The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 24, 1981
Filed:
Dec. 05, 1979
Ralph R Giles, Kingsport, TN (US);
Max A Weaver, Kingsport, TN (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
This invention relates to azo dyes particularly useful for dyeing polyamide fiber, wool and the like, in which the diazotized amino component bears sulfated hydroxyalkoxycarbonyl or N-(hydroxyalkyl)carbamoyl groups on its ring. These dyes have excellent dyeing properties on polyamide fibers and also impart color to cellulose acetate fibers and wool. The dyes correspond to the formula: ##STR1## wherein R.sup.1 and R represent a large variety of groups; X' is O, NH, N(alkyl)- or N(aryl)-; Z is selected from straight- or branched-chain alkylene which may be substituted, for example, with phenyl, halogen, OSO.sub.3 M, alkoxy, aryloxy and the like; M is H, Na, K or NH.sub.4 ; n is 1 or 2; and the coupler C is selected from a variety of couplers including anilines, tetrahydroquinolines, phenols and the like.