Production of glass bodies from polymerisable solutions
US11993530B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 5, 2020 |
| Grant date | May 28, 2024 |
| Priority date | — |
| Expiry date | Jun 5, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C2203/26
- WIPO fieldMaterials, metallurgy
- WIPO sectorChemistry
Abstract
A method for producing a solid body of glass is described. The method comprises providing a polymerisable composition, curing the polymerisable composition to obtain a cured body, subjecting the cured body to thermal debinding to substantially remove the organic components in the cured body, and subjecting the cured body to sintering to obtain a solid body of silica glass. The polymerisable composition one or more at least partially organic polymerisable compound(s) which form a liquid composition at operating temperature and a solid source of silica as colloidal silica particles or silica glass micro-/nanoparticles dispersed in the liquid composition. The one or more at least partially organic polymerisable compounds comprises at least one organosilicon compound as a second source of silica that is liquid or solubilisable in the liquid composition at operating temperature to thereby increase the silica loading of the cured body prior to sintering. Compositions and methods for producing solid glass objects by additive manufacturing are also described.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.