A non-aqueous inkjet ink includes C.I. Pigment Yellow 150 and a polymeric dispersant according to Formula (I):
wherein,
T represents hydrogen or a polymerization terminating group;
Z represents the residue of polyethyleneimine having a number-average molecular weight of at least 100;
A represents an oxyalkylene carbonyl group;
T-C(O)A
n
- represents a TPOAC-chain which is bound to Z through an amide bond; and
n and m are integers wherein m is at least 2 and n is from 2 to 100;
the polymeric dispersant fulfills the conditions of:
W
TPOAC
>57 and N
Amide
≧65 mol %
wherein
W
TPOAC
represents the ratio of the weight percentage of TPOAC-chains over the weight percentage of amide bonds in the polymeric dispersant;
N
Amide
represents the mol % of amide bonds based on the total nitrogen content of the polymeric dispersant; and
the values of W
TPOAC
and N
Amide
are calculated from the total nitrogen content determined by dry combustion of the polymeric dispersant and from the amine content determined through potentiometric titration in a mixture of CH
3
COOH:THF (14.5:0.5) with 0.1N aqueous perchloric acid.
一种非
水性喷墨墨
水,包括C.I. Pigment Yellow 150和根据公式(I)的聚合物分散剂:
其中,T代表氢或聚合物终止基团;Z代表具有至少100的数均分子量的聚
乙烯亚胺的残基;A代表氧烷基羰基基团;T-C(O)An-代表通过酰胺键与Z结合的TPOAC链;而n和m是整数,其中m至少为2,n为2至100之间;
聚合物分散剂满足以下条件:
WTPOAC > 57,NAmide≧65 mol%
其中,WTPOAC代表聚合物分散剂中TPOAC链的重量百分比与酰胺键的重量百分比之比;NAmide代表聚合物分散剂总氮含量基础上的酰胺键摩尔百分比;WTPOAC和NAmide的值是通过干燥燃烧聚合物分散剂确定的总氮含量以及在CH3COOH:THF(14.5:0.5)混合物中用0.1N的
高氯酸水溶液进行电位滴定测定的胺含量计算出来的。