GB1209264A - Disazo dyes, their production and use - Google Patents

Disazo dyes, their production and use

Info

Publication number
GB1209264A
GB1209264A GB195968A GB195968A GB1209264A GB 1209264 A GB1209264 A GB 1209264A GB 195968 A GB195968 A GB 195968A GB 195968 A GB195968 A GB 195968A GB 1209264 A GB1209264 A GB 1209264A
Authority
GB
United Kingdom
Prior art keywords
production
disazo dyes
diamino
jan
dibenzothiophene
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
GB195968A
Inventor
Willy Forter
Fritz Kehrer
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.)
Sandoz AG
Original Assignee
Sandoz 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 Sandoz AG filed Critical Sandoz AG
Publication of GB1209264A publication Critical patent/GB1209264A/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
    • C09B35/00—Disazo and polyazo dyes of the type A<-D->B prepared by diazotising and coupling
    • C09B35/02—Disazo dyes
    • C09B35/039—Disazo dyes characterised by the tetrazo component
    • C09B35/34—Disazo dyes characterised by the tetrazo component the tetrazo component being heterocyclic

Abstract

1,209,264. Substituted dibenzothiophene-5- dioxides. SANDOZ Ltd. 12 Jan., 1968 [27 Jan., 1967], No. 1959/68. Heading C2. [Also in Divisions C3 and C4-C5] 2,7 - Diamino - 3,6 - dichloro - dibenzothiophene-5-dioxide is prepared by treating 4,4<SP>1</SP>- diamino - 3,3<SP>1 </SP>- dichlorodiphenyl with oleum. The 3,6-dibromo compound is also specified.
GB195968A 1967-01-27 1968-01-12 Disazo dyes, their production and use Expired GB1209264A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH129167A CH481181A (en) 1967-01-27 1967-01-27 Process for the preparation of disazo dyes

Publications (1)

Publication Number Publication Date
GB1209264A true GB1209264A (en) 1970-10-21

Family

ID=4206985

Family Applications (1)

Application Number Title Priority Date Filing Date
GB195968A Expired GB1209264A (en) 1967-01-27 1968-01-12 Disazo dyes, their production and use

Country Status (4)

Country Link
CH (1) CH481181A (en)
DE (1) DE1644382A1 (en)
FR (1) FR1552521A (en)
GB (1) GB1209264A (en)

Also Published As

Publication number Publication date
FR1552521A (en) 1969-01-03
CH481181A (en) 1969-11-15
DE1644382A1 (en) 1970-12-03

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee