Methods of making high-weight esters, acids, and derivatives thereof
US-2016362555-A1 · Dec 15, 2016 · US
A method for manufacturing terephthalate-based composition comprising applying pressure
US2021317063A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021317063-A1 |
| Application number | US-201917273279-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 18, 2019 |
| Priority date | Nov 28, 2018 |
| Publication date | Oct 14, 2021 |
| Grant date | — |
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Abstract
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Provided is a method for manufacturing a terephthalate-based composition, the method comprising:a step (S1) of flowing in a dialkyl terephthalate in which alkyl has 7 to 10 carbon atoms and a primary alcohol with a low boiling point having 4 or 5 carbon atoms into a reactor and performing transesterification of the dialkyl terephthalate and the primary alcohol with a low boiling point anda step (S2) of extracting in a reduced pressure an unreacted material and a by-product from the reactor after finishing the transesterification,wherein the step S1 comprises a pressure-applying step in which the pressure of the reactor is 1.5 to 2.5 bar.
First claim
Opening claim text (preview).
1 . A method for manufacturing a terephthalate-based composition, the method comprising: a step (S1) of flowing in a dialkyl terephthalate in which alkyl has 7 to 10 carbon atoms and a primary alcohol with a low boiling point having 4 or 5 carbon atoms into a reactor, and performing transesterification of the dialkyl terephthalate and the primary alcohol with a low boiling point; and a step (S2) of extracting in a reduced pressure an unreacted material and a by-product from the reactor after finishing the transesterification, wherein the step S1 comprises a pressure-applying step in which the pressure of the reactor is 1.5 to 2.5 bar. 2 . The method according to claim 1 , wherein the pressure-applying step occurs throughout step S1. 3 . The method according to claim 1 , wherein the step S1 further comprises a standard pressure step in which the pressure of the reactor is standard pressure, and the pressure-applying step occurs during 65% or more of a whole performing time period of the step S1. 4 . The method according to claim 3 , wherein the pressure-applying step occurs during 65% to 80% of a whole performing time period of the step S1. 5 . The method according to claim 3 , wherein the standard pressure step is applied after the pressure-applying step in step S1. 6 . The method according to claim 1 , wherein in the pressure-applying step the pressure of the reactor is 1.5 to 2.0 bar. 7 . The method according to claim 1 , wherein the dialkyl terephthalate is di(2-ethylhexyl) terephthalate. 8 . The method according to claim 1 , wherein the primary alcohol with a low boiling point is butanol. 9 . The method according to claim 1 , wherein the unreacted material is a primary alcohol with a low boiling point having 4 or 5 carbon atoms, and the by-product is a primary alcohol with a high boiling point having 7 to 10 carbon atoms, which is produced by the transesterification. 10 . The method according to claim 1 , wherein the reactor is a batch type reactor.
Assignees
Inventors
Classifications
- C07C67/02Primary
by interreacting ester groups, i.e. transesterification · CPC title
Separation; Purification; Stabilisation; Use of additives · CPC title
Controlling or regulating processes (controlling or regulating in general G05) · CPC title
by liquid-liquid treatment · CPC title
controlling the pressure · CPC title
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- What does patent US2021317063A1 cover?
- Provided is a method for manufacturing a terephthalate-based composition, the method comprising:a step (S1) of flowing in a dialkyl terephthalate in which alkyl has 7 to 10 carbon atoms and a primary alcohol with a low boiling point having 4 or 5 carbon atoms into a reactor and performing transesterification of the dialkyl terephthalate and the primary alcohol with a low boiling point anda step…
- Who is the assignee on this patent?
- Lg Chemical Ltd
- What technology area does this patent fall under?
- Primary CPC classification C07C67/02. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Oct 14 2021 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).