An ink jet ink composition comprising: from 40.0 to 99.0% by weight of water; from 0.1 to 20.0% by weight of a pigment; from 0 to 70.0% by weight of a water miscible co-solvent; and from 0.1 to 20.0 % by weight of a water-reducible addition polymer; wherein the weight average molecular weight of the polymer is from 2,000 to 100,000; the acid number is from 50 to 400; and the acid group on the polymer is neutralized by an alkaline metal hydroxide such as lithium hydroxide, sodium hydroxide potassium hydroxide, or a mixture thereof; and wherein all weight percentages are based on the total weight of the ink composition. An ink jet printing method is also disclosed.
一种喷墨墨
水组合物,包括:按重量计,40.0% 至 99.0% 的
水;按重量计,0.1% 至 20.0% 的
颜料;按重量计,0% 至 70.0% 的
水溶性助溶剂;以及按重量计,0.1% 至 20.其中聚合物的重量平均分子量为2,000至100,000;酸数为50至400;聚合物上的酸基被碱
金属氢氧化物如
氢氧化锂、
氢氧化钠氢氧化钾或它们的混合物中和;所有重量百分比均基于油墨组合物的总重量。还公开了一种喷墨打印方法。