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：US12252455B2

公开(公告)日：2025-03-18

申请号：US17781394

申请日：2020-12-09

Applicant: ARKEMA FRANCE

Inventor： Clement Bellini ,  Sandra Maget ,  Patrice Defer

IPC: C07C213/06

Abstract: The present invention relates to a process for the continuous synthesis of heavy alkyl acrylates by a transesterification reaction using hydrozincite as a heterogeneous catalyst.

公开(公告)号：US20230002310A1

公开(公告)日：2023-01-05

申请号：US17781394

申请日：2020-12-09

Applicant: ARKEMA FRANCE

Inventor： Clement Bellini ,  Sandra Maget ,  Patrice Defer

IPC: C07C213/06

Abstract: The present invention relates to a process for the continuous synthesis of heavy alkyl acrylates by a transesterification reaction using hydrozincite as a heterogeneous catalyst.

公开(公告)号：US11485702B2

公开(公告)日：2022-11-01

申请号：US17283272

申请日：2019-09-18

Applicant: Arkema France

Inventor： Clement Bellini ,  Yves Cabon ,  Patrice Defer

IPC: C07C213/10 ,  C07C213/06

Abstract: The present invention relates to the use of a stabilizing composition comprising at least one N-oxyl compound and at least one polymerization inhibitor other than an N-oxyl compound, for inhibiting transesterification catalyst degradation in a process for the synthesis of aminoalkyl (meth)acrylates. Preferably, the transesterification catalyst is a titanium organometallic compound and the stabilising composition comprises at least one N-oxyl derivative and at least one polymerization inhibitor chosen from phenolic compounds and phenothiazine compounds in a weight ratio of between 1 and 10, preferably between 4 and 10, limits inclusive.