Alkylated PANA and DPA compositions
US8030259B2 · kind B2 · utility
6Cited by
6References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 23, 2005 |
| Grant date | Oct 4, 2011 |
| Priority date | — |
| Expiry date | Feb 24, 2028 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC10N2030/12
- WIPO fieldBasic materials chemistry
- WIPO sectorChemistry
Abstract
The invention relates to a composition comprising a mixture of alkylated N-α-naphthyl-Nphenylamine (PANA) and alkylated diphenylamine (DPA), the product obtainable by alkylating PANA or a mixture of PANA and DPA with alkenes and the process for alkylating PANA or a mixture of PANA and DPA with alkenes. The compositions according to the present invention have an outstanding anti-oxidative action, which can be demonstrated by established test methods.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.