Polychromophoric heterocyclic ultraviolet stabilizers

Claim 1

A polychromophoric compound having the formula: (A).sub.x --C where A is a group having the structure ##STR15## wherein R 1 , R 2 , R 3 , R 4 and R 5 are hydrogen, chloro, bromo, fluoro, lower alkyl, cycloalkyl, phenyl, lower alkylphenyl, phenyl-substituted-phenyl, alkoxy, phenoxy, dilower alkyl substituted amino, cyano, carboalkoxy and the substituents R 1 and R 2 , R 2 and R 3 , and R 3 and R 4 , combined with the carbon atoms to which they are attached, are joined alkylene groups completing a carbocyclic ring, which ring can also be substituted with one or more of the substituents listed above for R 1 , R 2 , R 3 and R 4 ; I is the same as R 1 , R 2 , R 3 and R 4 and is present on all positions of the benzenoid ring, except the carbon atom attached to the heterocyclic ring and the carbon atom attached to the carbonyl group connecting the heterocyclic aromatic A group with the aromatic C group, at least one I substituent on one of the carbon atoms adjacent to said carbon atom attached to said carbonyl group is hydrogen and said remaining I substituents can all be the same or different; x is an integer of 1 to 4; and C is: a. an aromatic group having the formula ##STR16## where I is the same substituent as listed above and is present in all positions of the benzenoid ring except the carbon atom attached to the carbonyl group connecting the A and C moieties, and said I substituents can all be one of the substituents listed above or different listed substituents; or b. an aromatic group having the formula ##STR17##