GB329364A - Improvements in the manufacture and production of vat dyestuffs - Google Patents

Improvements in the manufacture and production of vat dyestuffs

Info

Publication number
GB329364A
GB329364A GB191629A GB191629A GB329364A GB 329364 A GB329364 A GB 329364A GB 191629 A GB191629 A GB 191629A GB 191629 A GB191629 A GB 191629A GB 329364 A GB329364 A GB 329364A
Authority
GB
United Kingdom
Prior art keywords
acid
shades
dyestuff
vat
vat 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
GB191629A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie 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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB191629A priority Critical patent/GB329364A/en
Publication of GB329364A publication Critical patent/GB329364A/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
    • C09B57/12—Perinones, i.e. naphthoylene-aryl-imidazoles

Landscapes

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

Abstract

329,364. Johnson, J. Y., (1. G. Farbenindustrie Akt.-Ges.). Jan. 19, 1929. Naphthalene, dyes derived from.- Vat dyestuffs giving orange shades are obtained by treating the red vat-dyestuff prepared by condensing the dianhydride of 1:4:5: 8-naphthalene tetracarboxylic acid with o-phenylene diamine, with acid oxidising agents. Mild oxidising conditions give products dyeing more reddish-orange shades and more vigorous oxidising conditions result in products dyeing more yellowish shades. The process is described in examples in which the dyestuff is oxidized in sulphuric acid solution with chromic acid and permanganate.
GB191629A 1929-01-19 1929-01-19 Improvements in the manufacture and production of vat dyestuffs Expired GB329364A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB191629A GB329364A (en) 1929-01-19 1929-01-19 Improvements in the manufacture and production of vat dyestuffs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191629A GB329364A (en) 1929-01-19 1929-01-19 Improvements in the manufacture and production of vat dyestuffs

Publications (1)

Publication Number Publication Date
GB329364A true GB329364A (en) 1930-05-19

Family

ID=9730260

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191629A Expired GB329364A (en) 1929-01-19 1929-01-19 Improvements in the manufacture and production of vat dyestuffs

Country Status (1)

Country Link
GB (1) GB329364A (en)

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