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公开(公告)号：US20210395107A1
公开(公告)日：2021-12-23
申请号：US17297565
申请日：2019-11-29
Applicant: Arkema France
Inventor： Serge Tretjak , Michel Fauconet , Andre Levray
Abstract: The present invention relates to a process for treating aqueous effluents containing formaldehyde by distillation in the presence of acetic acid, in particular to a process for treating aqueous solutions resulting from the synthesis of acrylic acid. The invention also relates to the use of the purified aqueous solution in a process for producing acrylic acid by catalytic oxidation of propylene and/or propane in steam dilution.
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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：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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Patent Agency Ranking
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：US09527791B2
公开(公告)日：2016-12-27
申请号：US14395128
申请日：2013-04-03
Applicant: Arkema France
Inventor： Jean-Francois Devaux , Michel Fauconet , Nabil Tlili
IPC: C07C51/16 , C07C45/52 , C07C51/235 , B01J8/06 , B01J19/24
CPC classification number: C07C45/512 , B01J8/065 , B01J8/067 , B01J19/2425 , B01J2208/00221 , B01J2208/00557 , B01J2208/00849 , B01J2219/00033 , B01J2219/00036 , B01J2219/00038 , C07C45/52 , C07C51/235 , Y02P20/584 , C07C47/22 , C07C57/04
Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.
Abstract translation: 本发明涉及从丙三醇生产丙烯醛和/或丙烯酸，更具体地说，涉及一种通过脱水甘油连续生产包含丙烯醛的物流的方法，包括脱水催化剂的反应和再生循环。
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公开(公告)号：US10407371B2
公开(公告)日：2019-09-10
申请号：US15354146
申请日：2016-11-17
Applicant: Arkema France
Inventor： Jean-Francois Devaux , Michel Fauconet , Nabil Tlili
IPC: B01J19/24 , B01J8/06 , C07C45/51 , C07C45/52 , C07C51/235
Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.
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公开(公告)号：US20150087861A1
公开(公告)日：2015-03-26
申请号：US14395128
申请日：2013-04-03
Applicant: Arkema France
Inventor： Jean-Francois Devaux , Michel Fauconet , Nabil Tlili
IPC: C07C45/52 , B01J19/24 , C07C51/235
CPC classification number: C07C45/512 , B01J8/065 , B01J8/067 , B01J19/2425 , B01J2208/00221 , B01J2208/00557 , B01J2208/00849 , B01J2219/00033 , B01J2219/00036 , B01J2219/00038 , C07C45/52 , C07C51/235 , Y02P20/584 , C07C47/22 , C07C57/04
Abstract: The invention relates to the production of acrolein and/or acrylic acid from glycerol, and more particularly to a method for continuous production of a stream comprising acrolein by dehydration of glycerol, comprising cycles of reaction and regeneration of a dehydration catalyst.
Abstract translation: 本发明涉及从丙三醇生产丙烯醛和/或丙烯酸，更具体地说，涉及一种通过脱水甘油连续生产包含丙烯醛的物流的方法，包括脱水催化剂的反应和再生循环。
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公开(公告)号：US09796651B2
公开(公告)日：2017-10-24
申请号：US14906292
申请日：2014-07-24
Applicant: Arkema France
Inventor： Michel Fauconet , Roger L. Roundy , Stephane Denis , Samuel M. Daniel
IPC: C07C67/08 , C07C67/327 , C07C51/09 , C07C67/54 , C07C67/62
CPC classification number: C07C67/08 , C07C51/09 , C07C67/327 , C07C67/54 , C07C67/62 , Y02P20/582 , C07C69/54 , C07C57/04
Abstract: The present invention relates to methods by which the thermal dissociation of Michael adducts present in a stream of crude acrylic acid, called “crude ester grade”, and the esterification reaction of acrylic acid present in the stream of crude acrylic acid, or generated in situ by thermal dissociation, with a light alcohol, are carried out simultaneously.
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