公开(公告)号：US10183907B2

公开(公告)日：2019-01-22

申请号：US15762582

申请日：2016-09-07

Applicant: Arkema France

Inventor： Reinhard Linemann ,  Benoit Riflade ,  Serge Tretjak ,  Andre Levray ,  Patrice Defer

IPC: C07C67/04 ,  C07C67/54

Abstract: A process for the synthesis of acrylic acid oligomer represented by formula (I): in which n is an integer ranging from 1 to 10, wherein the process comprises the step of heating acrylic acid at a temperature from 50° C. to 200° C. in the presence of a catalyst, water and at least one polymerization inhibitor. Formula (I) where n=0 is acrylic acid, the precursor for preparing the acrylic acid oligomer.

公开(公告)号：US20180265447A1

公开(公告)日：2018-09-20

申请号：US15762582

申请日：2016-09-07

Applicant: Arkema France

Inventor： Reinhard Linemann ,  Benoit Riflade ,  Serge Tretjak ,  Andre Levray ,  Patrice Defer

IPC: C07C67/04 ,  C07C67/54

CPC classification number: C07C67/04 ,  C07C67/54 ,  C07C69/73

Abstract: A process for the synthesis of acrylic acid oligomer represented by formula (I): in which n is an integer ranging from 1 to 10, wherein the process comprises the step of heating acrylic acid at a temperature from 50° C. to 200° C. in the presence of a catalyst, water and at least one polymerization inhibitor. Formula (I) where n=0 is acrylic acid, the precursor for preparing the acrylic acid oligomer.

公开(公告)号：US10479757B2

公开(公告)日：2019-11-19

申请号：US16096305

申请日：2017-04-24

Applicant: Arkema France

Inventor： Fanny Dubut ,  Benoit Riflade ,  Sandra Maget

IPC: C07C213/10 ,  C07C213/08 ,  B01D3/10 ,  B01D3/14 ,  C07C219/08 ,  C08K5/08 ,  C08K5/17

Abstract: The invention relates to the use of 2,6,-di-tert-butyl-4-methylphenol at a moiety of 25 to 200 ppm for stabilizing N,N-dimethylaminoethyl acrylate in respect of discoloring effects. The invention also relates to an N,N-dimethylaminoethyl acrylate stabilized in said manner and to a method for producing the same.

公开(公告)号：US10752573B2

公开(公告)日：2020-08-25

申请号：US16466791

申请日：2017-12-07

Applicant: Arkema France

Inventor： Fanny Dubut ,  Marc Esch ,  Coralie Graire ,  Benoit Riflade

IPC: C07C67/03 ,  B01J19/00 ,  C07C67/02 ,  C07C69/54 ,  C07C213/06 ,  C07C213/10 ,  B01F5/06 ,  B01F5/10

Abstract: This invention relates to a process for the continuous production of a (meth)acrylic ester by transesterification reaction between a C1-C4 light alkyl (meth)acrylate, with a heavy alcohol in the presence of a catalyst, characterised in that the flows feeding the reactor are introduced through a static mixer placed on a recirculation loop of the reactor. The use of a static mixer improves the selectivity of the reaction and consequently the overall productivity of (meth)acrylic ester synthesis process.

公开(公告)号：US10457630B2

公开(公告)日：2019-10-29

申请号：US15546074

申请日：2016-01-28

Applicant: Arkema France

Inventor： Yves Cabon ,  Fanny Dubut ,  Benoit Riflade

IPC: C07C213/06 ,  C07C67/03 ,  C07C213/10 ,  C07C67/327 ,  C07C67/54 ,  C07C219/08 ,  B01D3/14 ,  C08F20/18

Abstract: The invention relates to a method for producing a (meth)acrylic ester with improved productivity, by transesterfication of a light alkyl (meth)acrylate with a heavy alcohol. The method of the invention includes the recycling of noble products recovered after the thermal treatment of heavy fractions generated during the synthesis, said thermal treatment being carried out in the presence of a dialkyl phthalate, the alkyl chain of which corresponds to that of the light alkyl (meth)acrylate. The invention applies to the production of N,N-dimethyaminoethyl acrylate from ethyl acrylate.