Claims
- 1. A metal free azo dyestuff of the formula ##STR43## in which K is the radical of a pyridone or pyrimidene coupling component, and
- R.sub.3 and R.sub.4 each independently is hydrogen; C.sub.1 -C.sub.6 -alkyl; C.sub.1 -C.sub.6 -alkyl substituted by OH, SO.sub.3 H, COOH or OSO.sub.3 H; phenyl; naphthyl; or phenyl or naphthyl substituted by SO.sub.3 H or COOH.
- 2. A dyestuff according to claim 1, in which ##STR44##
Priority Claims (1)
Number |
Date |
Country |
Kind |
2901547 |
Jan 1979 |
DEX |
|
Parent Case Info
This is a continuation of application Ser. No. 108,311, filed Dec. 31, 1979, now abandoned.
US Referenced Citations (5)
Foreign Referenced Citations (8)
Number |
Date |
Country |
646359 |
Aug 1962 |
CAX |
2809200 |
Sep 1963 |
DEX |
1153842 |
Sep 1963 |
DEX |
2927102 |
Jan 1980 |
DEX |
2173255 |
Oct 1973 |
FRX |
859198 |
Jan 1961 |
GBX |
1033264 |
Jun 1966 |
GBX |
1421923 |
Jan 1976 |
GBX |
Continuations (1)
|
Number |
Date |
Country |
Parent |
108311 |
Dec 1979 |
|