Nitto Denko Patents Pressure-Sensitive Adhesive

January 14, 2014

U.S. 8,541,501 B2
Nitto Denko Corporation has been granted a patent for a water-dispersed pressure-sensitive adhesive composition comprised of a (meth)acrylic polymer, a latex containing a rubber component, and a tackifier: the (meth)acrylic polymer is obtained by polymerizing a monomer composition comprised of as a primary component an alkyl (meth)acrylate having an alkyl group with 1 to 18 carbon atoms; the rubber component is immiscible with the (meth)acrylic polymer and has a loss tangent peak temperature of −5° C or below when determined by a dynamic viscoelastic measurement in which shear strain is applied at a frequency of 1 Hz; and the tackifier is miscible with the rubber component, but immiscible with the (meth)acrylic polymer.

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