公开(公告)号：US20250122345A1

公开(公告)日：2025-04-17

申请号：US18568318

申请日：2022-06-08

Applicant: Stratasys, Inc.

Inventor： Franciscus Johannes Marie DERKS ,  Stijn WITTERS ,  Joseph Petronella FRIEDERICHS ,  Rudd DE GROOT

IPC: C08J3/12 ,  B29C64/153 ,  B29K67/00 ,  B29K105/00 ,  B33Y10/00 ,  B33Y70/00 ,  C08G63/06

Abstract: The present invention is directed to methods of manufacturing certain biodegradable and/or compostable biobased particulate compositions for additive manufacturing which incorporate a homopolymer or copolymer of 3-hydroxy butyric acid. Specifically, the methods of manufacturing claimed and described herein include the steps of providing a starting material comprising said 3-hydroxy butyric acid; optionally, compacting the starting material to obtain a compacted material; heating to a temperature sufficient to prevent sticking to obtaining an annealed material; and milling into a powder having specified particle size values. In addition, the present invention is directed to additive manufacturing processes utilizing the biodegradable and/or compostable biobased particulate compositions elsewhere described, along with the articles printed therefrom.

公开(公告)号：US20240294796A1

公开(公告)日：2024-09-05

申请号：US18568336

申请日：2022-06-08

Applicant: Stratasys, Inc.

Inventor： Franciscus Johannes Marie DERKS ,  Stijn WITTERS ,  Joseph Petronella FRIEDERICHS ,  Ruud DE GROOT

IPC: C09D167/04 ,  B29C64/165 ,  B29C64/314 ,  B29K67/00 ,  B29K105/00 ,  B29K105/16 ,  B33Y10/00 ,  B33Y40/10 ,  B33Y70/00 ,  C08G63/06 ,  C08K3/04 ,  C08K3/36 ,  C09D5/03 ,  C09D7/61

CPC classification number: C09D167/04 ,  B33Y70/00 ,  C08G63/06 ,  C08K3/04 ,  C08K3/36 ,  C09D5/031 ,  C09D5/037 ,  C09D7/61 ,  B29C64/165 ,  B29C64/314 ,  B29K2067/00 ,  B29K2105/16 ,  B29K2105/251 ,  B29K2995/0012 ,  B29K2995/0041 ,  B29K2995/006 ,  B29K2995/0063 ,  B29K2995/0088 ,  B29K2995/0094 ,  B33Y10/00 ,  B33Y40/10

Abstract: The present invention is directed to certain biodegradable and/or compostable biobased particulate compositions for additive manufacturing, such as those including a polyhydroxyalkanoate (PHA) powder, wherein the particulate composition and/or the PHA powder possesses (a) a free bulk density, as determined by ASTM D1895-96, of greater than 0.30 g/mL, and (b) a sinterability region of greater than 15 degrees Celsius. Also, the invention is directed to certain methods of manufacturing such biodegradable and/or compostable biobased particulate compositions useful as powdered build material for additive manufacturing processes. In addition, the present invention is directed to additive manufacturing processes utilizing the biodegradable and/or compostable biobased particulate compositions elsewhere described, along with the articles printed therefrom.