Patent ID: 7683192

Claim:
A colorant compound of the formula wherein Y is a hydrogen atom or a bromine atom, n is an integer of 0, 1, 2, 3, or 4; R 1 is an alkylene group, an arylene group, an arylalkylene group, or an alkylarylene group, provided that no oxygen atom creates a linkage; X is —O— or —NR 3 —; wherein R 3 is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group; provided that when X is —NR 3 —, R 2 is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group and at least one of R 2 and R 3 is other than hydrogen and the total number of carbon atoms in R 2 +R 3 at least 18; provided that when X is O, R 2 is an alkyl group, an aryl group, an arylalkyl group, or an alkylaryl group having at least 18 carbon atoms; and provided that when X is —NR 3 —, either (1) n is 2, (2) R 1 is a substituted alkylene group, (3) R 1 is an alkylene group wherein no hetero atoms are present in the alkylene group, (4) R 1 is an arylene group, (5) R 1 is an arylalkylene group or an alkylarylene group, (6) R 3 is a hydrogen atom, (7) R 2 is a hydrogen atom, (8) R 2 is an aryl group, or (9) R 2 is an arylalkyl group or an alkylaryl group.