Patent number: 5352793
Abstract: The invention relates to sunscreen compounds of formula I ##STR1## wherein R.sup.1 is selected from alkyl, alkenyl, alkynyl substituted alkyl, substituted alkenyl, phenyl, substituted phenyl, substituted benzyl, cycloalkyl, cycloalkenyl, substituted cycloalkyl, substituted cycloalkenyl;R.sup.2 is selected from hydrogen, alkyl and alkoxy;R.sup.3 is selected from alkyl, substituted alkyl, alkenyl, substituted alkenyl, alkynyl, phenyl, benzoyl, substituted phenyl, substituted benzyl, substituted benzoyl, cycloalkyl, substituted cycloalkyl, cycloalkenyl, substituted cycloalkenyl, alkanyoyl, substituted alkanoyl, the group OROROR.sup.9 wherein R is a bivalent hydrocarbon radical and R.sup.9 is alkyl, alkenyl, phenyl benzyl, substituted phenyl, substituted benzyl;R.sup.4 is alkyl or alkoxy;n is an integer from 0 to 4; andR.sup.5 and R.sup.6 are independently selected from alkyl, alkoxy, alkanoyl, alkanoyl substituted by hydroxyl or alkoxycarbonyl.
Type:
Grant
Filed:
November 27, 1990
Date of Patent:
October 4, 1994
Assignee:
ICI Australia Operations Proprietary Limited
Inventors:
Graham Bird, Neil Fitzmaurice, Walter C. Dunlap, Bruce E. Chalker, Wickramasinghe M. Bandaranayake
Patent number: 5000946
Abstract: The invention relates to sunscreen compositions comprising an effective component at least one compound of formula I ##STR1## wherein R.sup.1 is selected from alkyl, alkenyl, alkynyl substituted alkyl, substituted alkenyl, phenyl, substituted phenyl, substituted benzyl, cycloalkyl, cycloalkenyl, substituted cycloalkyl, substituted cycloalkenyl and polymeric groups;R.sup.2 is selected from hydrogen, alkyl and alkoxy; and wherein R.sup.1 and R.sup.2 may form a carbocyclic ring which may be substituted;R.sup.3 is selected from alkyl, sustituted alkyl, alkenyl, substituted alkenyl, alkynyl, phenyl, benzoyl, substituted phenyl, substituted benzyl, substituted benzoyl, cycloalkyl, substituted cycloalkyl, cycloalkenyl, substituted cycloalkenyl, alkanyoyl, substituted alkanoyl, polymeric groups, the group OROROR.sup.9 wherein R is a bivalent hydrocarbon radical and R.sup.9 is alkyl, alkenyl, phenyl benzyl, substituted phenyl, substituted benzyl;R.sup.4 is alkyl or alkoxy; n is an integer from 0 to 4; andR.sup.
Type:
Grant
Filed:
May 26, 1988
Date of Patent:
March 19, 1991
Inventors:
Graham Bird, Neil Fitzmaurice, Walter C. Dunlap, Bruce E. Chalker, Wickramasinghe M. Bandaranayake