公开(公告)号：US20240092946A1

公开(公告)日：2024-03-21

申请号：US18517323

申请日：2023-11-22

Applicant: STRATASYS, INC.

Inventor： Tai Yeon Lee

IPC: C08F2/50 ,  B29C64/129 ,  C08F222/10 ,  C08G59/24 ,  C08K5/03 ,  C08K5/55

CPC classification number: C08F2/50 ,  B29C64/129 ,  C08F222/102 ,  C08G59/24 ,  C08K5/03 ,  C08K5/55 ,  B33Y10/00

Abstract: Liquid radiation curable compositions are disclosed which are suitable for hybrid (i.e. cationic and free-radical) polymerization when processed via additive fabrication equipment utilizing sources of actinic radiation with peak spectral intensities in the UV/vis region. According to one aspect, the compositions possess a first photoinitiator that is an iodonium salt of a non-fluorinated borate anion. According to another aspect, the composition is substantially devoid of a Norrish Type I and/or Type II photoinitiator. Also disclosed are methods of creating three-dimensional parts via additive fabrication processes utilizing sources of actinic radiation with peak spectral intensities in the UV/vis region employing liquid radiation curable compositions suitable for hybrid polymerization, and the parts cured therefrom.

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.