Premium
Pigments with improved properties – microreaction technology as a new approach for synthesis of pigments –
Author(s) -
Kim H.,
Saitmacher K.,
Unverdorben L.,
Wille Ch.
Publication year - 2002
Publication title -
macromolecular symposia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.257
H-Index - 76
eISSN - 1521-3900
pISSN - 1022-1360
DOI - 10.1002/1521-3900(200209)187:1<631::aid-masy631>3.0.co;2-l
Subject(s) - microreactor , process engineering , pilot plant , nanotechnology , materials science , biochemical engineering , chemistry , engineering , chemical engineering , catalysis , organic chemistry
Clariant, as an important pigment producer forces the investigation of new pigments with improved qualities and properties to fulfill the rising tomorrow's demands of customers. For these reasons, new production ways like microreaction technology are included. This paper focuses on results obtained in manufacturing pigments in a lab‐scale microreactor as well as in a microreactor pilot plant. Investigations of the diazotation, azo‐coupling and laking steps of pigments have shown not only the principle feasibility of these reactions in laboratory microreactors but also significant improvement of coloristic properties. The microreactor pilot plant, realized by the concept of numbering‐up instead of conventional scaling‐up process, allowed more detailed investigations of the complete azo‐pigments synthesis under production conditions.