pressure of 20 to 300 bar abs.; andwith a residence time of 1 to 10 minutes, under stable reaction conditions between the DCPD, the CPD and the ethylene.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.