Acid stable aqueous dispersion of metal particles and applications
AssigneeAgfa-Gevaert
InventorsHieronymus Andriessen, Frank Louwet
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Abstract
Aqueous coating compositions containing acid stable metal dispersions, prepared by chemical reduction in aqueous medium, are obtained by using a N-quaternized cellulose derivative as binder. They can be used for the preparation of heat mode recording layers, magnetic layers and conductive layers.
Claims14
A sheet or web material comprising a support and a metal layer coated from an aqueous composition comprising a dispersion of metal or metal alloy particles, prepared by chemical reduction of metal ions in aqueous medium, wherein (1) said dispersion has a concentration of at least 20 g of particles per liter, (2) said particles show an average size between 5 and 200 nm, and (3) said aqueous composition further includes a N-quaternized cellulose as binder.
Dependencies are inferred from the claim text.