GB189367A - Improvements in vat dyestuffs - Google Patents

Improvements in vat dyestuffs

Info

Publication number
GB189367A
GB189367A GB3495521A GB3495521A GB189367A GB 189367 A GB189367 A GB 189367A GB 3495521 A GB3495521 A GB 3495521A GB 3495521 A GB3495521 A GB 3495521A GB 189367 A GB189367 A GB 189367A
Authority
GB
United Kingdom
Prior art keywords
methylanthraquinone
sulphur
trichlor
yellow
product
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
GB3495521A
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.)
Sanofi Aventis Deutschland GmbH
Original Assignee
Leopold Cassella et Cie 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 Leopold Cassella et Cie GmbH filed Critical Leopold Cassella et Cie GmbH
Priority to GB3495521A priority Critical patent/GB189367A/en
Publication of GB189367A publication Critical patent/GB189367A/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
    • C09B49/12—Sulfur dyes from other compounds, e.g. other heterocyclic compounds
    • C09B49/124—Sulfur dyes from other compounds, e.g. other heterocyclic compounds from polycarbocyclic compounds

Landscapes

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

Abstract

Sulphuretted dyes of the anthraquinone series which dye vegetable fibres fast shades from the hydrosulphite vat are obtained by heating 2-methylanthraquinone, or an o -halogenized derivative thereof, with an aromatic compound containing the p-diamine grouping, and sulphur; in place of the p-diamine compounds which yield p-diamines during the reaction may be used. According to examples, (1) 2-methylanthraquinone and benzidine are heated with sulphur, the product freed from sulphur, dissolved in sulphuric acid, precipitated by water and the dye paste purified by treatment with oxidizing agents such as a solution of sodium hypochlorite; the product dyes cotton reddish yellow-shades; the same product is obtained from o -dichlor-or w-trichlor-2-methylanthraquinone, benzidine, and sulphur heated in trichlorbenzine: (2) A greenish yellow vat-dyestuff is similarly obtained from 2-methylanthraquinone, sulphur, and p-nitraniline, or p-phenylenediamine, or p-aminoazobenzene; analogous dyestuffs are obtained from substitution products such as chlor-p-nitraniline or chlorpphenylenediamine; the greenish-yellow dyestuff is also obtained by heating o - trichlor - 2 - methylanthraquinone with p - phenylenediamine and sulphur in boiling naphthalene. o -Trichlor-2-methylanthraquinone may be prepared by a process similar to that of example 7 of Specification 16632/05.
GB3495521A 1921-12-29 1921-12-29 Improvements in vat dyestuffs Expired GB189367A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3495521A GB189367A (en) 1921-12-29 1921-12-29 Improvements in vat dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3495521A GB189367A (en) 1921-12-29 1921-12-29 Improvements in vat dyestuffs

Publications (1)

Publication Number Publication Date
GB189367A true GB189367A (en) 1922-11-30

Family

ID=10372041

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3495521A Expired GB189367A (en) 1921-12-29 1921-12-29 Improvements in vat dyestuffs

Country Status (1)

Country Link
GB (1) GB189367A (en)

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