Title:
METHOD FOR SEPARATING POLYBUTENE
Document Type and Number:
WIPO Patent Application WO/2020/149690
Kind Code:
A1
Abstract:
The present invention relates to a method for separating a polybutene, comprising the steps of: (1) injecting, into a distillation column, a polybutene solution having a viscosity, measured by means of a rotational viscometer at 25°C, of 1-50 cp while comprising a polybutene, a halogenated hydrocarbon solvent and a nonpolar hydrocarbon solvent; (2) separating the halogenated hydrocarbon solvent and the nonpolar hydrocarbon solvent at the upper part of the distillation column, and separating, at the lower part thereof, a polybutene solution having a viscosity of 10-150 cp while comprising the polybutene and the nonpolar hydrocarbon solvent; and (3) separating the nonpolar hydrocarbon solvent and the polybutene from the polybutene solution separated at the lower part of the distillation column in step (2).
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Inventors:
HWANG WOO SUNG (KR)
LEE JEONG SEOK (KR)
KIM WON HEE (KR)
KIM HYE MI (KR)
CHOI GYEONG SHIN (KR)
JO DONG HYUN (KR)
LEE JEONG SEOK (KR)
KIM WON HEE (KR)
KIM HYE MI (KR)
CHOI GYEONG SHIN (KR)
JO DONG HYUN (KR)
Application Number:
PCT/KR2020/000851
Publication Date:
July 23, 2020
Filing Date:
January 17, 2020
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C08F6/12; C08F6/00; C08F10/08
Domestic Patent References:
WO2015016577A1 | 2015-02-05 |
Foreign References:
KR20080056245A | 2008-06-20 | |||
KR20170074658A | 2017-06-30 | |||
JP2005530915A | 2005-10-13 | |||
KR20050016627A | 2005-02-21 |
Other References:
See also references of EP 3913006A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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