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This article discloses the use of sodium methyl silonate monomer in ink jet or aqueous pen inks. The silonate provides faster drying of print followed by improved water resistance of the print.
English (United States)
This text was extracted from a PDF file.
This is the abbreviated version, containing approximately
60% of the total text.
Page 1 of 1
Silonate Monomer for Inks
This article discloses the use of sodium methyl silonate monomer in ink jet or
aqueous pen inks. The silonate provides faster drying of print followed by
improved water resistance of the print.
Water-soluble resins in the printing industry are used to alter the properties of
the aqueous system and to effect the manner in which coatings are deposited
from aqueous solutions. Waterborne systems typically incorporate water-soluble
resins for viscosity control, pigment dispersion, gloss, and adhesion of the ink
application. The silonate monomer functions as a penetrant for paper, and upon
standing, changes to a water-insoluble polymer to promote water repellancy,
thereby improving smear- and wet-resistance of the water-soluble dye used as
colorant in jet inks. The mechanism of penetrants in ink jet printing lowers the
interfacial tension of the paper finish and ink. The silonate monomer serves as a
penetrant for jet inks, much as a surfactant. Polymerization of the resin
monomer in the resultant print, upon standing, then occurs. The mechanism is:
The cyclic silonate monomer polymerizes to the insoluble polymer upon
water loss from the printed ink. Smear-resistance improves within one hour after
printing (depending on drying conditions), while water-soak-resistance develops
more dramatically within twenty-four hours. The physical character of the ink
thereby changes by the evolution of the polymerization process, the effect bein...