Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE1908207097Dexternal-prioritypatent/DE207097C/de
Application filed by Kalle & Co AgfiledCriticalKalle & Co Ag
Application grantedgrantedCritical
Publication of AT44102BpublicationCriticalpatent/AT44102B/de
Nitrogen And Oxygen Or Sulfur-Condensed Heterocyclic Ring Systems
(AREA)
Coloring
(AREA)
Paper
(AREA)
Description
<Desc/Clms Page number 1>
EMI1.1
EMI1.2
EMI1.3
EMI1.4
EMI1.5
EMI1.6
EMI1.7
EMI1.8
EMI1.9
<Desc/Clms Page number 2>
EMI2.1
Claims (1)
PATENT. ANSPRUCH : Verfahren zur Darstellung indigoider Farbstoffe, dadurch gekennzeichnet, dass man die reakctiionsfähigen α-Isatinderivate
EMI2.2
mit molekularen Mengen substituierter Phenole oder Naphthole kondensiert, in welchen eine Orthostellung zu einem Hydroxyl frei ist.
AT44102D1908-01-081909-03-24Verfahren zur Darstellung indigoider Farbstoffe.
AT44102B
(de)