Patents

Henkel patents UV curing anti-fingerprinting coating

July 12, 2011

Patent No. U.S. 7,816,434 B2
Henkel has obtained a patent for a coating material comprised of 40%-90% weight of at least one oligomeric substance selected from the group consisting of epoxy (meth)acrylates, polyester (meth)acrylates, polyether (meth)acrylates, and polyurethane (meth)acrylates, wherein the oligomeric substance is linear or branched and contains at least two unsaturated double bonds; 5%-60% weight of at least one low molecular weight (meth)acrylate selected from the group consisting of monofunctional, difunctional, trifunctional and polyfunctional (meth)acrylate compounds; 0.1%-20% weight of at least one (meth)acrylate compound different from the first two containing one or more acidic groups; and 0.1%-20% weight of at least one auxiliary substance selected from the group consisting of adhesion promoters different from flow-control agents, defoaming agents, light stabilizers, dyes, pigments, biocides, fillers and photoinitiators; wherein 2%-9.7% weight, based upon total coating material, of the at least one low molecular weight (meth)acrylate is selected from difunctional, trifunctional and polyfunctional (meth)acrylate compounds; and at least one of nanoparticulate aluminum oxide or hydrophobic silica is present in highly dispersed form in the coating material and the components are selected such that the coating material has a viscosity of less than 1000 mPas within a temperature range of 0°C to 90°C.

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