公开(公告)号：US20160185705A1

公开(公告)日：2016-06-30

申请号：US14909775

申请日：2014-08-07

Applicant: ARKEMA FRANCE

Inventor： Bernard BERTHE ,  Bernard PEES ,  Philippe ANNOOT ,  Jean-Luc DUBOIS ,  Ornella ZOVI

IPC: C07C51/363 ,  C08G69/08 ,  C07C227/08

Abstract: A process for synthesizing a product of formula Br—(CH2)n—R by hydrobromination, by reacting: a reagent of formula (I) R1-CH═CH—R2 in which R1 and R2, identical or different, are chosen from H or an alkyl radical comprising 1 to 30 carbon atoms, which is saturated or unsaturated, linear or branched, functionalized or non-functionalized, with a molar excess of HBr relative to the reagent of formula (I), in the presence of a radical initiator, and optionally in the presence of at least one solvent, said process including a step A of mixing at least reagent I and the HBr, each of the latter arriving in the form of a flow of liquid into a mixing device dA.

Abstract translation: 通过氢溴酸合成式Br-（CH2）n-R的产物的方法，通过使式（I）的试剂R1-CH = CH-R2反应，其中R1和R2相同或不同，选自H 或包含1至30个碳原子的烷基，其在自由基引发剂存在下是饱和或不饱和的，官能化或非官能化的，具有相对于式（I）的试剂的摩尔过量的HBr ，并且任选地在至少一种溶剂的存在下，所述方法包括将至少试剂I和HBr混合的步骤A，后者各自以液体流的形式进入混合装置dA。

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.

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：US20240092014A1

公开(公告)日：2024-03-21

申请号：US17767954

申请日：2020-10-12

Applicant: Arkema France

Inventor： Emilie-Marie SOARES LATOUR ,  Ornella ZOVI ,  Arnaud LEMAITRE ,  Hervé STER

IPC: B29C64/153 ,  C08G69/08 ,  C08G69/26

CPC classification number: B29C64/153 ,  C08G69/08 ,  C08G69/26 ,  B29K2105/251

Abstract: A polyamide powder for use in a process of powder agglomeration by sintering, including at least one chain limiting agent. A process for preparing a powder including at least one chain limiting agent, wherein the chain limiter is mixed with the polyamide powder, and if need be at least one thioether antioxidant, by dry blending.