公开(公告)号：US20210395567A1

公开(公告)日：2021-12-23

申请号：US17288010

申请日：2019-10-23

Applicant: Arkema France

Inventor： Quentin PINEAU ,  Jean-Yves LOZE ,  Jean-Charles DURAND ,  Masako AKAGI

IPC: C09D177/06 ,  C08G69/26 ,  C09D5/03 ,  B05D1/22 ,  B05D1/06

Abstract: A copolyamide-based powder intended for forming a coating on a surface, having an inherent viscosity of greater than or equal to 0.8 (g/100 g)−1, in which the copolyamide has a melting point of less than or equal to 160° C. Also, the use of such a powder for coating a surface, the coating having an inherent viscosity of greater than or equal to 0.8 (g/100 g)−1, and also a process for coating a surface using such a powder.

公开(公告)号：US20200255660A1

公开(公告)日：2020-08-13

申请号：US16651572

申请日：2018-10-04

Applicant: Arkema France

Inventor： Jean-Charles DURAND ,  Ornella ZOVI ,  Benoît BRULE

IPC: C08L77/06 ,  B29C64/153

Abstract: The present invention relates to a reinforced thermoplastic powder composition, comprising: at least one polyamide powder with a d50 of less than 100 μm, from 5% to 70% by weight of at least one glass fiber: with a 150 within the range from 50 to 200 μm, with an lmax of less than 450 μm, with a d50 within the range from 4 to 40 μm, with a form factor F: 150/d50 of between 5 and 15, and from 0.05% to 5% of a pulverulent flow agent with a d50 of less than 20 μm; with regard to the total weight of the composition. The present invention relates in particular to the use of said composition in 3D printing processes for manufacturing reinforced three-dimensional objects.

公开(公告)号：US20190264037A1

公开(公告)日：2019-08-29

申请号：US16344268

申请日：2017-10-24

Applicant: Arkema France

Inventor： Ornella ZOVI ,  Jean-Charles DURAND ,  Jean-Yves LOZE ,  Emilie-A DELATTRE

IPC: C09D5/03 ,  C09D7/65 ,  C09D177/00

Abstract: The present invention relates to a self-adhesive powder composition comprising: at least one polyamide; at least one ethylene vinyl alcohol copolymer; at least one hydrophobic agent; and optionally at least one filler.

公开(公告)号：US20240287262A1

公开(公告)日：2024-08-29

申请号：US18573213

申请日：2022-06-28

Applicant: ARKEMA FRANCE

Inventor： Ornella ZOVI ,  Jean-Charles DURAND

IPC: C08J3/12 ,  B29C64/314 ,  B29K45/00 ,  B29K77/00 ,  B29K105/00 ,  B29K105/16 ,  B33Y70/00 ,  C08K5/134 ,  C08K5/20 ,  C08K5/372 ,  C08K5/42

CPC classification number: C08J3/12 ,  B29C64/314 ,  B33Y70/00 ,  C08K5/1345 ,  C08K5/20 ,  C08K5/372 ,  C08K5/42 ,  B29K2045/00 ,  B29K2077/00 ,  B29K2105/0094 ,  B29K2105/16 ,  B29K2105/251 ,  B29K2995/004 ,  B29K2995/0094 ,  C08J2377/02

Abstract: The present invention relates to a polymer powder for the manufacture of articles by 3D printing, particularly by sintering, comprising a thermoplastic polymer and a particular antioxidant having improved stability and recyclability. The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.

公开(公告)号：US20220372236A1

公开(公告)日：2022-11-24

申请号：US17765725

申请日：2020-10-08

Applicant: Arkema France

Inventor： Alexis MORFIN ,  Jean-Charles DURAND

IPC: C08J5/12 ,  B33Y10/00 ,  B33Y70/10

Abstract: The invention relates to a composition for the layer-by-layer building of a three-dimensional article by sintering of the composition brought about by electromagnetic radiation, the composition comprising a semicrystalline thermoplastic polymer powder and at least one wax, the wax having a dropping point which is greater than the crystallization temperature of the semicrystalline thermoplastic polymer, said composition in addition optionally comprising a flow agent.
The invention also relates to a process for the preparation of said composition and also to its use for the layer-by-layer building of a three-dimensional article.

公开(公告)号：US20250043108A1

公开(公告)日：2025-02-06

申请号：US18719895

申请日：2022-12-22

Applicant: ARKEMA FRANCE

Inventor： Jean-Charles DURAND

IPC: C08K5/372 ,  B29C64/357 ,  B33Y40/00 ,  B33Y70/10 ,  C08G69/06 ,  C08G69/08 ,  C08J3/12 ,  C08J3/20 ,  C08K3/22 ,  C08K3/36 ,  C08K5/134 ,  C08K9/06

Abstract: The present invention relates to a polymer powder for the manufacture of articles by 3D printing, in particular by sintering, comprising a thermoplastic polymer, antioxidants, and a particular metal oxide, metal hydroxide and/or hydrotalcite, having improved thermal stability, improved recyclability and improved consistency of mechanical properties of the sintered parts.
The invention also relates to a process for preparing this powder and to the use thereof in a process for manufacturing by sintering, and to the articles manufactured from said powder.

公开(公告)号：US20220185991A1

公开(公告)日：2022-06-16

申请号：US17439865

申请日：2020-03-17

Applicant: Arkema France

Inventor： Jean-Jacques FLAT ,  Benoît BRULE ,  Ornella ZOVI ,  Jean-Charles DURAND

IPC: C08K5/5357

Abstract: Process for the preparation of flame-retarded parts by powder bed fusion, in which the powder comprises at least one polyamide and at least one flame-retardant agent of cyclic phosphonate ester type.

公开(公告)号：US20210348008A1

公开(公告)日：2021-11-11

申请号：US17282891

申请日：2019-10-11

Applicant: Arkema France

Inventor： Ornella ZOVI ,  Arnaud LEMAITRE ,  Jean-Charles DURAND

IPC: C09D11/102 ,  C08K5/37 ,  B33Y70/00

Abstract: A powder intended for 3D printing, based on thermoplastic polymer, wherein it contains at least 0.1% by weight of at least one thioether antioxidant relative to the total weight of powder. Also, a process for stabilizing the color of a powder based on polymer in a 3D printing process, in which at least 0.1% by weight of at least one thioether antioxidant is incorporated relative to the total weight of powder.