JPS5629527A - Purification of unreacted isoprene and recovered solvent - Google Patents

Purification of unreacted isoprene and recovered solvent

Info

Publication number
JPS5629527A
JPS5629527A JP10362479A JP10362479A JPS5629527A JP S5629527 A JPS5629527 A JP S5629527A JP 10362479 A JP10362479 A JP 10362479A JP 10362479 A JP10362479 A JP 10362479A JP S5629527 A JPS5629527 A JP S5629527A
Authority
JP
Japan
Prior art keywords
pipe
solvent
cyclopentadiene
isoprene
fraction
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
JP10362479A
Other languages
Japanese (ja)
Other versions
JPS6225129B2 (en
Inventor
Hachiro Osato
Minoru Inuzuka
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Zeon Corp
Original Assignee
Nippon Zeon Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Zeon Co Ltd filed Critical Nippon Zeon Co Ltd
Priority to JP10362479A priority Critical patent/JPS5629527A/en
Publication of JPS5629527A publication Critical patent/JPS5629527A/en
Publication of JPS6225129B2 publication Critical patent/JPS6225129B2/ja
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To remove cyclopentadiene, in high efficiency, from a mixture of unreacted isoprene and a solvent recovered from isoprene polymerization process, by extracting a part of recovered cyclopentadiene fraction obtained by the distillation and recovery of said mixture, from the bottom of the distillation column.
CONSTITUTION: Recovered fraction obtained from the isoprene polymerization process and containing unreacted isoprene and a solvent (e.g. ≤5C aliphatic hydrocarbon), is supplied to the distillation column 2 through the pipe 1 to perform distillation, and isoprene and the solvent are obtained through the pipe 3. The side stream is extracted through the pipe 5 as gaseous state, and distilled in a distillation column 6. Purified recovery fraction is obtained through the pipe 7. The bottom fraction is recycled through the pipe 8 after the heat recovery and cooling. The concentrated cyclopentadiene fraction obtained through the pipe 9 is introduced into the solvent recovery column 10 as side stream, and cyclopentadiene is extracted through the pipe 11. The recovered solvent is taken out from the bottom and recycled through the pipe 12 to the column 6.
EFFECT: The required amount of cyclopentadiene can be removed by treating a small amount of the fraction.
COPYRIGHT: (C)1981,JPO&Japio
JP10362479A 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent Granted JPS5629527A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10362479A JPS5629527A (en) 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10362479A JPS5629527A (en) 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent

Publications (2)

Publication Number Publication Date
JPS5629527A true JPS5629527A (en) 1981-03-24
JPS6225129B2 JPS6225129B2 (en) 1987-06-01

Family

ID=14358915

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10362479A Granted JPS5629527A (en) 1979-08-16 1979-08-16 Purification of unreacted isoprene and recovered solvent

Country Status (1)

Country Link
JP (1) JPS5629527A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110102U (en) * 1984-06-25 1986-01-21 晃一 星野 automatic hair curler

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6110102U (en) * 1984-06-25 1986-01-21 晃一 星野 automatic hair curler

Also Published As

Publication number Publication date
JPS6225129B2 (en) 1987-06-01

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