| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an aqueous ink for inkjet recording which is excellent in prevention of kogation, ink warming storage stability and maintainability, and can achieve an abrasion resistance in printing. <P>SOLUTION: The aqueous ink for inkjet recording includes a colorant comprising the components A, B and C described below. The component A is an azo pigment represented by general formula (Y-1), a tautomer thereof, or a salt or a hydrate thereof. The component B is a vinyl polymer comprising a hydrophobic structural unit (a) having a specific structure and a hydrophilic structural unit (b), and the component C is a urethane resin. In the general formula (Y-1), Z is a five- or six-membered hetero-ring; Y<SB POS="POST">1</SB>, Y<SB POS="POST">2</SB>, R<SB POS="POST">11</SB>and R<SB POS="POST">12</SB>are each independently hydrogen or substituent; G<SB POS="POST">1</SB>and G<SB POS="POST">2</SB>are each independently hydrogen, alkyl, aralkyl, alkenyl, alkynyl, aryl or hetero-ring; and W<SB POS="POST">1</SB>and W<SB POS="POST">2</SB>are each independently alkoxy, amino, alkyl or aryl. <P>COPYRIGHT: (C)2012,JPO&INPIT |
