Model material clear composition and composition set for optical shaping
US12091526B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 25, 2022 |
| Grant date | Sep 17, 2024 |
| Priority date | — |
| Expiry date | Aug 25, 2042 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/005
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A model material clear composition comprises an ethylenically unsaturated monomer (Al) having at least one selected from the group consisting of a dicyclopentenyl group and a dicyclopentanyl group, at least one photopolymerization initiator selected from the group consisting of an acylphosphine oxide-based photopolymerization initiator and an α-hydroxyacetophenone-based photopolymerization initiator, a hindered amine-based polymerization inhibitor, and a phenolic antioxidant, and contents (% by mass) of the initiator, the polymerization inhibitor, and the antioxidant satisfy Formula (1): content of photopolymerization initiator≥content of polymerization inhibitor≥content of oxidation inhibitor, and Formula (2): 1≤√ content of photopolymerization initiator/√[(content of polymerization inhibitor×10)2+(content of antioxidant×100)2]≤800.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.