US 4,749,784 A · Alkanol substituted disazo orange dye for nylon

Abstract

The specification describes a new group of alkanol substituted disazo compounds that are useful in dyeing polyamide textile fibers in orange hues. The new compounds are compatible with several acid blue dyes and several acid red dyes that are commercially important as dyes for nylon. The new compounds are particularly well suited for use as the "yellow" component in trichromatic systems for dying polyamide carpeting and other textiles. The new compounds are relatively inexpensive to make and have outstanding application and fastness properties. Other aspects of the specification are concerned with a method of making the new compounds and with a method of dyeing polyamides with said compounds and to the novel dyed polyamides resulting from the use of the new group of compounds as dyes.

Claims18

Dependent claims

A compound of the formula:

##STR26## wherein R is --H, --CH.sub.3, --CH.sub.2 CH.sub.3, --C.sub.6 H.sub.5, or --CH.sub.2 OH;
R.sub.1 is --H or R.sub.16, wherein
R.sub.16 is --CH.sub.3, --CH.sub.2 CH.sub.3, --CH.sub.2 CH.sub.2 OH, ##STR27## --SO.sub.2 lower alkyl, --SO.sub.2 phenyl, or --SO.sub.2 phenyl substituted with one or more halo, lower alkyl, or lower alkoxy groups;
R.sub.2 is --H, -lower alkyl, -lower alkoxy, or --Cl;
R.sub.3 is --H, -lower alkyl, -lower alkoxy, or --Cl;
R.sub.4 is --H, --CH.sub.3, --CH.sub.2 CH.sub.3, or ##STR28## R.sub.11 is --H or -lower alkyl;
M is --H, --Li, --Na, --K, NH.sub.4, or --N(R.sub.5).sub.4,
wherein
R.sub.5 is --H or ##STR29## R.sub.6 is --H, --CH.sub.3, or --CH.sub.2 CH.sub.3 ;
n is 1, 2, 3, or 4;
and
OR.sub.1 is ortho to the azo, a substituent selected from the group lower alkyl, -lower alkoxy, or --Cl must be present para to the OR.sub.1 group.

9 more elements

Dependencies are inferred from the claim text.

Alkanol substituted disazo orange dye for nylon

Life of this patent

Alkanol substituted disazo orange dye for nylon

Life of this patent

Abstract

Claims18