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US 4,285,864 AGranted
Disulfonic phenyl-azo-naphthyl-azo-phenyl alkoxy dyes for polyamides
AssigneeCrompton & Knowles Corporation
InventorJames F. Feeman
Life of this patent
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Abstract
New compounds having the structure: ##STR1## (wherein R represents --H, alkyl, alkoxy or a halogen; R.sub.1 represents --H, alkyl, and R.sub.2 represents --H, alkyl or alkoxy) are useful as light fast orange dyes for polyamides and they are especially useful as dyes for differential-dyeing nylon carpeting and for wool.
Claims8
A compound having the structure:
- ##STR4## wherein R represents --H, --CH.sub.3 or --Cl;
- R.sub.1 represents --H or --CH.sub.3 ;
- R.sub.2 represents --H, --CH.sub.3 or --OCH.sub.3 ;
- R.sub.3 represents --CH.sub.3 or --C.sub.2 H.sub.5 and M represents --H, --Li, --Na, --K or --N--(R.sub.4).sub.4 wherein R.sub.4 rerepresents the same substituent or different substituents selected from the following:
- --H, --CH.sub.2 --CH.sub.2 OH, --CH.sub.2 CH(OH)CH.sub.3 or --CH CH.sub.2 OCH.sub.2 CH.sub.2 OH.
2 more elements
Dependencies are inferred from the claim text.