Cabot Corporation
Amphoteric polymers and use in inkjet ink compositions

Abstract:

Disclosed herein are inkjet ink compositions comprising a polymer comprising the repeat units (A), (B), and (C), wherein: (A) is selected from --N.sup.+(R.sub.1)(R.sub.2)-- and --N(R.sub.1)--; (B) is selected from C.sub.1-C.sub.10 alkylene; C.sub.3-C.sub.20 cycloalkylene; C.sub.3-C.sub.20 heterocycloalkylene; arylene; heteroarylene; C.sub.2-C.sub.20 ether; C.sub.2-C.sub.20 thioether; C.sub.2-C.sub.20 ester; C.sub.2-C.sub.20 acetal; C.sub.2-C.sub.20 amide; bisphenols; and oligomer and polymer moieties selected from polyether, polyester, polyamines, polycarbonate, polyacetal, polythioether, polyester amide, polyurethane, polyacrylate, polyolefin, and polyalkylsiloxane, and (C) comprises at least one group selected from: (i) --C(R.sub.3) (R.sub.4)--C(R.sub.5)(OH)--(C(R.sub.6)(R.sub.7))m-, (ii) --C(R.sub.3)(R.sub.4)--C(R.sub.5)(H)--C(O)--, and (iii) --C(R.sub.3)(R.sub.4)--C(R.sub.5)(H)--S(O)(O); and (A) is bonded to the --C(R.sub.3)(R.sub.4)-- group of (C), and (B) is bonded to (C).