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公开(公告)号：US20190071382A1
公开(公告)日：2019-03-07
申请号：US15765496
申请日：2016-09-26
Applicant: Arkema France
Inventor： Michel Fauconet , Sandeep Jain
IPC: C07C51/44 , C07C51/487
Abstract: A process for the recovery of polymer-grade (meth)acrylic acid, in the absence of organic solvent, from a gaseous reaction mixture comprising (meth)acrylic acid obtained by gas-phase oxidation of a precursor of the (meth)acrylic acid, the process carried out in a plant comprising at least one dehydration column and one finishing column, being characterized by the presence of at least one chemical treatment agent targeted at reducing the content of residual aldehydes. (Meth)acrylic acid obtained according to the invention meets criteria of high quality allowing it to be used in the manufacture of acrylic polymers, in particular for superabsorbents. This grade is also known as glacial acrylic acid GAA.
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公开(公告)号：US20170283358A1
公开(公告)日：2017-10-05
申请号：US15452757
申请日：2017-03-08
Applicant: Arkema France
Inventor： Sandeep Jain , Christian LACROIX
CPC classification number: C07C51/252 , C07C51/42 , C07C51/44 , G09F7/18 , G09F9/30 , G09F21/048 , G09F2007/1865 , C07C57/04
Abstract: The invention relates to the production of (meth)acrylic acid, and to implementation of a step of condensing water contained in a recycled gas effluent and/or in the air feed in a (meth)acrylic acid production process, which further includes a process for purifying a reaction mixture comprising (meth)acrylic acid without using azeotropic solvent and based on the use of two distillation columns.
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公开(公告)号：US10239816B2
公开(公告)日：2019-03-26
申请号：US15556308
申请日：2016-03-04
Applicant: Arkema France
Inventor： Sandeep Jain , Christian Lacroix , Michel Jean Fauconet
Abstract: The invention is directed to a process for recovering/purifying (meth)acrylic acid which does not use azeotropic solvent and is based on the use of two columns for purifying a reaction mixture comprising (meth)acrylic acid. The process according to the invention includes a dry vacuum pump condensation system, which makes it possible to reduce the amount of final aqueous discharges.
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Patent Agency Ranking
公开(公告)号：US10961179B2
公开(公告)日：2021-03-30
申请号：US15765496
申请日：2016-09-26
Applicant: Arkema France
Inventor： Michel Fauconet , Sandeep Jain
IPC: C07C57/04 , C07C51/44 , C08F20/06 , C07C51/487 , C07C51/46
Abstract: A process for the recovery of polymer-grade (meth)acrylic acid, in the absence of organic solvent, from a gaseous reaction mixture comprising (meth)acrylic acid obtained by gas-phase oxidation of a precursor of the (meth)acrylic acid, the process carried out in a plant comprising at least one dehydration column and one finishing column, being characterized by the presence of at least one chemical treatment agent targeted at reducing the content of residual aldehydes. (Meth)acrylic acid obtained according to the invention meets criteria of high quality allowing it to be used in the manufacture of acrylic polymers, in particular for superabsorbents. This grade is also known as glacial acrylic acid GAA.
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公开(公告)号：US12208354B2
公开(公告)日：2025-01-28
申请号：US16979735
申请日：2019-03-14
Applicant: Arkema France
Inventor： Sandeep Jain , Leonel Gomes , Alexandre Terrigeol
IPC: B01D53/02 , B01D53/047
Abstract: The present invention concerns a method of decarbonating a gas stream containing from 15% to 60% carbon dioxide, by passage of the said gas stream over a zeolitic agglomerate comprising at least one binder and at at least one zeolite, and having a mesoporous volume of between 0.02 cm3·g−1 and 0.15 cm3·g−1 and a mesoporous volume fraction of between 0.1 and 0.5, preferably between 0.15 and 0.45.
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公开(公告)号：US20210008485A1
公开(公告)日：2021-01-14
申请号：US16979735
申请日：2019-03-14
Applicant: Arkema France
Inventor： Sandeep Jain , Leonel Gomes , Alexandre Terrigeol
IPC: B01D53/02
Abstract: The present invention concerns a method of decarbonating a gas stream containing from 15% to 60% carbon dioxide, by passage of the said gas stream over a zeolitic agglomerate comprising at least one binder and at at least one zeolite, and having a mesoporous volume of between 0.02 cm3·g−1 and 0.15 cm3·g−1 and a mesoporous volume fraction of between 0.1 and 0.5, preferably between 0.15 and 0.45.
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公开(公告)号：US10029975B2
公开(公告)日：2018-07-24
申请号：US15118134
申请日：2015-02-16
Applicant: Arkema France
Inventor： Jean-Francois Devaux , Michel Fauconet , Sandeep Jain , Stephen Tlatlik
Abstract: The present invention relates to the manufacture of biobased acrylic acid from glycerol as starting material, the term “biobased acid” indicating that the acrylic acid is essentially based on a carbon source of natural origin.
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公开(公告)号：US09783479B1
公开(公告)日：2017-10-10
申请号：US15452757
申请日：2017-03-08
Applicant: Arkema France
Inventor： Sandeep Jain , Christian Lacroix
CPC classification number: C07C51/252 , C07C51/42 , C07C51/44 , G09F7/18 , G09F9/30 , G09F21/048 , G09F2007/1865 , C07C57/04
Abstract: The invention relates to the production of (meth)acrylic acid, and to implementation of a step of condensing water contained in a recycled gas effluent and/or in the air feed in a (meth)acrylic acid production process, which further includes a process for purifying a reaction mixture comprising (meth)acrylic acid without using azeotropic solvent and based on the use of two distillation columns.
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