公开(公告)号：US20170130008A1

公开(公告)日：2017-05-11

申请号：US15412644

申请日：2017-01-23

Applicant: ARKEMA FRANCE

Inventor： Karine LOYEN ,  Eric LABONNE

IPC: C08J3/12 ,  A61K8/25 ,  C08K3/36 ,  A61Q1/12 ,  A61Q1/10 ,  A61K8/02 ,  A61K8/88

CPC classification number: C08J3/12 ,  A61K8/022 ,  A61K8/0245 ,  A61K8/25 ,  A61K8/88 ,  A61K9/1694 ,  A61K47/34 ,  A61K2800/412 ,  A61K2800/652 ,  A61Q1/10 ,  A61Q1/12 ,  C08G69/08 ,  C08G69/26 ,  C08J2377/00 ,  C08J2377/02 ,  C08K3/36 ,  C08L77/00 ,  C09D5/08 ,  C09D7/65 ,  C09D7/69

Abstract: The present invention relates to a powder of polyamide PA (homopolyamide or copolyamide) derived at least partially from renewable materials, in which the particles have a nonspherical shape and a volume median diameter of less than or equal to 20 μm. The present invention also relates to a process for preparing such a powder.

公开(公告)号：US20230374217A1

公开(公告)日：2023-11-23

申请号：US18248259

申请日：2021-10-11

Applicant: ARKEMA FRANCE

Inventor： Pierrick ROGER-DALBERT ,  Jean-Yves LOZE ,  Eric LABONNE

IPC: C08G69/46 ,  C08G69/04 ,  C09D177/02 ,  C08G69/16

CPC classification number: C08G69/46 ,  C08G69/04 ,  C09D177/02 ,  C08G69/16

Abstract: The present invention relates to a process for preparing a powder composition based on polyamide(s) with an optimized yield. The process includes a step of recycling a composition based on a polyamide prepolymer having a lower Dv50, by polycondensation of a mixture comprising said composition and one or more monomers in the presence of water. The invention also relates to the powder composition obtained and to the use thereof, especially for coating metal substrates by fluidized bed dip-coating.