Global Patent Index - EP 0576472 B1

EP 0576472 B1 19960828 - ELECTROSTATIC TONERS CONTAINING A KETO COMPOUND AS CHARGE STABILIZER

Title (en)

ELECTROSTATIC TONERS CONTAINING A KETO COMPOUND AS CHARGE STABILIZER

Title (de)

ELEKTROSTATISCHER TONER, ENTHALTEND EINE KETOVERBINDUNG ALS LADUNGSSTABILISATOR

Title (fr)

TONER ELECTROSTATIQUE CONTENANT UN COMPOSE CETONIQUE COMME STABILISATEUR DE LA CHARGE

Publication

EP 0576472 B1 19960828 (DE)

Application

EP 92906365 A 19920311

Priority

  • DE 4109086 A 19910320
  • EP 9200534 W 19920311

Abstract (en)

[origin: WO9216878A1] The invention discloses electrostatic toners containing a polymer binder and as charge stabilizer a compound of formula (I), wherein Z stands for a C1?-C20? alkyl, possibly substituted with phenyl, C5?-C7? cycloalkyl or possibly substituted phenyl, X and Y stand for cyano or a residue of formula -CO-OR?1, -CO-NR?1R?2 or -CO-R?3, wherein R?1 stands for C1?-C20? alkyl, possibly substituted by phenyl, or C5?-C7? cycloalkyl R?2 stands for hydrogen or C1?-C4? alkyl and R?3 for C1?-C20? alkyl, possibly substituted by phenyl, C5?-C7? cycloalkyl or possibly substituted phenyl, or X and Y together stand for a residue of formula -CO-L-CO- or -CO-CH=C(CH3?)-O-CO-, wherein L stands for C2?-C4? alkylene and Kat?+ stands for the equivalent of a cation. Also disclosed is the use of the above mentioned compounds as charge stabilizers in electrostatic toners.

IPC 1-7

G03G 9/135; G03G 9/097

IPC 8 full level

G03G 9/097 (2006.01); G03G 9/135 (2006.01)

CPC (source: EP KR US)

G03G 9/0975 (2013.01 - EP US); G03G 9/135 (2013.01 - KR)

Designated contracting state (EPC)

BE CH DE ES FR GB IT LI NL

DOCDB simple family (publication)

WO 9216878 A1 19921001; CA 2099570 A1 19920921; DE 4109086 A1 19920924; DE 59207011 D1 19961002; EP 0576472 A1 19940105; EP 0576472 B1 19960828; ES 2090613 T3 19961016; JP H06505812 A 19940630; KR 930703632 A 19931130; US 5338639 A 19940816

DOCDB simple family (application)

EP 9200534 W 19920311; CA 2099570 A 19920311; DE 4109086 A 19910320; DE 59207011 T 19920311; EP 92906365 A 19920311; ES 92906365 T 19920311; JP 50551192 A 19920311; KR 930702097 A 19930713; US 9004293 A 19930720