GB221975A - Manufacture of new dyestuffs for wool of the safranine series - Google Patents

Manufacture of new dyestuffs for wool of the safranine series

Info

Publication number
GB221975A
GB221975A GB2647623A GB2647623A GB221975A GB 221975 A GB221975 A GB 221975A GB 2647623 A GB2647623 A GB 2647623A GB 2647623 A GB2647623 A GB 2647623A GB 221975 A GB221975 A GB 221975A
Authority
GB
United Kingdom
Prior art keywords
sulphonic acid
amino
acid
naphthylamine
sulphonic
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
GB2647623A
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.)
ACTIEN GESSELLSCHAFT fur ANIL
Agfa Gevaert NV
Original Assignee
ACTIEN GESSELLSCHAFT fur ANIL
Aktiengesellschaft fuer Anilinfabrikation GmbH
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 ACTIEN GESSELLSCHAFT fur ANIL, Aktiengesellschaft fuer Anilinfabrikation GmbH filed Critical ACTIEN GESSELLSCHAFT fur ANIL
Priority to GB2647623A priority Critical patent/GB221975A/en
Publication of GB221975A publication Critical patent/GB221975A/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
    • C09B17/00—Azine dyes
    • C09B17/04—Azine dyes of the naphthalene series

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Safranine dyes are produced from iso-rosindulines of the formula <FORM:0221975/2/1> (in which R, R1 = alkyl or aralkyl and X = an acid residue) or their derivatives, either by oxidizing them together with aromatic p-diamines and sulphonating the products, or by oxidizing them together with aromatic p-diamine sulphonic acids. The parent iso-rosindulines are obtained in known manner by condensing 4-amino-3-sulpho-tertiary aromatic amines with aryl-2-naphthylamines or derivatives thereof. According to examples:-(1) A mixture of 31-sulphophenyl-2-naphthylamine and 1-dimethylamino-4-aminobenzene-3-sulphonic acid is oxidized by means of sodium bichromate to the isorosinduline sulphonic acid; without isolating the product, 1 : 4-diaminobenzene-2-sulphonic acid, caustic soda, and sodium sulphite are added and air blown through; after filtering from chromium hydroxide, the safranine is salted out: the 31-sulphophenyl-2-naphthylamine may be replaced by the 41-sulpho-derivative or by for example a halogen derivative, and the 1-dimethylamino-4-amino-benzene-3-sulphonic acid by the diethyl compound or by 4-amino-41-sulphobenzyl-ethylaniline-3-sulphonic acid; (2) the iso-rosindulinesulphonic acid from 2-phenylamino-naphthalene-6-sulphonic acid and 1-diethylamino-4-aminobenzene-3-sulphonic acid is oxidized together with 1-p-toluenesulphamino-4-amino-2-chlorobenzene and the toluenesulpho group eliminated: (3) the isorosinduline sulphonic acid from benzeneazo-dimethylaniline sulphonic acid and phenyl-2-naphthylamine is oxidized together with 1-p-toluenesulphamino-4-amino-2-chlorobenzene and sulphonation and elimination of the toluenesulpho group simultaneously effected by treatment with fuming sulphuric acid. The products dye wool in level blue or green-blue shades. Specifications 24410/97 and 14961/98 are referred to. 31- and 41-Sulphophenyl-2-naphthylamine are obtained by boiling with sodium bisulphite solution a mixture of 2-naphthol and aniline-3- or 4-sulphonic acid. 1 - Dimethylamino-4-aminobenzene-3-sulphonic acid is obtained by reducing the dyestuff from a diazo compound and 1-dimethylaminobenzene-3-sulphonic acid.
GB2647623A 1923-10-23 1923-10-23 Manufacture of new dyestuffs for wool of the safranine series Expired GB221975A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2647623A GB221975A (en) 1923-10-23 1923-10-23 Manufacture of new dyestuffs for wool of the safranine series

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2647623A GB221975A (en) 1923-10-23 1923-10-23 Manufacture of new dyestuffs for wool of the safranine series

Publications (1)

Publication Number Publication Date
GB221975A true GB221975A (en) 1924-09-25

Family

ID=10244240

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2647623A Expired GB221975A (en) 1923-10-23 1923-10-23 Manufacture of new dyestuffs for wool of the safranine series

Country Status (1)

Country Link
GB (1) GB221975A (en)

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