WO2025131819 - PROCESS FOR PRODUCTION OF BIO-ACRYLIC ACID
National phase entry is expected:
Publication Number
WO/2025/131819
Publication Date
26.06.2025
International Application No.
PCT/EP2024/085262
International Filing Date
09.12.2024
Title **
[English]
PROCESS FOR PRODUCTION OF BIO-ACRYLIC ACID
[French]
PROCÉDÉ DE PRODUCTION D'ACIDE BIO-ACRYLIQUE
Applicants **
IFP ENERGIES NOUVELLES
Inventors
ARIBERT, Nicolas
COUPARD, Vincent
GIREL, Etienne
PIGOURIER, Jérôme
Priority Data
63/611,971
19.12.2023
US
Application details
| Total Number of Claims/PCT | * |
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| Number of Drawings | * |
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International Searching Authority |
EPO
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| Recordal of a Change of the Applicant's Name/Address |
Change of Applicant's Name and Address
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| Type of Assignment |
The Standard Agent's Assignment
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| Applicant's Legal Status |
Legal Entity
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| * | |
| * | |
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| Entry into National Phase under |
Chapter I
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| Patent Delivery |
Send the Letters Patent by Courier
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| Translation |
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* The data is based on automatic recognition. Please verify and amend if necessary.
** IP-Coster compiles data from publicly available sources. If this data includes your personal information, you can contact us to request its removal.
Quotation for National Phase entry
| Country | Stages | Total | |
|---|---|---|---|
| China | Filing, Examination, Granting | 2092 | |
| EPO | Filing, Examination, Granting | 8279 | |
| Japan | Filing, Examination, Granting | 2170 | |
| South Korea | Filing, Examination, Granting | 2051 | |
| USA | Filing, Examination, Granting | 4740 |
Total:
19,332
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Abstract[English]
A process for converting a liquid feed based on hydroxypropanoic acid into bio-acrylic acid, comprising at least the following steps: a step of vaporization (a) of a liquid feed based on hydroxypropanoic acid (3), a step (b) of catalytic dehydration of the hydroxypropanoic acid-based gaseous stream (3) to form acrylic acid, and a specific recovery and purification sequence (steps c) to g)) for the bio-acrylic acid produced, to obtain a bio-acrylic acid purified in terms of propionic acid, said specific purification sequence being based in particular on a first step of azeotropic distillation of the aqueous acrylic acid effluent, making it possible to remove the propionic acid upstream of the transfer of the acrylic acid into the organic phase.[French]
L'invention concerne un procédé de conversion de charges liquides à base d'acide hydroxypropanoïque en acide bio-acrylique, comprenant au moins les étapes suivantes : une étape de vaporisation (a) d'une charge liquide à base d'acide hydroxypropanoïque (3), une étape (b) de déshydratation catalytique du flux gazeux (3) à base d'acide hydroxypropanoïque pour former de l'acide acrylique, et une séquence spécifique de récupération et de purification (étapes c) à g)) de l'acide bio-acrylique produit, pour obtenir un acide bio-acrylique purifié en termes d'acide propionique, ladite séquence spécifique de purification étant basée notamment sur une première étape de distillation azéotropique de l'effluent acide acrylique aqueux, permettant d'éliminer l'acide propionique en amont du transfert de l'acide acrylique dans la phase organique.