GB256989A - Manufacture of vat-dyestuffs - Google Patents

Manufacture of vat-dyestuffs

Info

Publication number
GB256989A
GB256989A GB20032/26A GB2003226A GB256989A GB 256989 A GB256989 A GB 256989A GB 20032/26 A GB20032/26 A GB 20032/26A GB 2003226 A GB2003226 A GB 2003226A GB 256989 A GB256989 A GB 256989A
Authority
GB
United Kingdom
Prior art keywords
phenylenediamine
dianhydride
condensed
vat
diamine
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
GB20032/26A
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
Publication of GB256989A publication Critical patent/GB256989A/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)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Nitrogen Condensed Heterocyclic Rings (AREA)

Abstract

256,989. I. G. Farbenindustrie Akt.- Ges., (Assignees of Farbwerke vorm. Meister, Lucius, & Br³ning). July 21, 1924, [Convention date]. Addition to 237,294. Void [Published under Sect. 91 of the Acts]. Naphthalene, dyes derived from.-The process of the parent Specification, according to which the dianhydride of naphthalene-1 : 4 : 5 : 8-tetracarboxylic acid is condensed with an o-diamine, is modified by substituting for the dianhydride the free acid, or for the o-diamine a salt thereof. According to examples the acid is condensed with o-phenylenediamine or with 4-methyl-o-phenylenediamine and the dianhydride is condensed with o-phenylenediamine hydrochloride or with 4- methoxy-o-phenylenediamine hydrochloride, in each case in nitrobenzene; the latter may be omitted. The products dye cotton from the vat in red or reddish-brown shades.
GB20032/26A 1924-07-21 1925-07-21 Manufacture of vat-dyestuffs Expired GB256989A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE256989X 1924-07-21

Publications (1)

Publication Number Publication Date
GB256989A true GB256989A (en) 1927-06-23

Family

ID=5966434

Family Applications (1)

Application Number Title Priority Date Filing Date
GB20032/26A Expired GB256989A (en) 1924-07-21 1925-07-21 Manufacture of vat-dyestuffs

Country Status (1)

Country Link
GB (1) GB256989A (en)

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