GB240459A - - Google Patents

Info

Publication number
GB240459A
GB240459A GB23672/25A GB2367225A GB240459A GB 240459 A GB240459 A GB 240459A GB 23672/25 A GB23672/25 A GB 23672/25A GB 2367225 A GB2367225 A GB 2367225A GB 240459 A GB240459 A GB 240459A
Authority
GB
United Kingdom
Prior art keywords
molasses
dyestuff
leuco compound
dextrin
vacuo
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
GB23672/25A
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.)
FARBWERKE
Original Assignee
FARBWERKE
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 FARBWERKE filed Critical FARBWERKE
Publication of GB240459A publication Critical patent/GB240459A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

Readily soluble, stable dry quinone vat dye preparations are obtained by heating for a prolonged time an alkali salt of the leuco compound of the dyestuff in presence of water, free alkali, and a protective colloid such as molasses, sugar, sulphite cellulose lye, dextrin, albumen or the like, and then evaporating to dryness, preferably in vacuo. In examples the leuco compound of the brown sulphurized vat dyestuff from dianilidodichloroquinone, or of the yellow pp-dichlordianilidoquinone (Specification 9116/11), or of the red p-chloranilidonaphoquinone is heated with caustic soda and molasses, dextrin, or other protective colloid to at least 90 DEG C., the temperature allowed to fall, and the mass evaporated in vacuo. A further example shows the heating of the leuco compound of the dyestuff prepared according to example 2 of Specification 22528/13 with caustic soda and molasses to 75-80 DEG C. and subsequent drying as before. The preparations are for use on wool. Specifications 171,058 and 177,526 also are referred to. p-Chloranilidonaphthoquinone is obtained by condensing a -naphthoquinone with p-chloraniline in presence of boiling alcohol.
GB23672/25A 1924-09-24 1925-09-22 Expired GB240459A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE240459X 1924-09-24

Publications (1)

Publication Number Publication Date
GB240459A true GB240459A (en) 1926-09-09

Family

ID=5906191

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23672/25A Expired GB240459A (en) 1924-09-24 1925-09-22

Country Status (1)

Country Link
GB (1) GB240459A (en)

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