| 摘要 |
An ink jet ink composition comprising water, a pigment, a humectant and a hyperbranched polymer having end groups consisting essentially of hydrophilic moieties, said hyperbranched polymer having the following formula: <?in-line-formulae description="In-line Formulae" end="lead"?>HB-X<SUB>g</SUB><?in-line-formulae description="In-line Formulae" end="tail"?> wherein: HB is a hyperbranched polymer core; X is a hydrophilic end group; and g is an integer of at least 2.
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