GB420825A - New dyestuff intermediates - Google Patents

New dyestuff intermediates

Info

Publication number
GB420825A
GB420825A GB1640933A GB1640933A GB420825A GB 420825 A GB420825 A GB 420825A GB 1640933 A GB1640933 A GB 1640933A GB 1640933 A GB1640933 A GB 1640933A GB 420825 A GB420825 A GB 420825A
Authority
GB
United Kingdom
Prior art keywords
acid
aldehyde
diazotized
bisulphite
amino
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
GB1640933A
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.)
Imperial Chemical Industries Ltd
Original Assignee
Imperial Chemical Industries Ltd
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 Imperial Chemical Industries Ltd filed Critical Imperial Chemical Industries Ltd
Priority to GB1640933A priority Critical patent/GB420825A/en
Publication of GB420825A publication Critical patent/GB420825A/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
    • C09B29/00—Monoazo dyes prepared by diazotising and coupling
    • C09B29/06—Monoazo dyes prepared by diazotising and coupling from coupling components containing amino as the only directing group
    • C09B29/08—Amino benzenes

Abstract

Azoanthranilic acid is manufactured by coupling a diazotized 5-amino-2-acylaminobenzoic acid with an aldehyde-bisulphite compound of anthranilic acid and removing the aldehyde-bisulphite and acyl groups by hydrolysis, or by coupling diazotized 3-amino-6-nitrobenzoic acid with an aldehyde-bisulphite compound of anthranilic acid, reducing the nitrogroup and removing the aldehyde bisulphite group by hydrolysis. The product is an p intermediate for the production of metalliferous azo dyes containing two atoms of metal. In examples: (1) 5-aminoacetylanthranilic acid is diazotized and coupled with the monosodium salt of o -sulphomethylanthranilic acid and the product is boiled with caustic soda lye; (2) 3-amino-6-nitrobenzoic acid is diazotized and coupled with the monosodium salt of o -sulphomethylanthranilic acid and the product is boiled with caustic soda lye and then warmed with sodium sulphide solution. Specification 141,643, [Class 2 (iii)], is referred to. 5-Aminoacetylanthranilic acid may be obtained by the reduction of 5-nitroacetylanthranilic acid which is obtainable by the nitration of acetylanthranilic acid or by the oxidation of 5-nitroacetyl-o-toluidine.
GB1640933A 1933-06-07 1933-06-07 New dyestuff intermediates Expired GB420825A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1640933A GB420825A (en) 1933-06-07 1933-06-07 New dyestuff intermediates

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1640933A GB420825A (en) 1933-06-07 1933-06-07 New dyestuff intermediates

Publications (1)

Publication Number Publication Date
GB420825A true GB420825A (en) 1934-12-07

Family

ID=10076795

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1640933A Expired GB420825A (en) 1933-06-07 1933-06-07 New dyestuff intermediates

Country Status (1)

Country Link
GB (1) GB420825A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801890A (en) * 1993-12-15 1998-09-01 Fuji Photo Optical Co., Ltd. Taking lens system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5801890A (en) * 1993-12-15 1998-09-01 Fuji Photo Optical Co., Ltd. Taking lens system

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