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US 3,980,636 AGranted
Phenyl-azo-aniline dyes
AssigneeEastman Kodak Company
InventorsMax A. Weaver, Clarence A. Coates, Jr.
Life of this patent
Estimating the term…
Abstract
Azo compounds having the formula ##SPC1## In which X and Y are hydrogen or a substituent, R.sup.1 is alkyl or R.sup.4 , R.sup.2 is hydrogen, alkyl or alkoxy, R.sup.3 is hydrogen or alkyl, and R.sup.4 is aryl, cyclohexyl, alkoxy, benzyl, 2-furyl or --R.sup.5 --O--Z in which R.sup.5 is alkylene and Z is aryl. The compounds are useful for dyeing polyester fibers and exhibit good dyeability, fastness to light and resistance to sublimation.
Claims8
A compound having the formula ##SPC9##
- wherein
- X is hydrogen, chlorine, bromine, cyano, lower alkylsulfonyl, nitro;
- Y is hydrogen or cyano;
- R.sup.1 is lower alkyl;
- lower alkyl substituted with chlorine, hydroxy, lower alkoxy, lower alkanoyloxy, cyano or carbamoyl;
- or a group represented by R.sup.4 ;
- R.sup.2 is hydrogen, lower alkyl or lower alkoxy;
- R.sup.3 is hydrogen or alkyl of up to eight carbon atoms;
- and
- R.sup.4 is aryl, cyclohexyl, lower alkoxy, benzyl, or the group --R.sup.5 --O--Z in which R.sup.5 is alkylene of up to six carbon atoms and Z is aryl;
- in which
- each aryl group is phenyl or phenyl substituted with lower alkyl, lower alkoxy, chlorine, or bromine.
9 more elements
Dependencies are inferred from the claim text.