公开(公告)号：US12071566B2

公开(公告)日：2024-08-27

申请号：US17694786

申请日：2022-03-15

Applicant: Stratasys, Inc.

Inventor： Tai Yeon Lee ,  Mike Scianna ,  Paulus Steeman ,  Marco Driessen ,  Johan Jansen ,  Sainath Vaidya

IPC: C08F2/46 ,  B22C9/04 ,  B29C64/124 ,  B33Y10/00 ,  B33Y70/00 ,  C08F2/50 ,  C08G59/22 ,  C08G59/24 ,  C08G59/68 ,  C08G61/04 ,  C08G65/18 ,  C09D7/63 ,  C09D163/00 ,  B29K105/00

CPC classification number: C09D7/63 ,  B22C9/043 ,  B29C64/124 ,  B33Y10/00 ,  B33Y70/00 ,  C08F2/50 ,  C08G59/22 ,  C08G59/24 ,  C08G59/245 ,  C08G59/687 ,  C08G65/18 ,  C09D163/00 ,  B29K2105/0005

Abstract: Radiation curable compositions for additive fabrication are described and claimed. Such compositions are particularly suited for investment casting applications, and include a cationically polymerizable component, a radically polymerizable component, a certain type of prescribed antimony-free, sulfonium salt-based cationic photoinitiator, and a free-radical photoinitiator. In other embodiments, the composition may also include a photosensitizer and/or a UV/absorber. Also described and claimed is a method for using a liquid radiation curable resin for additive fabrication with a certain type of prescribed antimony-free, sulfonium salt-based cationic photoinitiator and a certain type of prescribed photosensitizer in an investment casting process.