Low-viscosity liquid radiation curable dental aligner mold resin compositions for additive manufacturing
US9861452B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Aug 7, 2014 |
| Grant date | Jan 9, 2018 |
| Priority date | — |
| Expiry date | Mar 24, 2035 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08L63/00
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Liquid radiation curable resin compositions for additive manufacturing comprising: from about 5 to about 30 wt % of an oxetane; a (meth)acrylate component; a cationic photoinitiator; a free-radical photoinitiator; and from about 50 to about 80 wt % of an epoxy, which further comprises a cycloaliphatic epoxy component, and an epoxy component having an aromatic glycidyl ether group, wherein the majority of the epoxy is the cycloaliphatic epoxy component are described and claimed. Also described and claimed is a process for using the liquid radiation curable resins for additive manufacturing to create molds for dental aligners, and the three-dimensional molds made from the liquid radiation curable resins for additive manufacturing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.