The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 03, 2009
Filed:
Jul. 09, 2003
Eduard Michel, Frankfurt am Main, DE;
Ruediger Baur, Eppstein-Niederjosbach, DE;
Hans-tobias Macholdt, Darmstadt-Eberstadt, DE;
Eduard Michel, Frankfurt am Main, DE;
Ruediger Baur, Eppstein-Niederjosbach, DE;
Hans-Tobias Macholdt, Darmstadt-Eberstadt, DE;
Clariant Produkte ( Deutschland) GmbH, Sulzbach, DE;
Abstract
Layered double hydroxide salts as charge control agents in electrophotographic toners and developers, in powder coating materials, electret materials and in electrostatic separation processes of chargeable materials, such as polymers, wherein the double hydroxide salt contains monovalent and/or divalent, and also trivalent, metal cations, and also contains one or more organic anions A of the formula (I)X—R—Y  (1)whereinX is hydroxyl, carboxyl, sulfato or sulfo;Y is carboxyl, sulfato or sulfo, andR is an aliphatic, cycloaliphatic, heterocycloaliphatic, olefinic, cycloolefinic. heterocycloolefinic, aromatic, heteroaromatic, araliphatic or heteroaraliphatic radical having a total of at least 8 carbon atoms which can be substituted by one or several substituents from the group hydroxyl, amino, halogen, C-C-alkyl, C-C-alkoxy, —C-C-alkylene-(CO)—O—(CHCHO)-alkyl,—C-C-alkylene-(CO)—O—(CHHO)-haloalkyl, carboxy, sulfo, nitro or cyano.