Benzofuranone derivatives and application of the same
US8840810B2 · kind B2 · utility
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3References
12Claims
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Key dates
| Filing date | Aug 24, 2011 |
| Grant date | Sep 23, 2014 |
| Priority date | — |
| Expiry date | Mar 21, 2033 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/1535
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to the antioxidant compounds which are synthesized or derived from benzofuranone compound and benzoic acid compound. The antioxidant compound with remarkable heat resistance possesses carbon-centered radical quencher and primary antioxidant synergism. It can be use as additive for polymer to enhance its stability of melting flow and color.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.