[EN] METHODS FOR PREPARING AQUEOUS COLORED PIGMENT DISPERSIONS, AND INKJET INK COMPOSITIONS<br/>[FR] PROCEDES DE PREPARATION DE DISPERSIONS DE PIGMENT COLORE AQUEUSES ET COMPOSITION POUR IMPRIMANTE A JET D'ENCRE
申请人:CABOT COPRORATION
公开号:WO2004067643A1
公开(公告)日:2004-08-12
The present invention describes methods for preparing aqueous colored pigment dispersions comprising the step of combining, in any order, a) a colored pigment, b) an azo coupler, c) an aromatic amine, d) a diazotizing agent, and e) an aqueous medium, wherein the aromatic amine comprises as least one ionic group, at least one ionizable group, or a mixture of at least one ionic group and at least one ionizable group. These colored pigment dispersions are particularly useful as an inkjet ink composition. Also disclosed are inkjet ink compositions comprising a) a liquid vehicle, b) a colored pigment, and c) a dispersant having the formula: D-N=N-AC, wherein AC is an azo coupling component and D is a diazo component comprising at least one ionic group, at least one ionizable group, or a mixture of at least one ionic group or ionizable group.
本发明描述了制备水性彩色颜料分散液的方法,包括以下步骤:任意顺序地结合a) 彩色颜料,b) 偶氮偶联剂,c) 芳香胺,d) 重氮化剂和e) 水性介质,其中芳香胺包括至少一个离子基团、至少一个可离子化基团或至少一个离子基团和至少一个可离子化基团的混合物。这些彩色颜料分散液特别适用作为喷墨墨水组成。还公开了包括a) 液体载体,b) 彩色颜料和c) 具有以下结构的分散剂的喷墨墨水组成:D-N=N-AC,其中AC是偶氮偶联组分,D是包括至少一个离子基团、至少一个可离子化基团或至少一个离子基团或可离子化基团的混合物的重氮组分。