Patent ID: 7309558
Filing Date: 2007-12-18
Classification: C01B,C07C,C09D,G03G

Abstract:
1. A method of imparting, controlling or improving the charge of an electrophotographic toner or developer, or an electret material, consisting of adding only a structured silicate salt, wherein the cation is a low molecular weight, nonpolymeric ammonium ion or a combination of a low molecular weight, nonpolymeric ammonium ion with NH 4 + , H 3 O + , an alkali metal, an alkaline earth metal, an earth metal or with a transition metal and the anion is an island, cyclic, group, chain, ribbon, laminar or matrix silicate or a combination thereof to a binder of an electrophotographic toner or developer or of an electret material, wherein the low molecular weight, nonpolymeric ammonium ion is selected from one of the formulas (a) through (j) in which R wherein are optionally inserted into the acid ester or acid amide bonds; [(C R X has the meaning of Y, or —CO—CH Y has the meaning or o-, p-, m-(C R R Z represents —NH— or —O—; A A R R R