GB707705A - Improvements relating to sulphur dyestuffs and their use - Google Patents

Improvements relating to sulphur dyestuffs and their use

Info

Publication number
GB707705A
GB707705A GB7345/52A GB734552A GB707705A GB 707705 A GB707705 A GB 707705A GB 7345/52 A GB7345/52 A GB 7345/52A GB 734552 A GB734552 A GB 734552A GB 707705 A GB707705 A GB 707705A
Authority
GB
United Kingdom
Prior art keywords
methyl
nitrosophenol
diphenylamine
sulphurized
indophenols
Prior art date
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
GB7345/52A
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.)
Novartis AG
National Starch and Chemical Investment Holding Corp
Original Assignee
JR Geigy AG
National Starch and Chemical Investment Holding Corp
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 JR Geigy AG, National Starch and Chemical Investment Holding Corp filed Critical JR Geigy AG
Publication of GB707705A publication Critical patent/GB707705A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • 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

Abstract

Sulphur dyes are made by reacting with agents introducing sulphur indophenols of the formula:- <FORM:0707705/IV(c)/1> where R is a low molecular aliphatic hydrocarbon radical, containing at most four carbon atoms, and the benzene ring may contain methyl groups, and halogen atoms, or their leuco compounds. The starting materials are prepared from the corresponding N-alkyldiphenylamines unsubstituted in at least one paraposition by condensing with p-nitrosophenol in strong aqueous mineral acid. Solvents specified for the sulphurization are glycol monoethyl and monomethyl ethers. The products dye cellulose fibres from a sulphide or hydrosulphite vat reddish to greenish blue shades. In examples, leuco-indophenols are sulphurized with sodium polysulphide which are derived from p-nitrosophenol and (1)-methyl-, ethyl-, or butyl-diphenylamine, (2) N-methyl-3 or 4-chloro-diphenylamine, (3) N-methyl-3.4-dichlorodiphenylamine, (4) N-methyl-4-methyldiphenylamine. Also in examples, (5) a product obtained from o-chloro-p-nitrosophenol and N-methyl-diphenylamine is sulphurized with elimination of the chlorine atom.
GB7345/52A 1951-03-22 1952-03-21 Improvements relating to sulphur dyestuffs and their use Expired GB707705A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH707705X 1951-03-22

Publications (1)

Publication Number Publication Date
GB707705A true GB707705A (en) 1954-04-21

Family

ID=4530499

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7345/52A Expired GB707705A (en) 1951-03-22 1952-03-21 Improvements relating to sulphur dyestuffs and their use

Country Status (1)

Country Link
GB (1) GB707705A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963764A (en) * 1970-12-30 1976-06-15 L'oreal Indoanilines
US4045170A (en) * 1970-12-30 1977-08-30 L'oreal Hair dye composition containing an indoaniline

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3963764A (en) * 1970-12-30 1976-06-15 L'oreal Indoanilines
US4045170A (en) * 1970-12-30 1977-08-30 L'oreal Hair dye composition containing an indoaniline

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