Compositions comprising alkylated diphenylamines with improved properties
US12203045B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 16, 2021 |
| Grant date | Jan 21, 2025 |
| Priority date | — |
| Expiry date | Nov 16, 2041 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2040/25
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The present invention relates to a composition comprising alkylated diphenylamines of the structural formulas (I), (II), (III), and (IV), to industrial products such as additive blends, engine oils, and polymer compositions comprising the mixture of alkylated diphenylamines, and to the use of the mixture as an additive such in industrial products such as additive blends, engine oils and polymer compositions: wherein R is a branched C4-C16-alkyl group, and wherein the total amount of tetra-alkylated diphenylamines of the structural formula (IV) is in the range from 0.20 to 3.5 wt. %, based on the total weight of alkylated diphenylamines of the structural formula (I), (II), (III), and (IV) in the composition.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.