Abstract: The invention provides UV-absorbing compounds of formula (I) ##STR1## and compositions, including sunscreens, containing compounds of formula (I).

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.

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.

Abstract: The invention relates to a process for the preparation of a compound of formula I ##STR1## R is alkyl, and X is bromine or iodine which process comprises: reacting a compound of formula II in a two phase system, said system comprising an aqueous phase and an organic phase comprising a water immiscible solvent, with an acylating agent of formula III or IV in the presence of a base catalyst.

Abstract: A pharmaceutical composition comprising the analgesic and anti-inflammatory agent 2-(2-fluoro-4-biphenylyl)propionic acid or a pharmaceutically acceptable salt thereof and certain esters of natural vegetable oil fatty acids, provides a rapid release of 2-(2-fluoro-4-biphenylyl)propionic acid into the body, and hence a very rapid analgesic and anti-inflammatory effect.

Abstract: A method and apparatus for the separation of gases by preferential adsorption of at least one of the gases in which at least three adsorption zones are used, at least two of which are arranged in series to form the separation zone while at least one other is being regenerated for re-use in the separation zone, and in which periodically a fresh zone is added to the end of the separation section from which the product gas is recovered and the zone forming the first zone of the separation section is removed for regeneration whereby each zone is successively incorporated into the separation section and subsequently removed from it and regenerated ready for reincorporation into the separation section. Improved utilisation of adsorbent and reduced loss of product gas for regeneration purposes is thereby achieved without loss of product purity.

Abstract: A method and apparatus for the separation of gases by preferential adsorption of at least one of the gases in which at least three adsorption zones are used, at least two of which are arranged in series to form the separation zone while at least one other is being regenerated for re-use in the separation zone, and in which periodically a fresh zone is added to the end of the separation section from which the product gas is recovered and the zone forming the first zone of the separation section is removed for regeneration whereby each zone is successively incorporated into the separation section and subsequently removed from it and regenerated ready for reincorporation into the separation section. Improved utilization of adsorbent and reduced loss of product gas for regeneration purposes is thereby achieved without loss of product purity.