Aqueous dispersion of resin particles

An aqueous inkjet ink comprising a colorant and resin particles in an amount of 30 wt. % or less with respect to the total weight of the ink, wherein the colorant is a pigment having an average pigment particle size of 0.05-1 μm and the resin particles comprise a resin comprising a covalently bonded dispersing group and at least one repeating unit of at least one of formula I, II, and III

• wherein
• R1 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, C—OR4, or CN;
• R2 is hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, or C—OR4;
• R1 and R2 together may form a five to eight membered ring;
• R3 is substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• R4 is hydrogen, substituted or unsubstituted alkyl, a substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, substituted or unsubstituted heteroaryl, OR5, or NR6R7;
• R5 is substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• R6 and R7 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• R6 and R7 together may form a five to eight membered ring;
• X is O, NR8, or CR9R10;
• R8, R9, and R10 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• R8 and R3 together may form a five to eight membered ring;
• and
• any of R3, R9, and R10 together may form a five to eight membered ring;
• and
• the resin is obtained by contacting, in a liquid, a compound A comprising at least two functional groups of at least one of —X—C(═O)—CHR1—C(═O)—R2, —X—C(═O)—C≡C—R2, and —X—C(═O)—CR1═CR2—NR11R12 with a compound B comprising at least two of —NH2, —NH3+, and —N═C═O;
• wherein R11 and R12 are each independently hydrogen, substituted or unsubstituted alkyl, substituted or unsubstituted alkenyl, substituted or unsubstituted alkynyl, substituted or unsubstituted aryl, or substituted or unsubstituted heteroaryl;
• and
• at least one of compound A and compound B comprise a dispersing group or a dispersing group precursor.