GB1381790A - Production of azo dyestuffs - Google Patents

Production of azo dyestuffs

Info

Publication number
GB1381790A
GB1381790A GB2391772A GB2391772A GB1381790A GB 1381790 A GB1381790 A GB 1381790A GB 2391772 A GB2391772 A GB 2391772A GB 2391772 A GB2391772 A GB 2391772A GB 1381790 A GB1381790 A GB 1381790A
Authority
GB
United Kingdom
Prior art keywords
naphthol
effected
reacting
amino
reaction
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
GB2391772A
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.)
VYZK USTAV ORGAN SYNTEZ
Vyzkumny Ustav Organickych Syntez AS
Original Assignee
VYZK USTAV ORGAN SYNTEZ
Vyzkumny Ustav Organickych Syntez AS
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 VYZK USTAV ORGAN SYNTEZ, Vyzkumny Ustav Organickych Syntez AS filed Critical VYZK USTAV ORGAN SYNTEZ
Publication of GB1381790A publication Critical patent/GB1381790A/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
    • C09B41/00—Special methods of performing the coupling reaction
    • C09B41/006—Special methods of performing the coupling reaction characterised by process features
    • C09B41/007—Special methods of performing the coupling reaction characterised by process features including condition or time responsive control, e.g. automatically controlled processes; Stepwise coupling

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

1381790 Azo dyestuff production VYZKUMNY USTAV ORGANICKYCH SYNTEZ 22 May 1972 [21 May 1971] 23917/72 Heading C4P In the method of producing an azo dyestuff by (a) reacting an aromatic amine with a diazotizing agent to form a diazo compound and (b) reacting the diazo compound with a coupling component to form the dyestuff, either or both of processes (a) and (b) is effected by forming stores of the liquid reactants and performing a succession of reaction cycles each including feeding portions of the liquids in the stores to a reaction zone and discharging the resulting liquid from the reaction zone. Preferably the duration of each reaction cycle is not more than 12 minutes and the reactions are effected without any applied heating or cooling. In examples diazo components used are sulphanilic acid, 6-chloro-2- amino-toluene and 6-nitro-1-amino-2-naphthol- -4-sulphonic acid and the respective coupling components are 2-naphol, 2-hydroxy-3-naphthoic acid and 1-naphthol.
GB2391772A 1971-05-21 1972-05-22 Production of azo dyestuffs Expired GB1381790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CS3719A CS150061B1 (en) 1971-05-21 1971-05-21

Publications (1)

Publication Number Publication Date
GB1381790A true GB1381790A (en) 1975-01-29

Family

ID=5378068

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2391772A Expired GB1381790A (en) 1971-05-21 1972-05-22 Production of azo dyestuffs

Country Status (6)

Country Link
CH (1) CH566373A5 (en)
CS (1) CS150061B1 (en)
DE (1) DE2224643A1 (en)
FR (1) FR2138777B1 (en)
GB (1) GB1381790A (en)
IT (1) IT955711B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008495A1 (en) * 2004-07-20 2006-01-26 Fujifilm Imaging Colorants Limited Manufacturing process

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2439222A1 (en) * 1978-10-17 1980-05-16 Ugine Kuhlmann Azo dyes prepn. - by diazotising aromatic prim. amine and coupling with aryl:aliphatic, benzenoid, naphthalenic or heterocyclic cpd.

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2006008495A1 (en) * 2004-07-20 2006-01-26 Fujifilm Imaging Colorants Limited Manufacturing process
US7772376B2 (en) 2004-07-20 2010-08-10 Fujifilm Imaging Colorants Limited Manufacturing process

Also Published As

Publication number Publication date
FR2138777B1 (en) 1980-03-14
DE2224643A1 (en) 1972-12-07
CS150061B1 (en) 1973-09-04
FR2138777A1 (en) 1973-01-05
IT955711B (en) 1973-09-29
CH566373A5 (en) 1975-09-15

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Legal Events

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