Disazo dyes derived from 1-acyl-2,4-dihydroxybenzenes and metallized polyolefin dyed therewith
AssigneeAmerican Color & Chemical Corporation
InventorRaouf Botros
Life of this patent
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Abstract
Disazo dyes of the general formula: ##STR1## are provided where A is phenyl, naphthyl, phenyl substituted by up to 3 substituents or naphthyl substituted by up to 2 substituents; D is phenyl, naphthyl, or phenyl or naphthyl substituted by up to 2 substituents selected from alkyl of 1-4 carbon atoms, alkoxy of 1-4 carbon atoms or halogen and X is alkyl of 1-4 carbon atoms, benzyl or phenyl. The dyes when applied to metallized polyolefin fabrics, particularly nickel-containing polypropylene fabrics, produce strong bright shades which are exceptionally fast to light, dry cleaning, crocking, gas and heat.
Claims9
An acyldihydroxybenzene disazo dye of the formula:
- ##STR14## wherein A is phenyl, naphthyl, phenyl substituted by up to three substituents or naphthyl substituted by up to two substituents, said substituents being independently selected from alkyl of 1-4 carbons;
- alkoxy of 1-4 carbons;
- nitro;
- cyano;
- chloro;
- bromo;
- trifluoromethyl;
- hydroxy;
- RCOO--, where R is alkyl of 1-4 carbons;
- carboxy;
- and ROOC--, where R is alkyl of 1-4 carbons;
- D is phenyl, naphthyl, or phenyl or naphthyl substituted by up to 2 substituents independently selected from alkyl of 1-4 carbon atoms, alkoxy of 1-4 carbon atoms, chlorine or bromine;
- and
- X is alkyl of 1-4 carbon atoms, benzyl, phenyl or phenyl substituted by up to two substituents independently selected from alkyl of 1-4 carbon atoms, alkoxy of 1-4 carbon atoms, chloro and bromo.
Dependencies are inferred from the claim text.