Disazo compounds containing 3-amido-pyrazole-5-one components

Abstract

Abstract Disazo pigment of the general formula wherein X and Y represent hydrogen or halogen atoms, preferably chlorine atoms, alkyl groups, preferably methyl groups, alkoxy groups, preferably methoxy and ethoxy groups, or nitro groups, R represents benzoyl, hexahydrobenzoyl, alkanoyl, alkylsulfonyl, phenylacetyl, arylsulfonyl, aralkylsulfonyl, alkylcarbamoyl, arylcarbamoyl, alkylthiocarbamoyl or arylthiocarbamoyl groups and R1 represents a hydrogen atom or a phenyl ring which may be substituted by 1 - 3 alkyl, alkoxy, halogen or nitro groups and a process for preparing them which comprises bisdiazotizing diamines of the general formula AND COUPLING THEM WITH 2 MOLES OF A PYRAZOLONE DERIVATIVE OF THE FORMULA The new pigment pigments are suitable for the coloring of printing pastes, color lakes and dispersion paints, for the dyeing of plastics and natural resins or artificial resins, such as polymerization or condensation resins. They are furthermore suitable for the pigment printing on a substrate, especially on textile fibers. They may be used for the dyeing of artificial silk made from viscose or cellulose ethers or esters, polyamides, polyurethanes, polyglycol terephthalates or polyacrylonitrile in the spinning mass or for the dyeing of paper. The new pigments have extremely high tinctorial strengths with mostly very pure shades.

Inventors

• 👤 Wolfgang Rieper
• 👤 Joachim Ribka

Bibliographic Details