Addition-fragmentation oligomers
US11111320B2 · kind B2 · utility
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31References
17Claims
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Key dates
| Filing date | Oct 2, 2019 |
| Grant date | Sep 7, 2021 |
| Priority date | — |
| Expiry date | Feb 27, 2040 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K3/36
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
Novel stress-reducing crosslinking oligomers that have application in dental restoratives, thin films, hardcoats, composites, adhesives, and other uses subject to stress reduction are described. The addition-fragmentation process of crosslinking results in a chain-transfer event that provides novel polymers that may be further functionalized. In addition, the addition-fragmentation oligomer comprises pendent functional groups that bond to a substrate by forming an ionic or covalent bond, or etch the substrate by chemically removing some material from the substrate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.