Asymmetrical oxalic acid diaryl amide stabilizers
US4003875A · kind A · utility
11Cited by
4References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 19, 1975 |
| Grant date | Jan 18, 1977 |
| Priority date | — |
| Expiry date | Nov 19, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC09K15/22
- WIPO fieldPharmaceuticals
- WIPO sectorChemistry
Abstract
The invention concerns specific new oxalic acid diarylamides which are characterized by an asymmetrical substitution with regard to the central oxalic amide moiety of the formula EQU --NH--CO--CO--NH-- and by substitution with one or two alkoxy, alkenyloxy, aralkenyloxy or acyloxy groups. Definite additional substituents may be present. The compounds are valuable ultraviolet stabilizers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.