GB888499A - Benzene monoazo pyrazole dyestuffs - Google Patents

Benzene monoazo pyrazole dyestuffs

Info

Publication number
GB888499A
GB888499A GB19824/60A GB1982460A GB888499A GB 888499 A GB888499 A GB 888499A GB 19824/60 A GB19824/60 A GB 19824/60A GB 1982460 A GB1982460 A GB 1982460A GB 888499 A GB888499 A GB 888499A
Authority
GB
United Kingdom
Prior art keywords
dyes
sulpho
monoazo
dyestuffs
pyrazole
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
GB19824/60A
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.)
Bayer AG
Original Assignee
Bayer 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 Bayer AG filed Critical Bayer AG
Publication of GB888499A publication Critical patent/GB888499A/en
Expired legal-status Critical Current

Links

Abstract

The invention comprises dyes of formula <FORM:0888499/IV (c)/1> wherein R is the residue of a sulphoaryl compound which may be nuclear substituted. The dyes are made by diazotising a 2-aniline-1-sulphonic acid phenyl ester and coupling with a 1-(sulphoaryl)-3-methyl-5-aminopyrazole in acid to neutral solution. Indicative of specified coupling components are 1-(21-, 31- and 41-sulpho- and 21,51dichloro-41-sulpho)- and 1-(81 sulpho - 21 - naphthyl) - 3 - methyl - 5 - amino - pyrazoles. The dyes colour wool, from an acid or neutral bath, in yellow shades. Examples are provided of the preparation of the dyes and their use in colouring processes. Reference has been directed by the Comptroller to Specification 844,427.
GB19824/60A 1959-06-26 1960-06-03 Benzene monoazo pyrazole dyestuffs Expired GB888499A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE888499X 1959-06-26

Publications (1)

Publication Number Publication Date
GB888499A true GB888499A (en) 1962-01-31

Family

ID=6834108

Family Applications (1)

Application Number Title Priority Date Filing Date
GB19824/60A Expired GB888499A (en) 1959-06-26 1960-06-03 Benzene monoazo pyrazole dyestuffs

Country Status (1)

Country Link
GB (1) GB888499A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159265A (en) 1973-07-14 1979-06-26 Bayer Aktiengesellschaft Phenylazopyrazolo dyestuffs including disulfimide substituent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4159265A (en) 1973-07-14 1979-06-26 Bayer Aktiengesellschaft Phenylazopyrazolo dyestuffs including disulfimide substituent

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