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Patent Searching and Data


Title:
LIQUID-LIQUID EXTRACTION METHOD FOR THE PRODUCTION OF ACRYLIC ESTERS
Document Type and Number:
WIPO Patent Application WO/2015/040298
Kind Code:
A3
Abstract:
The invention relates to a liquid-liquid extraction method, which includes: supplying a main liquid input flow containing at least one compound of interest and a supplementary compound; supplying a washing liquid flow; extracting the supplementary compound from the main liquid input flow by contact with the washing liquid flow, making it possible to collect an main liquid output flow, in which the surplus compound is depleted relative to the main liquid input flow, wherein: the main liquid input flow and the washing liquid flow have a density difference of no more than 50 kg/m3 as well as an interfacial tension of no more than 3 dynes/cm; and the extraction step is carried out in a packed contactor, the weight ratio of the washing liquid flow to the main liquid flow at the input being 0.3 to 0.5. The invention also relates to a method for producing an acrylic ester wherein the process flow is processed by means of the aforementioned liquid-liquid extraction method.

Inventors:
TRETJAK SERGE (FR)
DENIS STEPHANE (FR)
Application Number:
PCT/FR2014/052124
Publication Date:
May 26, 2016
Filing Date:
August 26, 2014
Export Citation:
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Assignee:
ARKEMA FRANCE (FR)
International Classes:
B01D11/04; C07C67/08; C07C67/58; C07C69/54
Foreign References:
EP1721886A12006-11-15
US20050107629A12005-05-19
US3821286A1974-06-28
Attorney, Agent or Firm:
BONNEL, Claudine (DRD - DPI42, rue d'Estienne d'Orves Colombes Cedex, FR)
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