Azo pyridone colorants

A compound of the formula

• wherein (A) R3 is a linear alkyl group of the formula —(CH2)cCH3 wherein c is an integer of 0, 1, 2, 3, 4, 5, 6, 7, 8, or 9;
• (B) Z is (i) a hydrogen atom, (ii) a halogen atom, (iii) a nitro group, (iv) an alkyl group, (v) an aryl group, (vi) an arylalkyl group, (vii) an alkylaryl group, (viii) a group of the formula
• wherein R70 is an alkyl group, an aryl group, an arylalkyl group, an alkylaryl group, an alkoxy group, an aryloxy group, an arylalkyloxy group, an alkylaryloxy group, a polyalkyleneoxy group, a polyaryleneoxy group, a polyarylalkyleneoxy group, a polyalkylaryleneoxy group, a heterocyclic group, a silyl group, a siloxane group, a polysilylene group, or a polysiloxone group, (ix) a sulfonyl group of the formula —SO2R80 wherein R80 is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, an alkylaryl group, an alkoxy group, an aryloxy group, an arylalkyloxy group, an alkylaryloxy group, a polyalkyleneoxy group, a polyaryleneoxy group, a polyarylalkyleneoxy group, a polyalkylaryleneoxy group, a heterocyclic group, a silyl group, a siloxane group, a polysilylene group, or a polysiloxane group, or (x) a phosphoryl group of the formula —PO3R90 wherein R90 is a hydrogen atom, an alkyl group, an aryl group, an arylalkyl group, an alkylaryl group, an alkoxy group, an aryloxy group, an arylalkyloxy group, an alkylaryloxy group, a polyalkyleneoxy group, a polyaryleneoxy group, a polyarylalkyleneoxy group, a polyalkylaryleneoxy group, a heterocyclic group, a silyl group, a siloxane group, a polysilylene group, or a polysiloxane group;
• and (C) either (1) X is an oxygen atom, R1 is
• wherein q is an integer of from about 10 to about 15, p is an integer of from 0 to about 3, and the sum of p+q=15,
• or
• —(CH2)17CH3
• and R2 is
• —CH2CH3,
• —(CH2)3CH3,
• —(CH2)7CH3,
• —(CH2)9CH3,
• —(CH2)11CH3,
• —(CH2)13CH3,
• —(CH2)15CH3,
• —(CH2)17CH3,
• —CH2CH2CH2OH,
• wherein z is an integer of from about 34 to about 44, or (2) X is a —NH— group and (i) R1 is
• wherein q is an integer of from about 10 to about 15, p is an integer of from 0 to about 3, and the sum of p+q=15,
• or
• —(CH2)17CH3
• and R2 is
• —CH2CH3,
• —(CH2)3CH3,
• —(CH2)7CH3,
• —(CH2)9CH3,
• —(CH2)11CH3,
• —(CH2)13CH3,
• —(CH2)15CH3,
• —(CH2)17CH3,
• wherein z is an integer of from about 34 to about 44, or (ii) R1 is
• and R2 is
• —CH2CH3,
• wherein z is an integer of from about 34 to about 44.