GB222094A - Manufacture of vat dyestuffs containing sulphur - Google Patents

Manufacture of vat dyestuffs containing sulphur

Info

Publication number
GB222094A
GB222094A GB19818/24A GB1981824A GB222094A GB 222094 A GB222094 A GB 222094A GB 19818/24 A GB19818/24 A GB 19818/24A GB 1981824 A GB1981824 A GB 1981824A GB 222094 A GB222094 A GB 222094A
Authority
GB
United Kingdom
Prior art keywords
oxythionaphthene
methyl
anil
ethoxy
nucleal
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
GB19818/24A
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.)
Hoechst AG
Original Assignee
Hoechst AG
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 Hoechst AG filed Critical Hoechst AG
Publication of GB222094A publication Critical patent/GB222094A/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
    • C09B7/00—Indigoid dyes
    • C09B7/10—Bis-thionapthene indigos

Landscapes

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

Abstract

Thioindigoid dyes are prepared by heating a 2-anil/mm of a 2 : 3-diketodihydro-6-alkyloxy-thionaphthene or a nucleal substitution product thereof with a nucleal substitution product of 3-oxythionaphthene, or by heating a 3-oxy-6-alkyl-oxythionaphthene or a nucleal substitution product thereof with a nucleal substitution product of 2 : 3-diketodihydrothionaphthene-2-anil; a solvent may be present. The products dye cotton in red shades which resemble those of alizarin and which may be influenced towards blue or towards yellow by introduction of further substituents. According to examples the following pairs of components are used:-6-ethoxy-3-oxythionaphthene and 4-methyl-6-chloro- or 6-bromo-2 : 3-dihydro-3-keto-2 (p-dimethylamino)- anil; 6-ethoxy-2 : 3-dihydro-3-ketothionaphthene-2- (p-dimethylamino)-anil and 4-methyl-6-bromo-3-oxythionaphthene or 4-methyl-5 : 6-dichloro-3-oxythionaphthene; 6-methoxy-3-oxythionaphthene and 4-methyl-6-bromo-2 : 3-dihydro-3-ketothionaphthene-2(p-dimethylamino)-anil. 4-Methyl-6-chloro-, 4-methyl-6-bromo-, and 6-ethoxy - 2 : 3-dihydro-3-ketothionaphthene - 2 - (p-methylamino) anils are obtained by action of nitrosodimethylaniline upon the corresponding 3-oxythionaphthenes in alkaline solution. Oxythionaphthenes. - 5-Brom-6-ethoxy-3-oxythionaphthene is obtained from 4-ethoxy-2-thioglycol-1-carboxylic acid by bromination and ring closure. 4-Methyl-5 : 6-dichloro-3-oxythionaphthene is obtained from 1-methyl-2-amino-3-chlorobenzene-5-sulphonic acid by exchanging the amino group for chlorine, converting the sulphonic acid into the thioglycollic acid and effecting ring closure in known manner. Specifications 28240/06 and 10541/07 are referred to.
GB19818/24A 1923-09-17 1924-08-21 Manufacture of vat dyestuffs containing sulphur Expired GB222094A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE222094X 1923-09-17

Publications (1)

Publication Number Publication Date
GB222094A true GB222094A (en) 1925-08-27

Family

ID=5843578

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19818/24A Expired GB222094A (en) 1923-09-17 1924-08-21 Manufacture of vat dyestuffs containing sulphur

Country Status (1)

Country Link
GB (1) GB222094A (en)

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