Latent light stabilizers
US5597854A · kind A · utility
65Cited by
25References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 9, 1995 |
| Grant date | Jan 28, 1997 |
| Priority date | — |
| Expiry date | Nov 9, 2015 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S430/132
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The invention relates to compounds of the formula I ##STR1## in which n is 1 or 2, A is CH or a nitrogen atom, and the other radicals R.sup.1 to R.sup.25 are as defined in claim 1. The compounds of the formula I can advantageously be employed for stabilizing organic material against the harmful effect of light, oxygen and/or heat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.