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US 4,097,231 AGranted
Metal-containing polypropylene dyed with monoazo 1-aryl-3-alkyl-5-pyrazolones
AssigneeAmerican Color & Chemical Corporation
InventorRaouf Botros
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Abstract
Metal-containing polypropylene fibers dyed with monoazo 1-aryl-3-alkyl-5-pyrazolone compounds of the structure: ##STR1## where R is hydrogen or lower alkoxy, R" is lower alkyl, X is hydrogen or halogen, and X' is hydrogen or halogen Are provided. The dyed metal-containing polypropylene fibers have bright yellowish hues of outstanding crock fastness, light fastness and fastness to dry cleaning solvents.
Claims5
Dyed metal-containing polypropylene fibers, the dye being of the structure:
- ##STR10## where R is H or alkoxy of 1-4 carbons,
- R" is alkyl of 1-4 carbons,
- X is H, chloro or bromo, and
- X' is H, chloro or bromo;
- and the metal of said metal-containing polypropylene fibers being selected from the group consisting of chromium, cobalt, nickel, aluminum and zinc.
2 more elements
Dependencies are inferred from the claim text.