GB299791A - Manufacture of azo-dyestuffs - Google Patents

Manufacture of azo-dyestuffs

Info

Publication number
GB299791A
GB299791A GB31659/28A GB3165928A GB299791A GB 299791 A GB299791 A GB 299791A GB 31659/28 A GB31659/28 A GB 31659/28A GB 3165928 A GB3165928 A GB 3165928A GB 299791 A GB299791 A GB 299791A
Authority
GB
United Kingdom
Prior art keywords
acid
cleve
grey
component
naphthylamine
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
GB31659/28A
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 Schweiz AG
Original Assignee
Gesellschaft fuer Chemische Industrie in Basel CIBA
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 Gesellschaft fuer Chemische Industrie in Basel CIBA filed Critical Gesellschaft fuer Chemische Industrie in Basel CIBA
Publication of GB299791A publication Critical patent/GB299791A/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
    • C09B31/00—Disazo and polyazo dyes of the type A->B->C, A->B->C->D, or the like, prepared by diazotising and coupling
    • C09B31/16—Trisazo dyes
    • C09B31/22—Trisazo dyes from a coupling component "D" containing directive hydroxyl and amino groups

Abstract

299,791. Soc. of Chemical Industry in Basle. Oct. 31, 1927, [Convention date]. Azo dyes.-Direct dyes for cotton are obtained by coupling a diazo compound of the benzene or naphthalene series containing no hydroxyl group with a further diazotixable component of the benzene or naphthalene series containing no hydroxyl group, rediazotizing, coupling with a further diazotizable component containing no hydroxyl group, rediazotizing, and coupling with 1 :5 : 7-aminonaphtholsulphonic acid in an acid, neutral, or alkaline medium. The products give uniform grey to blue-grey and green-grey dyeings from neutral or feebly alkaline baths. The following examples are specified. (1) 'The dyestuff aniline -> Cleve's acid # Cleve's acid -> (alkaline) 1: 5 : 7-acid dyes cotton green-grey; similar dyestuffs are obtained when the aniline is replaced by a toluidine, p-aminoacetanilide, or a sulphonic acid of aniline, a toluidine., p-nitraniline, an acetylphenylenediamine, a p-aminophenyloxamic acid, or corresponding naphthalene derivatives, and the Cleve's acid by a-naphthylamine or 1-amino-2-methoxy-5-methylbenzene. (2) The dyestuff 2-aminonaphthalene-4: 8-disulphonic acid # a-naphthylamine # Cleve's acid # (acid) 1 : 5 : 7-aoid dyes cotton a greenish blue-grey, and the dyeing may be further diazotized; the first component mav be replaced by a- or #-naphthylamine or a sulphonic acid thereof, and other middle components containing no hydroxyl group may be used. A table is given showing the properties of the dyestuffs obtained by using various components and the colours of the corresponding dyeings on cotton, specified first components being metanilic acid, 2-aminonaphtbalene-4 : 8-disulphonic acid, aniline, and Cleve's acid, specified second components Cleve's acid and a-naphthylamine, specified third component Cleve's acid, and the fourth component being coupled (1) alkaline, (2) acid, in each case. Specifications 25780/01 and 3654/03 are referred to. The Specification as open to inspection under Sect. 91 (3) (a) includes also the use of diazo and middle componets of the benzene series in general. This subject-matter does not appear in the Specification as accepted.
GB31659/28A 1927-10-31 1928-10-31 Manufacture of azo-dyestuffs Expired GB299791A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH299791X 1927-10-31

Publications (1)

Publication Number Publication Date
GB299791A true GB299791A (en) 1929-11-21

Family

ID=4490439

Family Applications (1)

Application Number Title Priority Date Filing Date
GB31659/28A Expired GB299791A (en) 1927-10-31 1928-10-31 Manufacture of azo-dyestuffs

Country Status (1)

Country Link
GB (1) GB299791A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1716211B1 (en) * 2003-12-04 2018-02-28 Archroma IP GmbH Concentrated aqueous compositions of dyestuffs

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1716211B1 (en) * 2003-12-04 2018-02-28 Archroma IP GmbH Concentrated aqueous compositions of dyestuffs

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