Biscationic acid amide and imide derivatives and processes for their preparation

US5329046A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Hans-Tobias Macholdt · Darmstadt, DE
• Siegfried Schiessler · Frankfurt am Main, DE
• Jorg Gitzel · Hattersheim, DE
• Erwin Dietz · Kelkheim, DE

Key dates

• Filing date: Jun 25, 1992
• Grant date: Jul 12, 1994
• Expiry date: Jun 25, 2012

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C07C2601/14
• WIPO field: Organic fine chemistry
• WIPO sector: Chemistry

Abstract

The invention relates to biscationic acid amide and acid imide derivatives with an anion of formula (BR.sub.9 R.sub.10 R.sub.11 R.sub.12)--, where R.sub.9 to R.sub.12 are aliphatic, iso- or heterocyclic aromatic residues or aralkyl residues, which may be substituted by C.sub.1 -C.sub.4 -alkyl residues, C.sub.1 -C.sub.4 -alkoxy residues, aryl residues or halogen atoms (e.g. fluorine atoms), and mixtures of these compounds and mixed crystals with mixed anions and/or cations. The invention also relates to a process for preparing them. The new compounds are excellent colorless charge controllers in toners and developers for electrophotographic recording and as charge-enhancers in powders and paints for surface coating, in particular in triboelectrically or electrokinetically sprayed powder paints.