Mooney viscosity stable brominated elastomers
US10781295B2 · kind B2 · utility
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4Claims
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Key dates
| Filing date | Dec 15, 2014 |
| Grant date | Sep 22, 2020 |
| Priority date | — |
| Expiry date | Dec 15, 2034 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/34926
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
This invention relates to a brominated elastomer composition comprising a free radical scavenger. The scavenger is present in the amount of at least about 0.05 wt % of the composition. The scavenger is added to the composition so that the Mooney viscosity of the composition does not increase by more than about 15% to about 40%, for up to about 15 days at 80° C. The scavenger can be a sterically hindered nitroxyl ether, a nitroxyl radical, or both.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.