公开(公告)号：EP1146094A2

公开(公告)日：2001-10-17

申请号：EP01302034.2

申请日：2001-03-06

申请人： TOYO INK MANUFACTURING CO., LTD.

发明人： Uemura, Toshiyuki ,  Kaneda, Jun ,  Suzuki, Eriko ,  Negishi, Takashi ,  Aida, Seiji

IPC分类号： C09D11/00 ,  C09B67/22

CPC分类号： C09D11/322 ,  C09B67/0034

摘要： An aqueous pigment dispersion comprising:

(a) 100 parts by weight of a pigment;
(b) 3 to 30 parts by weight of at least one sulfonic acid group-containing derivative of a pigment of the same pigment type as (a); and
(c) water,
   wherein (i) component (b) comprises a pigment derivative which has only one sulfonic acid group in each molecule, (ii) at least part of the pigment derivative (b) is present, in the dispersion, in the form of a sulfonic acid salt selected from an ammonium salt, an organic amine salt and a salt with a monovalent metal, provided that at least 15% of the sulphonic acid groups do not form a salt with the monovalent metal, and (iii) the dispersion contains 500 ppm or less of solid metal ions having a valence of at least 2.

摘要翻译： 一种水性颜料分散体，其包含：（a）100重量份的颜料; （b）与（a）相同的颜料类型的颜料的至少一种含磺酸基衍生物3〜30重量份。 和（c）水，其中（i）组分（b）包括在每个分子中仅具有一个磺酸基团的颜料衍生物，（ii）在分散体中存在至少一部分颜料衍生物（b） 选自铵盐，有机胺盐和与一价金属的盐的磺酸盐的形式，条件是至少15％的磺酸基团不与一价金属形成盐，和（iii） 该分散体含有500ppm以下的化合价至少为2的固体金属离子。