Abstract:
BASIC DYES OF THE INDAZOLE SERIES OF THE FORMULA
(1,2-DI(A-),3-(K-N=N-),R3-1H-INDAZOLE)(+) X(-)
WHEREIN A IN METHYL, ETHYL OR A HYDROXYETHYL GROUP WHICH MAY BE FURTHER SUBSTITUTED WITH THE PRIVOSO THAT NOT MORE THAN ONE A IS METHYL OR ETHYL, R2 IS HYDROGEN, METHYL, METHOXY, CHLORO, NITRO, OR SO2R WHERE R IS AN AMINO RADICAL OR AN ALKYL OR ARYL RADICAL K IS A NITROGENEOUS COUPLING COMPONENT WHICH COMPLETES THE DYE MOLECULE ACID FORM A DIAZACYANINE SYSTEM AND X$ IS A COLORLESS ACID ANION. THE ORANGE TO BLUE DYES HAVE EXCELLENT FASTNESS PROPERTIES AND ARE SUITABLE FOR DYEING ANIONICALLY MODIFIED TEXTILE FIBERS, PARTICULARLY ACRYLONITRILE POLYMERS AND POLYESTERS.
Abstract:
2,3,6- AND PREFERABLY ALSO 4-SUBSTITUTED PYRIDINE DERIVATIVES BEARING THE RADICAL OF AMMONIA OR A PRIMARY AMINE IN THE 2- AND 6-POSITIONS. The compounds are eminently suitable as coupling components for the production of azo dyes, the coupling taking place in the 5-position.
Abstract:
Azo dyes of the diaminopyrimidine series which may be exemplified by the formula
OR
IN WHICH Y is an electron-attracting substituent such as nitro, cyano, methylsulfonyl or the like and B is hydrogen or a substituent such as an alkyl, benzyl or phenyl group. The phenyl diazo component may also contain additional substituents and other readily available diazo components may replace the phenyl diazo component. The amino groups may also be substituted by replacement of one or both hydrogen atoms. These dyes are useful as disperse dyes for synthetic fibers, particularly polyesters. The dyes give yellow to blue violet shades having excellent fastness properties.
Abstract:
MANUFACTURE OF 3-BENZIMIDAZOYL-COUMARINS COMPRISING THE CONDENSATION OF AN O-HDROXYBENZALDEHYDE OR OHYDROXYNAPHTHALDEHYDE WITH A 2-CYANOMETHYLBENZIMIDAZOLE IN ACIDIC MEDIUM. THE PRODUCTS ARE USEFUL AS FLUORESCENT DYES.