Method and reactor for making norbornene

Details Method and reactor for making norbornene Method and reactor for making norbornene

C - Chemistry, Metallurgy

07

C

C07C 13/42 (2006.01) B01J 3/00 (2006.01) B01J 19/24 (2006.01) B01J 19/26 (2006.01) C07C 2/50 (2006.01) C07C 4/22 (2006.01)

Patent

CA 2312816

The invention concerns a method for making norbornene from dicyclopentadiene (DPCD) and ethylene characterised in that it consists in subjecting DCPD to partial monomerisation into CPD by pre-heating: at a temperature between 140 ·C and 240 ·C; and under pressure from 20 to 300 bars abs., before reacting it with ethylene with an ethylene/DCPD mol ratio of 1 to 20, at a temperature between 200 ·C and 320 ·C; under pressure from 20 to 300 bars abs.; and a retention time of 1 to 10 minutes, in stable reaction conditions between DCPD, CPD and ethylene.

Ce procédé de fabrication du norbornène à partir du dicyclopentadiène (DCPD) et de l'éthylène est caractérisé par le fait que l'on soumet le DCPD à une monomérisation partielle en CPD par préchauffage: à une température de 140 ~C à 240 ~C; et sous une pression de 20 à 300 bars abs., avant de le faire réagir avec l'éthylène avec un rapport molaire éthylène/DCPD de 1 à 20; à une température de 200 ~C à 320 ~C; sous une pression de 20 à 300 bar abs.; et avec un temps de séjour de 1 à 10 minutes, dans des conditions réactionnelles stables entre le DCPD, le CPD et l'éthylène.

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