Pyrazol(5)/pyrazolone(5)metal complexes as stabilizers for organic materials
US3975382A · kind A · utility
4Cited by
2References
7Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 14, 1975 |
| Grant date | Aug 17, 1976 |
| Priority date | — |
| Expiry date | Mar 14, 1995 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC07D231/22
- WIPO fieldOrganic fine chemistry
- WIPO sectorChemistry
Abstract
The present invention concerns novel pyrazole (5) pyrazolone (5) metal complexes of the formula ##SPC1## PA1 Wherein R.sub.1, R.sub.2, R.sub.3 and R.sub.4 are substituents and Me is a transition metal, Useful in stabilizing sensitive organic material against the degradative effect of U.V. light.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.