Compositions: coating or plastic – Coating or plastic compositions – Marking
Patent
1996-11-27
1998-03-10
Bell, Mark L.
Compositions: coating or plastic
Coating or plastic compositions
Marking
107491, 106 316, 106 3185, 106 3187, 106 3189, 106 319, 347100, C09D 1100
Patent
active
057256470
ABSTRACT:
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.
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Carlson James G.
Kuo Richard J.
Bell Mark L.
Griswold Gary L.
Hertzog Scott L.
Hornickel John H.
Kirn Walter N.
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