Title:
PROCESS FOR THE DIRECT PREPARATION OF PYRROLO[3,4-C]PYRROLES
Document Type and Number:
WIPO Patent Application WO2003022847
Kind Code:
A3
Abstract:
The present invention relates to a process for the direct preparation of pyrrolo[3,4-c]pyrroles (DPPs) of the formula (1) , pigment compositions containing them and their use for coloring high molecular weight organic materials, such as plastics and paints. The obtained DPPs of the formula (I) possess a higher colour strength, a higher chroma, a purer shade and a higher opacity versus corresponding commercially available DPPs.
Inventors:
RUFFIEUX VINCENT (CH)
MODOUX FLORENCE (CH)
MODOUX FLORENCE (CH)
Application Number:
PCT/EP2002/009791
Publication Date:
September 25, 2003
Filing Date:
September 03, 2002
Export Citation:
Assignee:
CIBA SC HOLDING AG (CH)
RUFFIEUX VINCENT (CH)
MODOUX FLORENCE (CH)
RUFFIEUX VINCENT (CH)
MODOUX FLORENCE (CH)
International Classes:
G03G9/08; A61K8/49; C07D487/04; C07D491/04; C07D491/048; C07D495/04; C08K5/315; C08K5/3412; C08K5/3417; C08L101/00; C09B57/00; C09B67/10; C09B67/20; C09B67/22; C09D7/00; C09D11/00; C09D201/00; C09K11/06; C07D; (IPC1-7): C07D487/04
Foreign References:
| US5424157A | 1995-06-13 | |||
| EP1087005A1 | 2001-03-28 | |||
| US4585878A | 1986-04-29 | |||
| US5847156A | 1998-12-08 |
Other References:
LANGHALS ET AL: "highly photostable organic fluorescent pigments-a simple synthesis of N-arylpyrrolopyrrolediones (DPP)", LIEBIGS ANNALEN ORGANISCHEN BIOORGANISCHEN CHEMIE, vol. 5, 1996, Germany, pages 679-682, XP001084045
Download PDF:
Previous Patent: PYRAZOLO-PYRIDINES FOR THE TREATMENT OF HERPES INFECTIONS
Next Patent: PROCESS FOR THE PREPARATION OF DIKETOPYRROLOPYRROLES
Next Patent: PROCESS FOR THE PREPARATION OF DIKETOPYRROLOPYRROLES