公开(公告)号：US20230211598A1

公开(公告)日：2023-07-06

申请号：US18008509

申请日：2021-05-21

Applicant: BASF SE

Inventor： Ulrike LICHT ,  Oliver HARTZ ,  Lionel GEHRINGER ,  Sabine BOCIEK ,  Erich RIES ,  Juergen AHLERS ,  Stephan DOHMEN

IPC: B32B43/00 ,  B32B7/12 ,  B32B5/18 ,  B32B5/24 ,  B32B5/02 ,  B32B1/08

CPC classification number: B32B43/006 ,  B32B7/12 ,  B32B5/18 ,  B32B5/245 ,  B32B5/022 ,  B32B5/026 ,  B32B1/08 ,  B32B2255/26 ,  B32B2307/748 ,  B32B2266/0292 ,  B32B2266/0278 ,  B32B2262/0276 ,  B32B2437/02 ,  B32B2250/02 ,  B32B2433/04

Abstract: A method is described for debonding a bonded article. The bonded article comprises at least two components which are bonded to one another by means of a polyurethane adhesive selected from aqueous polyurethane dispersion adhesives and polyurethane hotmelt adhesives. At least one of the components is a thermoplastic polyurethane. The components are debonded by treatment with an aqueous surfactant composition at elevated temperatures.

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.