Coumarin ether sun-screening compounds

Abstract

Abstract WHEREIN R1 is alkenyl, cycloalkenyl, alkadienyl, cycloalkadienyl, alkatrienyl, alkoxyalkadienyl, acyloxyalkadienyl, alkoxyalkenyl, cyclialkoxyalkenyl, aryl, alkaryl, or aralkyl and R2 is hydrogen or lower alkyl and such compounds having ultraviolet absorption maxima within the range of 2,900 A. up to about 3,400 A. The compounds wherein R2 is lower alkyl and R1 is alkadienyl or where R1 is cycloalkadienyl or cycloalkenyl are novel compounds. The use as sun-screening agents of essentially colorless, stable, odorless, nonirritating, nonsensitizing, and oilcompatible coumarin ether compounds, such compounds having the formula:

Inventors

• 👤 Ernst Theodore Theimer

Bibliographic Details