Patent Number: 6,251,173

Title: Ink compositions containing ultraviolet absorbers

Abstract: Ink compositions containing ultraviolet absorbing compounds of formula I ##STR1## wherein R.sub.1, R.sub.2 and R.sub.3 are defined herein, and wherein the compound contains one or two --SO.sub.3 M groups, one --SO.sub.3 M and one --CO.sub.2 M group, or two --CO.sub.2 M groups. Ink jet ink compositions containing ultraviolet absorbing compounds of formula IV ##STR2## wherein R.sub.2, R.sub.3, R.sub.4, R.sub.5 and R.sub.6 are defined herein, and wherein the compound contains one or two --SO.sub.3 M groups, one --SO.sub.3 M and one --CO.sub.2 M group or two --CO.sub.2 M groups, with the provision that either (1) R.sub.2 and R.sub.3 are not both hydrogen, or (2) R.sub.5 is not hydrogen. The ink compositions are adapted for ink jet printing.

Inventors: Holloway; Ann P. (Lexington, KY), Feeman; James F. (Wyomising, PA)

Assignee: Lexmark International, Inc.

International Classification: C09D 11/00 (20060101); C09D 011/02 (); F21V 009/06 ()

Expiration Date: 06/26/2018