Multichromophoric benzotriazole ultraviolet stabilizers

Claim 1

A composition of matter comprising multichromophoric compounds having the formula: A--B--C wherein A is a group having the structure ##SPC6## wherein R 1 , r 2 , r 3 and R 4 are hydrogen, chloro, bromo, lower alkyl, cycloalkyl, phenyl, lower alkyl phenyl, phenyl-substituted-phenyl, alkoxy, cyano, carboxy and the substituents R 1 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 B group connecting the heterocyclic aromatic A group with the aromatic C group, wherein B is a linking group connecting A and C and is alkylene, phenylene, carbonyloxy, oxycarbonylalkyleneoxy, oxycarbonyl, alkyleneoxycarbonyloxy, oxyalkylenecarbonyloxy, oxycarbonyloxy, alkyleneoxy, oxyalkylene, alkyleneoxyalkyleneoxy, oxyalkylenephenylenealkyleneoxy, sulfinyldioxy, oxy(alkoxy)phosphinooxy, N-alkylamino carbonyl, N-phenylaminocarbonyl, N-alkylaminocarbonylalkyleneoxy, N-phenylaminocarbonylalkyleneoxy, N-alkylaminocarbonylamino, N,N-dialkylaminocarbonyl, N-phenylaminocarbonyl, N-alkylaminocarbonyl, N,N-diphenylaminocarbonyl, N-alkylamino, N-phenylamino, N-alkylaminoalkyleneoxy, N-phenylaminoalkyleneoxy, oxyalkyleneoxy, oxyphenyleneoxy, alkyleneaminoalkylene, phenyleneaminophenylene, phenyleneaminoalkylene and alkyleneaminophenylene; and wherein C is a hydroxybenzophenone group having the formula ##SPC7## wherein I is the same substituent as listed above and is present in all positions of the benzoid rings except the carbon atom attached to the B group connecting the A and C moieties, said B connecting group is attached to the benzoid ring in the ortho, meta or para position from the keto group of the benzophenone, and said I substituents can all be one of the substituents listed above or different listed substituents.