Patent · US Expired

Use of salts of layered double hydoxides

US7569318B2 · kind B2 · utility

4Cited by

23References

14Claims

0Family size

Assignee

Clariant Produkte (Deutschland) GmbH · DE

Inventors

Eduard Michel · Frankfurt, DE
Ruediger Baur · Niedernhausen, DE
Hans-Tobias Macholdt · Darmstadt, DE

Key dates

Filing date	Jul 9, 2003
Grant date	Aug 4, 2009
Priority date	—
Expiry date	Oct 14, 2024

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB03C7/006
WIPO fieldOptics
WIPO sectorInstruments

Abstract

A layered double hydroxide salt as a charge control agent 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 organic anions A of the formulae (I) to (XXX) set forth in the specification.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.