Azo pigment-containing aqueous ink for inkjet recording

An aqueous ink for inkjet recording, comprising vinyl polymer particles containing A and B and a water-soluble solvent:

• A:
• an azo pigment represented by the following formula (1), its tautomer, or a salt or hydrate thereof;
• B:
• a vinyl polymer containing (a) a hydrophobic structural unit having an aromatic ring bonded to the polymer main chain through a linking group and (b) a hydrophilic structural unit:
• wherein Q represents a 5- to 7-membered heterocyclic ring together with the carbon atoms, W represents an alkoxy group, an amino group, an alkyl group or an aryl group, X1 and X2 each independently represents a hydrogen atom, an alkyl group, an acyl group, an alkylsulfonyl group or an aryl sulfonyl group, R1 represents a hydrogen atom or a substituent, R2 represents a heterocyclic group, n represents an integer of 1 to 4, and the formula represents a dimer through Q, W, X1, X2, R1 or R2 when n=2, and the formula represents a trimer through Q, W, X1, X2, R1 or R2 when n=3, and the formula represents a tetramer through Q, W, X1, X2, R1 or R2 when n=4;
• and wherein the hydrophobic structural unit (a) contains (a1) a hydrophobic structural unit represented by the following formula (I):
• wherein R1 in formula (I) represents a hydrogen atom, a methyl group or a halogen atom, L1 represents —COO—, —OCO—, —CONR2—, —O— or a substituted or unsubstituted phenylene group, R2 represents a hydrogen atom or an alkyl group, L2 represents a single bond or a divalent linking group, and Ar1 represents a monovalent group derived from an aromatic ring.