Benzotriazole UV absorber hydrazides
US5233047A · kind A · utility
15Cited by
15References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 1, 1991 |
| Grant date | Aug 3, 1993 |
| Priority date | — |
| Expiry date | May 1, 2011 |
Classification
- Technology area (CPC C)Chemistry; Metallurgy
- CPC primaryC08F8/30
- WIPO fieldMacromolecular chemistry, polymers
- WIPO sectorChemistry
Abstract
Hydrazide functionalized benzotrialzole and oxanilide ultraviolet absorbers (Formulas I and II) useful for stabilizing coreactive or inert polymeric compositions and novel intermediates (Formula III used to make certain types of compounds of Formula I) are disclosed and have the general formulas: ##STR1## wherein R.sup.1, R.sup.2, R.sup.3, R.sup.4, R.sup.5, R.sup.6, R.sup.7, R.sup.8, R.sup.9, X, Y, all substituents thereof, and n are set forth in the Summary of the Invention.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.