ISOLATION OF CYCLOPENTANE AND/OR CYCLOPENTENE

Japanese Patent JPH11315038

A

To provide an economical method for the isolation of high-purity cyclopentane.

This method comprises the following process : a low-boiling fraction with a boiling point lower than that of cyclopentene and a high-boiling fraction comprising cyclopentene and hydrocarbons with boiling points higher than that of cyclopentene are withdrawn as a 1st overhead product 2 and a 1st bottom product 3, respectively; the cyclopentene 7 is withdrawn as a 2nd overhead product from the 1st bottom product, and cyclopentane, together with hydrocarbons with boiling points higher than that of cyclopentane, is withdrawn as a 2nd bottom product 8, which, in turn, is subjected to 3rd fractional distillation to withdraw the cyclopentane 9 as a 3rd overhead product; the hydrocarbons with higher boiling points than that of cyclopentane are withdrawn as a 3rd bottom product 10, or the 1st bottom product is subjected to catalytic hydrogenation followed by fractional distillation to separate the hydrogenation product into the cyclopentane as overhead product and, as bottom product, the hydrocarbons with boiling points higher than that of the cyclopentane, thereby obtaining the aimed cyclopentane.

STUEWE ARND
WURZ ROLF DIETER
MUELLER MICHAEL
HERWIG JENS DR
GABEL CHRISTIAN DR
GRUB JOACHIM

JP5569299A

November 16, 1999

March 03, 1999

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ERDOELCHEMIE GMBH

C07C5/03; C07C7/00; C07C9/18; C07C13/10; C07C13/12; C10G7/00; C10G45/32; C10G45/44; C07C7/04; C10G65/06; C10G67/02; (IPC1-7): C07C7/04; C07C9/18; C07C13/10; C07C13/12; C10G7/00; C10G45/44; C10G67/02

JPS4981346A	1974-08-06
JPH03153636A	1991-07-01
JPH07324042A	1995-12-12
JPH02300291A	1990-12-12

Heiyoshi Odashima (1 person outside)

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