公开(公告)号：US20200172671A1

公开(公告)日：2020-06-04

申请号：US16783366

申请日：2020-02-06

Applicant: Arkema France

Inventor： Nicolas ALZONNE ,  Thierry BRIFFAUD

IPC: C08G69/04 ,  C08G69/36 ,  C08G69/28

Abstract: An industrial method for preparing a semi-aromatic copolyamide having a general formula A/10.T, wherein: A denotes a unit obtained by polycondensing a lactam or a C9-C12 amino acid; and 10.T denotes a unit obtained by polycondensing 1.10-decanediamine and terephtalic acid. The method includes a step for polycondensing the comonomers, the amino acid or the lactam, 1.10-decanediamine and terephtalic acid in the presence of at least one C1-C7 linear aliphatic acid. The level of foaming in a reactor is substantially reduced, during the polycondensation step, in relation to the level observed without C1-C7 linear aliphatic acid.

公开(公告)号：US20170321009A1

公开(公告)日：2017-11-09

申请号：US15535269

申请日：2015-12-09

Applicant: ARKEMA FRANCE

Inventor： Nicolas ALZONNE ,  Thierry BRIFFAUD

IPC: C08G69/04 ,  C08G69/36

CPC classification number: C08G69/04 ,  C08G69/28 ,  C08G69/36

Abstract: An industrial method for preparing a semi-aromatic copolyamide having a general formula A/10.T, wherein: A denotes a unit obtained by polycondensing a lactam or a C9-C12 amino acid; and 10.T denotes a unit obtained by polycondensing 1.10-decanediamine and terephtalic acid. The method includes a step for polycondensing the comonomers, the amino acid or the lactam, 1.10-decanediamine and terephtalic acid in the presence of at least one C1-C7 linear aliphatic acid. The level of foaming in a reactor is substantially reduced, during the polycondensation step, in relation to the level observed without C1-C7 linear aliphatic acid.