Patent ID: 8008528

Claim:
N-substituted diphenol compounds having the structure: wherein X 1 and X 2 are each I; y1 and y2 are each independently zero or an integer in the range of 1 to 4, and R 1 is selected from the group consisting of substituted or unsubstituted, saturated or unsaturated, straight chain or branched aliphatic groups containing up to 48 carbon atoms, substituted or unsubstituted aromatic groups containing up to 48 carbon atoms, and substituted or unsubstituted araliphatic groups containing up to 48 carbon atoms in which the aliphatic portions are straight chain or branched and saturated or unsaturated, wherein R 1 contains from 2 to 8 heteroatoms selected from O, S and N, in which two of the heteroatoms form an amide group that is N-substituted with a C 1 -C 6 alkyl group.