Macromers and compositions for photocuring processes
US11639416B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 5, 2019 |
| Grant date | May 2, 2023 |
| Priority date | — |
| Expiry date | May 20, 2039 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB33Y10/00
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
Compounds and compositions are provided which are useful in additive printing, particularly additive printing techniques such as stereolithography (SLA) wherein a macromer is photopolymerized to form a manufactured article. Representative compounds comprise a polyaxial central core (CC) and 2-4 arms of the formula (A)-(B) or (B)-(A) extending from the central core, where at least one of the arms comprise a light-reactive functional group (Q) and (A) is the free-radical polymerization product from monomers selected from trimethylene carbonate (T) and ε-caprolactone (C), while (B) is the free-radical polymerization product from monomers selected from glycolide, lactide and ρ-dioxanone.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.