申请人:Michel Eduard
公开号:US20050277040A1
公开(公告)日:2005-12-15
The invention relates to the use of layered double hydroxide salts as charge control agents in electrophotographic toners and developers, in coating powders, electret materials and in electrostatic separation processes, characterized in that the double hydroxide salt contains monovalent and/or bivalent and even trivalent metal cations, in addition to one or several organic anions of formula X—R—Y (I), wherein X=hydroxy, carboxy, sulphato or sulpho; Y=carboxy, sulphato or sulpho, and R=a bivalent aliphatic, cycloaliphatic, heterocycloaliphatic, olefinic, cycloolefinic, heterocycloolefinic, aromatic, heteroaromatic, araliphatic or heteroaraliphatic radical having at least 8 C atoms which can be substituted by one or several substituents from the group of hydroxy, amino, halogen, C
1
-C
22
-alkyl, C
1
-C
22
-alkoxy, carboxy, sulpho, nitro or cyano.
本发明涉及将层状双氢氧化物盐用作电子照相墨粉和开发剂、涂层粉、静电材料以及静电分离过程中的电荷控制剂,其特征在于双氢氧化物盐包含一价和/或二价甚至三价金属阳离子,另外还含有一个或多个公式X-R-Y(I)的有机阴离子,其中X=羟基、羧基、硫酸盐或磺酸盐;Y=羧基、硫酸盐或磺酸盐,而R=具有至少8个C原子的二价脂肪族、环脂肪族、杂环脂肪族、烯烃、环烯烃、杂环烯烃、芳香族、杂芳香族、芳基脂肪族或杂芳基脂肪族基团,可被氢氧基、氨基、卤素、C1-C22烷基、C1-C22烷氧基、羧基、磺酸基、硝基或氰基中的一个或多个取代。