Highly viscous coating material for porous substrates

Details Highly viscous coating material for porous substrates Highly viscous coating material for porous substrates

2006-05-02

2006-05-02

Shosho, Callie (Department: 1714)

Synthetic resins or natural rubbers -- part of the class 520 ser

Synthetic resins

At least one aryl ring which is part of a fused or bridged...

C524S612000

Reexamination Certificate

active

07037973

ABSTRACT:
A coating composition for application on a porous substrate for use with a roller printing application. The coating composition comprises an ethoxylated polyethyleneimine polymer, a pH modifier, a thickening additive, an ammonium sulfate, a surfactant, and water. Optional additives can comprise a biocide, a lower aliphatic alcohol and a UV fluorescent dye. When the coating composition is applied to the porous substrate, waterfast prints are produced which are resistant to smudging or bleeding when subjected to moisture. The coating composition can be applied to the porous substrate as a pre-print coating or a post-print coating.

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