GB405092A - Manufacture of vat-dyestuff preparations - Google Patents

Manufacture of vat-dyestuff preparations

Info

Publication number
GB405092A
GB405092A GB34177/32A GB3417732A GB405092A GB 405092 A GB405092 A GB 405092A GB 34177/32 A GB34177/32 A GB 34177/32A GB 3417732 A GB3417732 A GB 3417732A GB 405092 A GB405092 A GB 405092A
Authority
GB
United Kingdom
Prior art keywords
acid
pastes
dyestuff
stable reduction
benzylsulphanilic
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
GB34177/32A
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Publication of GB405092A publication Critical patent/GB405092A/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
    • C09B67/00—Influencing the physical, e.g. the dyeing or printing properties of dyestuffs without chemical reactions, e.g. by treating with solvents grinding or grinding assistants, coating of pigments or dyes; Process features in the making of dyestuff preparations; Dyestuff preparations of a special physical nature, e.g. tablets, films
    • C09B67/0071—Process features in the making of dyestuff preparations; Dehydrating agents; Dispersing agents; Dustfree compositions
    • C09B67/0077—Preparations with possibly reduced vat, sulfur or indigo dyes

Landscapes

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

Abstract

Vat-dyestuff pastes are prepared by making a stable reduction product of a dyestuff of the general formula:-- <FORM:0405092/IV/1> wherein X stands for alkyl or hydrogen, and R for an aromatic nucleus, especially a benzene nucleus, which may be substituted, into an aqueous paste and incorporating therein a derivative of zinc, iron or copper (with the exception of copper sulphate), and a water-soluble derivative of benzylsulphanilic acid, dimethylsulphanilic acid or a -naphthalene sulphonic acid. The term "stable reduction products" refers to the products obtainable from 4.4<1> - dimethyl - 6.6<1> - dihalogenindigos by the processes of Specifications 334,878, 334,919, and 338,104, [all in Class 2 (iii), Dyes &c.], or obtainable in an analogous manner from other dyestuffs of the above general formula. These pastes retain good printing capacity on storage. In an example the stable reduction product of 6.6<1>-dichloro-4.4<1>-dimethylthioindigo is mixed up in an aqueous paste with ferrous sulphate, glycerin and sodium benzylsulphanilate. Specification 389,915 also is referred to. The Specification as open to inspection under Sect. 91 refers to the use in the above pastes of a water-soluble derivative of benzylsulphanilic acid or another hydrotropic substance, but this subject-matter does not appear in the Specification as accepted.
GB34177/32A 1931-12-02 1932-12-02 Manufacture of vat-dyestuff preparations Expired GB405092A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE405092X 1931-12-02

Publications (1)

Publication Number Publication Date
GB405092A true GB405092A (en) 1934-02-01

Family

ID=6421871

Family Applications (1)

Application Number Title Priority Date Filing Date
GB34177/32A Expired GB405092A (en) 1931-12-02 1932-12-02 Manufacture of vat-dyestuff preparations

Country Status (1)

Country Link
GB (1) GB405092A (en)

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