Legal status (The legal status 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 status listed.)
Expired
Application number
GB11431/23A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
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
Application filed by Gesellschaft fuer Chemische Industrie in Basel CIBAfiledCriticalGesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB199360ApublicationCriticalpatent/GB199360A/en
C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
C09B—ORGANIC DYES OR CLOSELY-RELATED COMPOUNDS FOR PRODUCING DYES, e.g. PIGMENTS; MORDANTS; LAKES
C09B49/00—Sulfur dyes
C09B49/10—Sulfur dyes from diphenylamines, indamines, or indophenols, e.g. p-aminophenols or leucoindophenols
Landscapes
Chemical & Material Sciences
(AREA)
Organic Chemistry
(AREA)
Indole Compounds
(AREA)
Abstract
Sulphuretted dyes are obtained by heating the leuco-indophenol from carbazole and p-nitrosophenol with an alkali polysulphide in presence of benzidine: the products dye indigo tints from sodium sulphide baths or hydrosulphite vats.
GB11431/23A1922-06-131923-04-27Manufacture of new dyestuffs of indigo tint
ExpiredGB199360A
(en)