GB955023A - Process for producing direct dyeing black dyestuffs of the dibenzanthrone series - Google Patents

Process for producing direct dyeing black dyestuffs of the dibenzanthrone series

Info

Publication number
GB955023A
GB955023A GB1924462A GB1924462A GB955023A GB 955023 A GB955023 A GB 955023A GB 1924462 A GB1924462 A GB 1924462A GB 1924462 A GB1924462 A GB 1924462A GB 955023 A GB955023 A GB 955023A
Authority
GB
United Kingdom
Prior art keywords
direct dyeing
producing direct
acid
dyeing black
black dyestuffs
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
GB1924462A
Inventor
Joseph Salvatore Milazzo
David Irwin Randall
John Hampton Shown
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.)
GAF Chemicals Corp
Original Assignee
General Aniline and Film Corp
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 General Aniline and Film Corp filed Critical General Aniline and Film Corp
Priority to GB1924462A priority Critical patent/GB955023A/en
Priority to DEG35151A priority patent/DE1210107B/en
Publication of GB955023A publication Critical patent/GB955023A/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
    • C09B3/00—Dyes with an anthracene nucleus condensed with one or more carbocyclic rings
    • C09B3/22—Dibenzanthrones; Isodibenzanthrones
    • C09B3/30—Preparation from starting materials already containing the dibenzanthrone or isodibenzanthrone nucleus

Landscapes

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

Abstract

Direct dyeing black dyestuffs are made by subjecting a slurry of dibenzanthrone, isodibenzanthrone or a halogen substituted derivative thereof in sulphuric acid of about 40% to 65% of concentration to treatment with about 20 to 65 parts of mixed nitration acid for each 45 parts of the said starting compound. The mixed nitration acid consists of about one third nitric acid and two thirds sulphuric acid. Examples are given.
GB1924462A 1962-05-18 1962-05-18 Process for producing direct dyeing black dyestuffs of the dibenzanthrone series Expired GB955023A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1924462A GB955023A (en) 1962-05-18 1962-05-18 Process for producing direct dyeing black dyestuffs of the dibenzanthrone series
DEG35151A DE1210107B (en) 1962-05-18 1962-06-07 Process for the production of black direct dyes

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1924462A GB955023A (en) 1962-05-18 1962-05-18 Process for producing direct dyeing black dyestuffs of the dibenzanthrone series

Publications (1)

Publication Number Publication Date
GB955023A true GB955023A (en) 1964-04-08

Family

ID=10126126

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1924462A Expired GB955023A (en) 1962-05-18 1962-05-18 Process for producing direct dyeing black dyestuffs of the dibenzanthrone series

Country Status (1)

Country Link
GB (1) GB955023A (en)

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