公开(公告)号：US20240279507A1

公开(公告)日：2024-08-22

申请号：US18571874

申请日：2022-06-08

申请人： BASF SE

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

IPC分类号： 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分类号： 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

摘要： 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：US20230279237A1

公开(公告)日：2023-09-07

申请号：US18019254

申请日：2021-07-27

申请人： BASF SE

发明人： Leander VERBELEN ,  Rajan HOLIMANN ,  Jean ROCHETTE ,  Frank SCHAEFER ,  Viktor FISCHER ,  Andre METZGER ,  Sinan KURT

IPC分类号： C09D5/03 ,  C09D7/61 ,  C09D7/63 ,  C09D7/80 ,  C09D175/04

CPC分类号： C09D5/037 ,  C09D5/031 ,  C09D7/61 ,  C09D7/63 ,  C09D7/80 ,  C09D175/04 ,  C08K13/04

摘要： The present invention relates to a sinter powder (SP) comprising 59.5% to 99.85% by weight of at least one thermoplastic polyurethane (A), 0.05% to 0.5% by weight of at least one flow agent (B), 0.1% 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). The present invention further relates to a method of producing a shaped body by sintering the sinter powder (SP), to a shaped body obtainable by the method of the invention, and to the use of at least one flow agent (B) and at least one organic additive (C) in a sinter powder (SP) to improve the flowability and coalescence of the sinter powder (SP). The present invention further relates to the use of the sinter powder (SP) in a sintering method, and to a method of producing the sinter powder (SP).