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Patent Searching and Data


Title:
METHOD FOR PREPARING DIESTER-BASED SUBSTANCE
Document Type and Number:
WIPO Patent Application WO/2021/060861
Kind Code:
A1
Abstract:
The present invention relates to a preparation method comprising the steps of: mixing dicarboxylic acid and a monoalcohol having 4 to 10 carbon atoms to prepare a raw material mixture (S1); and subjecting the raw material mixture to a reaction under a catalyst to obtain a production mixture containing a diester-based substance and production water (S2), wherein in step (S2), at least one of a reaction temperature (condition A), an alcohol feeding amount condition (condition B), and an inert gas feeding amount condition (condition C) is applied as a particular condition, and wherein the differentiation between the early stage of the reaction and the late stage of the reaction in conditions A to C is based on a reaction control point, which is a time point selected from time points at which the conversion rate of the reaction is 10% to 80%. A method for preparing a diester-based substance can be provided, the method being capable of achieving increased reactivity and improved energy consumption by controlling the reaction conditions on the basis of the particular conversion rate.

Inventors:
MOON JEONG JU (KR)
KIM HYUN KYU (KR)
KIM JOO HO (KR)
CHO YUN KI (KR)
JEONG SEOK HO (KR)
CHOI WOO HYUK (KR)
Application Number:
PCT/KR2020/012937
Publication Date:
April 01, 2021
Filing Date:
September 24, 2020
Export Citation:
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Assignee:
LG CHEMICAL LTD (KR)
International Classes:
C07C67/08; C07C69/80
Foreign References:
KR20140026677A2014-03-06
KR20090130042A2009-12-17
US20110301377A12011-12-08
JP2002193885A2002-07-10
KR20130101017A2013-09-12
KR20190027622A2019-03-15
KR20190027623A2019-03-15
Other References:
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
NR 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 4036075A4
Attorney, Agent or Firm:
BAE, KIM & LEE IP (KR)
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