Porous coating compositions for printing applications

Details Porous coating compositions for printing applications Porous coating compositions for printing applications

C - Chemistry, Metallurgy

09

D

C09D 1/00 (2006.01) B31F 5/00 (2006.01)

Patent

CA 2510062

Improved coating compositions for flexographic and other printing applications can comprise calcined clay, a binder and optionally one or more additional pigments. In some embodiments, the binder can comprise a natural composition and a synthetic composition. In addition, the coating composition can further comprise additives such as, for example, dispersants, defoamers, plastic pigments, rheology modifies, biocides, optical brighteners, cross-linkers, functional chemicals and combinations thereof. Due to the presence of the calcined clay, the improved coatings can have sufficient porosity to absorb water located in ink layers without employing significant amounts of expensive additives such as silicates and other porous compounds.

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