GB168447A - The manufacture and production of new intermediate products and of new colouring matters therefrom and their application in dyeing and printing - Google Patents

The manufacture and production of new intermediate products and of new colouring matters therefrom and their application in dyeing and printing

Info

Publication number
GB168447A
GB168447A GB1629920A GB1629920A GB168447A GB 168447 A GB168447 A GB 168447A GB 1629920 A GB1629920 A GB 1629920A GB 1629920 A GB1629920 A GB 1629920A GB 168447 A GB168447 A GB 168447A
Authority
GB
United Kingdom
Prior art keywords
green
condensation product
product
printing
yellow
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
GB1629920A
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.)
BASF SE
Original Assignee
BASF SE
Badische Anilin and Sodafabrik 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 BASF SE, Badische Anilin and Sodafabrik AG filed Critical BASF SE
Priority to GB1629920A priority Critical patent/GB168447A/en
Publication of GB168447A publication Critical patent/GB168447A/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
    • C09B57/00—Other synthetic dyes of known constitution

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Coloring (AREA)

Abstract

a -Naphthoquinone, by heating with water, produces, in addition to a -naphthohydroquinone, a yellow condensation product, which forms an intermediate product for the preparation of dyestuffs. Subsequent treatment with acid or neutral reducing-agents converts the yellow product into a green compound, which is adapted for the preparation of pigments and paints; the same green condensation product is also obtained by protracted boiling of a -naphthoquinone with water, since the a -naphthohydroquinone formed is itself a reducing-agent. The green condensation product in the presence of alkaline reducing-agents furnishes a yellow vat which dyes fast green shades on vegetable and animal fibres; the green product may also be padded or printed on the fibre in known manner. Examples are given of dye vats for wool and cotton yarn by using the green condensation product in a bath of sodium sulphide or hydrosulphite; and of padding, printing, and discharge printing mixtures.ALSO:a -Naphthoquinone, by heating with water, produces, in addition to a -naphthohydroquinone, a yellow condensation product, which is converted into a green product by treatment with acid or neutral reducing agents. The same green condensation product is also obtained by protracted boiling of a -naphthoquinone with water, since the a -naphthohydroquinone formed is itself a reducing agent. The green condensation product in the presence of alkaline reducing agents furnishes a yellow vat which dyes fast green shades on vegetable and animal fibres; the green product may also be padded or printed on the fibre in known manner. Examples are given of dye vats for wool and cotton yarn by using the green condensation product in a bath of sodium sulphide or hydrosulphite; and of padding, printing and discharge printing mixtures.
GB1629920A 1920-06-16 1920-06-16 The manufacture and production of new intermediate products and of new colouring matters therefrom and their application in dyeing and printing Expired GB168447A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1629920A GB168447A (en) 1920-06-16 1920-06-16 The manufacture and production of new intermediate products and of new colouring matters therefrom and their application in dyeing and printing

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1629920A GB168447A (en) 1920-06-16 1920-06-16 The manufacture and production of new intermediate products and of new colouring matters therefrom and their application in dyeing and printing

Publications (1)

Publication Number Publication Date
GB168447A true GB168447A (en) 1921-09-08

Family

ID=10074802

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1629920A Expired GB168447A (en) 1920-06-16 1920-06-16 The manufacture and production of new intermediate products and of new colouring matters therefrom and their application in dyeing and printing

Country Status (1)

Country Link
GB (1) GB168447A (en)

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