An anthrapyridone composition of the formula: is disclosed, where "A" and
"B" are independently selected from substituted or unsubstituted cyclic
ketone groups having from about 10 to about 20 ring carbon atoms; "a" is
an integer having a value from 0-4, R.sup.1-R.sup.4 are monovalent
substituents; with the proviso that when "a" is 0, R.sup.1 is selected
from the group consisting of a hydrogen, an alkyl group, a secondary
amino group and an aminosulphonyl group; and R.sup.2-R.sup.4 are
substituents selected form the group consisting of a hydroxyl group, an
aliphatic group, an aromatic group, a heterocyclic group, a halogen atom,
a cyano group, a carbonyl containing group, an amino group and a
sulphonyl-containing group. The anthrapyridones are useful as thermally
stable colorants for producing colored polymer resins and articles that
require high temperature polymer processing conditions.