SYNTHESIS AND CHARACTERIZATION OF FLUORINE CON TAINING ULTRAVIOLET RADIATION ABSORBERS.
Abstract
A series of fluoro and trifluoromethyl sub stituted 2-hydroxy-4-methoxybenzophenones was synthesized in order to ascertain the effect of such substitution on the (a) spectral properties, and (b) evaporation rates as compared to 2-hydroxy-4-methoxybenzophenone, a commerically available and widely used ultraviolet absorber. Three of the six compounds chosen for the most intensive study were less volatile than either 2-hydroxy-4-methoxybenzophenone or 2,4-dihydroxy benzophenone, and three were more volatile. The infrared, ultraviolet and nuclear magnetic resonance spectra of these compounds were ob tained and are discussed. The three new ultra violet absorbers, 2-hydroxy-4-methoxy-2'-tri fluoromethylbenzophenone, 2-hydroxy-4-methoxy 3'-fluorobenzophenone, and 2-hyd-methoxy 4'-fluorobenzophenone, with low evaporation rates have ultraviolet absorption spectra similar to 2-hydroxy-4-methoxybenzophenone. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1963
- Accession Number
- AD0416633
Entities
People
- Don N. Ray
Organizations
- Denver Research Institute