Methods of using thermoplastic polyurethanes in fused deposition modeling and systems and articles thereof
US11993000B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 17, 2021 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Mar 16, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08J2375/08
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
The present invention relates to systems and methods for solid freeform fabrication, especially fused deposition modeling, as well as various articles made using the same, where the systems and methods utilize certain thermoplastic polyurethanes which are particularly suited for such processing. The useful thermoplastic polyurethanes are derived from (a) a polyisocyanate component, (b) a polyol component, and (c) an optional chain extender component where the resulting thermoplastic polyurethane has a crystallization temperature above 80° C. and retains more than 20% of its shear storage modulus at 100° C. relative to its shear storage modulus at 20° C.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.