申请人:Hewlett-Packard Company
公开号:EP1035179A1
公开(公告)日:2000-09-13
Specific core-shell, or latex, binders and additives for use in ink-jet printing ink compositions are provided. One class of specific core/shell binders has the general formula [AmBnC'p,Fs]x, where A and B are hydrophobic components in which A exhibits a glass transition temperature Tg between about -150° and +25°C and B exhibits a glass transition temperature greater than 25°C, C' is a component that forms a hydrophilic or water-soluble component in the polymer chain, and has an ionic or non-ionic structure, F contains oxygen-hydrogen functional groups such as aldehydes, carboxylic acids, allyl alcohols, acetals, and hemiacetals, m < 30 wt%, n >40 wt%, p < 30 wt%, and s < 30 wt%, with the total of m + n + p + s = 100 wt%, and x = 1 to 100,000. The molecular weight (weight average) of the polymer is between about 1,000 and 2,000,000. The polymers useful in the practice of the invention are prepared by emulsifying the monomers and then conducting a free-radical polymerization in water. The foregoing binder polymer is used in conjunction with amine-containing additives comprising either (a) amine alcohols having the general formula
where R1 and R2 are independently selected from the group consisting of hydrogen, alkyl, alkoxy, aryl, and phenoxy, R is alkyl, X is selected from the group consisting of hydrogen, alkyl, aryl, -OH, -COOH, -CHO, and substituted groups; (b) amines, or (c) polyamines. In the ink compositions of the present invention, the ratio of binder (I) to colorant (pigment) is greater than 1 to 10. The concentration of the amine-containing additive in the ink is within the range of 0.01 to 10 wt%.
提供了用于喷墨打印墨水组合物的特定芯壳或乳胶粘合剂和添加剂。一类特殊的芯/壳粘合剂具有通式 [AmBnC'p,Fs]x,其中 A 和 B 是疏水性成分,A 的玻璃化转变温度 Tg 在约 -150° 和 +25°C 之间,B 的玻璃化转变温度高于 25°C、C'是在聚合物链中形成亲水性或水溶性的组分,具有离子或非离子结构,F含有氧氢官能团,如醛、羧酸、烯丙基醇、乙醛和半乙醛,m 40 wt%,p < 30 wt%,s < 30 wt%,总计m + n + p + s = 100 wt%,x = 1至100,000。聚合物的分子量(平均重量)约在 1,000 至 2,000,000 之间。本发明实践中有用的聚合物是通过乳化单体,然后在水中进行自由基聚合制备的。上述粘合剂聚合物与含胺添加剂一起使用,含胺添加剂包括 (a) 通式为
其中 R1 和 R2 独立地选自氢、烷基、烷氧基、芳基和苯氧基组成的组,R 为烷基,X 选自氢、烷基、芳基、-OH、-COOH、-CHO 和取代基组成的组;(b)胺,或 (c) 多胺。在本发明的油墨组合物中,粘合剂 (I) 与着色剂(颜料)的比例大于 1 比 10。含胺添加剂在油墨中的浓度在 0.01 至 10 wt%之间。