Organic compounds
US3936479A · kind A · utility
6Cited by
8References
26Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 4, 1973 |
| Grant date | Feb 3, 1976 |
| Priority date | — |
| Expiry date | May 4, 1993 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08K5/41
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
The present invention concerns benzophenone compounds of the formula: ##SPC1## Wherein PA1 R.sub.1, r.sub.2, r.sub.3 and R.sub.4 are hydrogen or substituents, e.g. alkyl, PA1 X is a mono-, di- or trivalent radical and PA1 n is an integer 1, 2 or 3. The compounds are useful as U.V. stabilizers for, for example, plastics materials.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.