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US 6,805,954 B2Granted
Tackified acrylic pressure sensitive adhesive
AssigneeNational Starch and Chemical Investment Holding Corporation
InventorsEric Silverberg, Peter A. Walter
Life of this patent
Estimating the term…
Abstract
Pressure sensitive adhesive formulations comprising an acrylic copolymer and a mixture of tackifiers exhibit outstanding adhesion to foam facestocks.
Claims14
A pressure-sensitive adhesive composition comprising an acrylic copolymer and at least two substantially different tackifiers wherein at least one tackifier is a terpene phenolic tackifier having a softening point of greater than about 60° C. and at least another tackifier is a rosin ester tackifiers having a softening point of less than about 40° C.
Dependencies are inferred from the claim text.