Abstract:
NOVEL SUN-SCREENING AGENTS OF THE FORMULA:
X-(AR)1-CH=N-N(-R)-(AR)2-Y
WHEREIN (AR)1 AND (AR)2 REPRESENT BENZENE RINGS; X AND Y REPRESENT A MEMBER SELECTED FROM HYDROGEN, AND A CARBOXYLIC OR SULFONIC ACID SALT-FORMING CATION, AT LEAST ONE OF X AND Y BEING OTHER THAN HYDROGEN: AND R REPRESENTS AN ALIPHATIC RADICAL, PREFERABLY A LOWER ALKYL RADICAL. SUCH COMPOUNDS ARE USEFUL AS SUN-SCREENING AGENTS AS THEY ABSORB ULTRAVIOLET LIGHT IN THE REGION OF FROM ABOUT 2900 A. TO ABOUT 3500A. PHARMACEUTICAL COMPOSITIONS INCLUDING A PHARMACEUTICALLY ACCEPTABLE CARRIER AND THE ABOVE SUN-SCREENING AGENTS ARE EFFECTIVE COMPOSITIONS TO SCREEN OUT BOTH THE BURNING AND TANNING RAYS OF THE SUN SO AS TO PROVIDE EXCELLENT SUN-SCREENING PROTECTION.
Abstract:
Mixtures of cedar polyphenols and thiodipropionic acid exhibit synergistic antioxidant effects when added to animal fats and vegetable oils and foodstuffs containing these materials. The amount of the polyphenol component of the mixture should be at least equal to the amount of thiodipropionic acid therein. These cedar polyphenol-thiodipropionic acid additives greatly increase the storage life of fats and oils when added thereto in amounts of at least about 50 per million.