EP 0000871 B1 19810211 - METHOD OF PREPARING 2,2'-DITHIODIANILINE
Title (en)
METHOD OF PREPARING 2,2'-DITHIODIANILINE
Publication
Application
Priority
US 82602077 A 19770819
Abstract (en)
[origin: US4136118A] Method of preparing 2,2 min -dithiodianiline by the steps of (A) obtaining an agitated mixture of a water solution of a salt of o-aminothiophenol and an unstable dispersion there-in of a liquid hydrocarbon, (B) oxidizing said salt by the slow addition of a water soluble peroxide, (C) discontinuing the agitation to allow the formation of a sharply defined lower aqueous phase and upper hydrocarbon phase, (D) drawing off said lower aqueous phase and (E) distilling the hydrocarbon phase therefrom and recovering said 2,2 min -dithiodianiline as a distilland.
IPC 1-7
IPC 8 full level
C07C 67/00 (2006.01); C07C 319/20 (2006.01); C07C 313/00 (2006.01); C07C 319/14 (2006.01); C07C 323/33 (2006.01); C07C 323/37 (2006.01)
IPC 8 main group level
C07C (2006.01)
CPC (source: EP US)
C07C 319/24 (2013.01 - EP US)
C-Set (source: EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0000871 A1 19790307; EP 0000871 B1 19810211; CA 1088568 A 19801028; DE 2860470 D1 19810326; IT 1106616 B 19851111; IT 7850561 A0 19780801; JP S5432429 A 19790309; JP S6042789 B2 19850925; US 4136118 A 19790123
DOCDB simple family (application)
EP 78100508 A 19780726; CA 305675 A 19780616; DE 2860470 T 19780726; IT 5056178 A 19780801; JP 9606778 A 19780807; US 82602077 A 19770819