Title:
METHOD FOR REMOVING PRIMARY ALCOHOL IN ESTERIFICATION, AND METHOD FOR PRODUCING ESTER COMPOSITION, INCLUDING SAME
Document Type and Number:
WIPO Patent Application WO/2019/050280
Kind Code:
A1
Abstract:
The present invention is a method for removing a primary alcohol in esterification, in comparison to the conventional methods, which comprises: a step of reacting, in an esterification reactor comprising a liquid exit line connected to a liquid section in the reactor, a primary alcohol with a carbonyl-based compound having one or more functional groups selected from the group consisting of a carboxyl group, an ester group and an acid anhydride group; and a step of removing the primary alcohol by way of gas-liquid separation in a gas-liquid separation column, wherein the introduction of a liquid stream into the gas-liquid separation column starts at 10% to 70% of the total required time required for the gas-liquid separation. By controlling the time at which the liquid stream is discharged through the liquid exit line in the gas-liquid separation, the content of a low boiling point mixture containing an unreacted alcohol in the reactor can be reduced to a desired level within a short time, and the reactions of direct esterification and transesterification can be combined into one process, accordingly.
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Inventors:
LEE HA NA (KR)
LEE SUNG KYU (KR)
SHIN JOON HO (KR)
JUN HYOUNG (KR)
LEE SUNG KYU (KR)
SHIN JOON HO (KR)
JUN HYOUNG (KR)
Application Number:
PCT/KR2018/010381
Publication Date:
March 14, 2019
Filing Date:
September 05, 2018
Export Citation:
Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C67/54; C07C67/08; C07C69/82
Foreign References:
| KR19990087569A | 1999-12-27 | |||
| KR20050107449A | 2005-11-11 | |||
| KR20060090764A | 2006-08-16 | |||
| KR20130051453A | 2013-05-20 | |||
| KR101354141B1 | 2014-01-27 |
Other References:
MELERO, J. A. O: "Heterogeneous acid catalysts for biodiesel production: current status and future challenges", GREEN CHEM., 2009, pages 1285 - 1308, XP055580870
MUSTAFIZUR RAHMANCHRISTOPHER S. BRAZEL: "The plasticizer market: an assessment of traditional plasticizers and research trends to meet new challenges", PROGRESS IN POLYMER SCIENCE, vol. 29, 2004, pages 1223 - 1248, XP002711921, DOI: 10.1016/J.PROGPOLYMSCI.2004.10.001
N. R. JANJUA ET AL.: "Systemic Uptake of Diethyl Phthalate, Dibutyl Phthalate, and Butyl Paraben Following Whole-body Topical Application and Reproductive and Thyroid Hormone Levels in Humans", ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 42, 2008, pages 7522 - 7527
See also references of EP 3680228A4
MUSTAFIZUR RAHMANCHRISTOPHER S. BRAZEL: "The plasticizer market: an assessment of traditional plasticizers and research trends to meet new challenges", PROGRESS IN POLYMER SCIENCE, vol. 29, 2004, pages 1223 - 1248, XP002711921, DOI: 10.1016/J.PROGPOLYMSCI.2004.10.001
N. R. JANJUA ET AL.: "Systemic Uptake of Diethyl Phthalate, Dibutyl Phthalate, and Butyl Paraben Following Whole-body Topical Application and Reproductive and Thyroid Hormone Levels in Humans", ENVIRONMENTAL SCIENCE AND TECHNOLOGY, vol. 42, 2008, pages 7522 - 7527
See also references of EP 3680228A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP GROUP (KR)
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