Cross products and co-oligomers of phenylenediamines and aromatic amines as antioxidants for lubricants
US8987515B2 · kind B2 · utility
9Cited by
21References
9Claims
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Key dates
| Filing date | Nov 20, 2012 |
| Grant date | Mar 24, 2015 |
| Priority date | — |
| Expiry date | Nov 20, 2032 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2070/02
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
Radical initiated reactions of phenylenediamines with alkylated aromatic amines produce an antioxidant mixture containing cross reaction products of the phenylenediamines and alkylated aromatic amines which are useful, for example, as antioxidants, stabilizers, and antiozonants for lubricants, electronic chemicals, rubbers, urethanes and other polymer resins, crop protection, pharmaceuticals, dyes and toners.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.