Back to results
US 5,958,120 AGranted
Ink compositions with improved waterfastness
AssigneeXerox Corporation
InventorsKurt B. Gundlach, Richard L. Colt, Luis A. Sanchez
Life of this patent
Estimating the term…
Abstract
Disclosed is an ink composition which comprises (a) water; (b) a colorant selected from the group consisting of reactive dyes having terminal vinyl sulfate groups and mixtures thereof; (c) N,N'-bis(3-aminopropyl)-1,2-ethylenediamine; (d) imidazole; (e) phosphorous acid or a phosphite salt; (f) tripropylene glycol monomethyl ether; and (g) a salt selected from Zn.sup.2+ salts and mixtures thereof. Also disclosed is an ink jet printing process employing the ink.
Claims19
An ink composition which comprises (a) water;
- (b) a colorant selected from the group consisting of reactive dyes having terminal vinyl sulfate groups and mixtures thereof;
- (c) N,N'-bis(3-aminopropyl)-1,2-ethylenediamine;
- (d) imidazole;
- (e) phosphorous acid or a phosphite salt;
- (f) tripropylene glycol monomethyl ether;
- and (g) a salt selected from the group consisting of Zn.sup.2+ salts and mixtures thereof.
3 more elements
An ink composition prepared by admixing (a) water;
- (b) a colorant selected from the group consisting of reactive dyes having terminal vinyl sulfate groups and mixtures thereof;
- (c) N,N'-bis(3-aminopropyl)-1,2-ethylenediamine;
- (d) imidazole;
- (e) phosphorous acid;
- (f) tripropylene glycol monomethyl ether;
- and (g) a salt selected from the group consisting of Zn.sup.2+ salts and mixtures thereof.
3 more elements
Dependencies are inferred from the claim text.