公开(公告)号：US20240409752A1

公开(公告)日：2024-12-12

申请号：US18700739

申请日：2022-10-07

Applicant: BASF SE

Inventor： Zhi Zhong CAI ,  Wei Zheng FAN ,  Yan Sheng LI ,  Pin Lan CHEN

IPC: C09D5/03 ,  B29B17/04 ,  B29C64/153 ,  B29K75/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y70/00 ,  C09D175/04

Abstract: This disclosure relates to thermoplastic polyurethane (TPU) powders derived from expanded TPU and/or molding part thereof, wherein the average particle size D50 of the powders is no more than 1 mm, to a 3D molding formed from the same and to a process of forming the 3D molding. The TPU powders of the present invention can be used to prepare 3D products with low density, high rebound resilience and good mechanical properties, and the TPU powders of the present invention can be derived from a wide range of sources, and the TPU powders and 3D products of the present invention can be easily reused.

公开(公告)号：US20240400856A1

公开(公告)日：2024-12-05

申请号：US18700742

申请日：2022-10-07

Applicant: BASF SE

Inventor： Wei Zheng FAN ,  Zhi Zhong CAI ,  Yan Sheng LI ,  Pin Lan CHEN

IPC: C09D175/04 ,  B29C64/153 ,  B29K75/00 ,  B33Y10/00 ,  B33Y70/00 ,  C08J9/36

Abstract: This disclosure relates to thermoplastic elastomer (TPE) powders, wherein the average particle size D50 of the TPE powders is in the range from 10 μm to 1 mm and at least one of average sphericity A and average sphericity B of TPE powders is no more than 0.6; to a process of preparing the TPE powders and to a method of preparing the 3D molding. The powders and the method according to the present invention allow to prepare a 3D molding with low density, high rebound resilience and good mechanical properties, especially a 3D molding comprising multiple areas having different properties.