05248774 is referenced by 22 patents and cites 13 patents.

Perylenetetracarboxylic diimides which contain a radical in the same molecule on one imide nitrogen which acts as an anion but contain a radical on the other imide nitrogen which acts as a cation, and on this basis form inner salts, are available by reaction of sulfo-containing alkylamines with perylenetetracarboxylic monoanhydride monoalkylaminoalkylimides or by reaction of alkylaminoalkylamines with perylenetetracarboxylic monoanhydride monosulfoalkylimides. As a result of their characteristic structural principle, these novel perylene compounds have excellent dispersing properties, in particular for pigments of the same chemical classes of compounds and can even be used themselves as pigments (colorants) depending on the substituent.

Title
Inner salts based on ammonium and sulfonate groups of perylene-3,4,9,10-tetracarboxylic and derivatives thereof
Application Number
7/855608
Publication Number
5248774
Application Date
March 20, 1992
Publication Date
September 28, 1993
Inventor
Manfred Urban
Wiesbaden
DE
Erwin Dietz
Kelkheim
DE
Assignee
Hoechst Aktiengesellschaft
DE
IPC
C09B 67/22
C09B 67/20
C09B 57/08
C09B 5/62
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