公开(公告)号：US20230227672A1

公开(公告)日：2023-07-20

申请号：US18007149

申请日：2021-07-16

Applicant: TOMITA PHARMACEUTICAL CO., LTD.

Inventor： Yohei KUSHIKI ,  Akihito BANDO ,  Nozomu HASHIMOTO ,  Naoyuki KITAMURA

IPC: C09D7/61 ,  C01B25/32 ,  C09D7/40 ,  C09D4/06 ,  C09D133/04 ,  A61L27/12 ,  A61L27/56 ,  B33Y70/00 ,  B33Y80/00

CPC classification number: C09D7/61 ,  C01B25/32 ,  C09D7/69 ,  C09D7/68 ,  C09D4/06 ,  C09D133/04 ,  A61L27/12 ,  A61L27/56 ,  B33Y70/00 ,  B33Y80/00 ,  C01P2004/62 ,  C01P2004/61 ,  C01P2006/14 ,  C01P2006/16 ,  C01P2006/12 ,  A61F2002/30962

Abstract: An object of the present invention is to provide a calcium phosphate powder that enables the preparation of a slurry for additive manufacturing with excellent dispersion stability, and enables the production of a three-dimensional additive manufacturing article with high strength, in additive manufacturing. Provided is a calcium phosphate powder, having an average particle size (D50) of 0.1 to 5.0 μm, and having a pore volume of mesopores (pore size: 2 to 50 nm) of 0.01 to 0.06 cc/g as measured by a gas adsorption method. The calcium phosphate powder has excellent dispersion stability in a slurry for additive manufacturing, and, by performing additive manufacturing using a slurry for additive manufacturing containing the calcium phosphate, it is possible to produce a three-dimensional additive manufacturing article with high strength, which is useful as an implant, such as an artificial bone.