公开(公告)号：US20240279507A1

公开(公告)日：2024-08-22

申请号：US18571874

申请日：2022-06-08

Applicant: BASF SE

Inventor： Stephan DOHMEN ,  Elmar POESELT ,  Claus GABRIEL ,  Leander VERBELEN ,  Florian A. DEME ,  Jocelyn SALAS LAZO ,  Jean ROCHETTE

IPC: C09D175/06 ,  B29B13/10 ,  B29C64/153 ,  B29K75/00 ,  B29K105/00 ,  B29K105/12 ,  B29K105/16 ,  B29K307/04 ,  B29K309/02 ,  B29K309/08 ,  B33Y10/00 ,  B33Y70/00 ,  C09D5/03 ,  C09D7/61 ,  C09D7/63 ,  C09D7/65 ,  C09D7/80 ,  C09D175/08

CPC classification number: C09D175/06 ,  B29B13/10 ,  B33Y70/00 ,  C09D5/031 ,  C09D5/032 ,  C09D5/037 ,  C09D7/61 ,  C09D7/63 ,  C09D7/65 ,  C09D7/80 ,  C09D175/08 ,  B29C64/153 ,  B29K2075/00 ,  B29K2105/0005 ,  B29K2105/122 ,  B29K2105/16 ,  B29K2105/251 ,  B29K2307/04 ,  B29K2309/02 ,  B29K2309/08 ,  B33Y10/00

Abstract: The present invention relates to a sinter powder (SP) comprising 58.5% to 99.95% by weight of at least one thermoplastic polyurethane (A), 0.05% to 1.5% by weight of at least one flow agent (B), 0% to 5% by weight of at least one organic additive (C), 0% to 5% by weight of at least one further additive (D) and 0% to 30% by weight of at least one reinforcer (E), based in each case on the sum total of the percentages by weight (A), (B), (C), (D) and (E), wherein the thermoplastic polyurethane (A) is prepared by reacting at least one isocyanate (a), at least one isocyanate-reactive compound (b), and at least one chain extender (c), and wherein components (a), (b) and (c) each comprise not more than 15 mol-% of aromatic moieties, based on the total amount of the respective component (a), (b) and (c). The present invention further relates to a method of producing the sinter powder (SP) and to the use of the sinter powder (SP) in a three-dimensional (3D) printing process. The present invention further relates to a three-dimensional shaped article comprising the thermoplastic polyurethane (A), to a method of producing a three-dimensional shaped article and to the use of the at least one thermoplastic polyurethane (A) in a three-dimensional (3D) printing process for producing a three-dimensional shaped article to improve the energy return of the three-dimensional shaped article.

公开(公告)号：US20230257566A1

公开(公告)日：2023-08-17

申请号：US18018047

申请日：2021-07-23

Applicant: BASF SE

Inventor： Florian A. DEME ,  Jérôme GIMENEZ

IPC: C08L23/14 ,  B33Y70/10

CPC classification number: C08L23/14 ,  B33Y70/10 ,  C08L2205/03 ,  C08L2205/025

Abstract: The invention relates to 3D printable powders comprising 75-98 wt% of a polymeric matrix containing at least 90 wt % of polyolefin(s) and 2-25 wt% of at least one olefinic thermoplastic elastomer chosen from ethylene acetate elastomers, ethylene acrylate elastomers, ethylene propylene elastomers and ethylene alpha-olefin elastomers. The invention further relates to the preparation of these 3D printable powders and to their use in an additive process.