Glass ionomer compositions and methods including water-miscible, silane-treated, nano-sized silica particles
US11304880B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 2018 |
| Grant date | Apr 19, 2022 |
| Priority date | — |
| Expiry date | Apr 12, 2039 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC03C4/0021
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Disclosed herein are curable glass ionomer compositions that include a first paste and a second paste, and methods for using the disclosed compositions. The first paste includes water, a polyacid, and a non acid-reactive filler. The second paste includes water, an acid-reactive filler; and non-aggregated, water-miscible, nano-sized silica particles having at least 25% surface coverage of the particles with a silane. The composition is essentially free of a resin. In some embodiments, the water content of the first paste and the second paste of the paste/paste GI composition disclosed herein is less than 20% by weight, based on the total weight of the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.