D - Textiles – Paper – 21 – H
Patent
D - Textiles, Paper
21
H
D21H 19/60 (2006.01)
Patent
CA 2749806
A method for making printing paper comprising preparing an ink receiving surface coating composition which comprises an optical brightening agent (OBA), polyvinyl alcohol (PVOH) and a water soluble divalent salt, wherein the PVOH and OBA are added to the coating prior to the salt, and applying said coating composition onto at least one surface of said paper; and a surface coating composition which comprises a protected OBA and a water soluble divalent salt.
L'invention porte sur un procédé de fabrication d'un papier d'impression qui comporte: la préparation d'une composition de revêtement de surface de réception d'encre comprenant un azureur optique (OBA), du poly(alcool vinylique) (PVOH) et un sel divalent soluble dans l'eau, le poly(alcool vinylique) et l'azureur optique étant ajoutés au revêtement avant le sel; et l'application de ladite composition de revêtement sur au moins une surface dudit papier. L'invention porte également sur une composition de revêtement de surface qui comporte un azureur optique protégé et un sel divalent soluble dans l'eau.
Akzo Nobel Chemicals International B.v.
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
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