Pressure-sensitive adhesives of polyvinyl methyl ether
AssigneeAmoco Corporation
InventorWen-Feng Liu
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Abstract
A water soluble pressure sensitive adhesive composition is disclosed wherein polyvinyl methyl ether is the major component and a styrenic block copolymer is the second component, the polyvinyl methyl ether and styrenic block copolymer present in a weight ratio of from about 95:5 to about 88:12, said styrenic block copolymer in said composition comprising less than about 14 percent by weight of the weight of the polyvinyl methyl ether. The pressure sensitive adhesive is useful for bonding polyethylene, polypropylene, ethylene-propylene copolymers, and paper.
Claims10
A water-removable pressure sensitive adhesive composition containing polyvinyl methyl ether and a styrenic block copolymer wherein polyvinyl methyl ether comprises the major component of said pressure sensitive adhesive composition and present as water-soluble first component and a water-dispersible styrenic block copolymer is a second component, the polyvinyl methyl ether and the styrenic block copolymer present in said pressure sensitive adhesive composition in a weight ratio of from about 95:5 to about 88:12, parts by weight.
Dependencies are inferred from the claim text.