05725647 is referenced by 49 patents and cites 33 patents.

Pigmented inks are disclosed comprising an aqueous medium, a pigment, a dispersant, and a humectant. Inks are disclosed where the humectant is a sulfonated polyethylene oxide which provides long decap times and fast drying of the printed image. Inks are further disclosed where the dispersant is an alkyl(sulfophenoxy)benzenesulfonic acid or its salt. Such dispersants reduce the agglomeration of pigment particles and reduce or eliminate the deposition of foreign substances on heater elements during the jetting process. A variety of pigments, dispersants, humectants, and aqueous media can be used. Combinations of a sulfonated polyethylene oxide humectant and an alkyl(sulfophenoxy)benzenesulfonic acid (salt) dispersant provide inks with good stability, few kogation problems, long decap times and relatively fast drying times.

Title
Pigmented inks and humectants used therewith
Application Number
8/757897
Publication Number
5725647
Application Date
November 27, 1996
Publication Date
March 10, 1998
Inventor
Richard J Kuo
St. Paul
MN, US
James G Carlson
Lake Elmo
MN, US
Agent
John H Hornickel
Walter N Kirn
Gary L Griswold
Assignee
Minnesota Mining And Manufacturing Company
MN, US
IPC
C07D 11/00
View Original Source