Substituted benzotriazole phenolate salts and antioxidant compositions formed therefrom
US11078419B2 · kind B2 · utility
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Key dates
| Filing date | Feb 3, 2020 |
| Grant date | Aug 3, 2021 |
| Priority date | — |
| Expiry date | Feb 3, 2040 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R33/46
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
A class of antioxidant compositions include benzotriazole phenolate salts with substituents either ortho to the phenol hydroxide group and/or para to the phenol hydroxide group can be prepared from substituted benzotriazole phenols. The ortho substituent group can be a simple hydrocarbon, alkoxy or amino group, or the ortho substituent group can be a linking group, linking the benzotriazole phenolate to another benzotriazole phenolate group.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.