Morton International, Inc.

Msi Technology LLC.

Mark S Pucci

John Machonis, Jr

Mitsu Shida

Sumio Goto

Kevin Jachec

Paul D Whaley

Michael Lloyd Opacich

An extrudable adhesive composition is provided which is useful for bonding a layer of a polystyrene resin to a layer of a second resin. The extrudable adhesive composition comprises

Extrudable resin for polystyrene and laminate

Unique phase morphologies of incompatible thermoplastic polymers, including a higher melting temperature polymer and a lower melting temperature polymer that has been sufficiently chemically compatibilized to form a stable interface in a two-phase system, are achieved by pre-melting the higher melting temperature polymer, adding the compatibilized lower melting temperature polymer in solid form thereto, and thereafter melting the lower temperature polymer with mixing. In particular, in poly(ethylene vinyl alcohol)/modified polyolefin systems, compositions containing between about 35 and about 55 wt. percent EVOH are formed in which the poly(ethylene vinyl alcohol) exists as a continuous phase and the modified polyolefin exists as discrete domains dispersed therein. Such blended compositions have gas barrier properties comparable to homogeneous poly(ethylene vinyl alcohol).

Blends of immiscible polymers having novel phase morphologies

Composition comprising a mixture of from about 30% to about 99.9% of a polyolefin base resin; from about 0.1% to about 50% of a graft polymerized block copolymer having polystyrene end blocks and an aliphatic middle block; from 0 to about 40% by weight of an elastomer different from the above components; and from 0 to about 30% by weight of a nonelastomeric second polyolefin made from different monomers from those of the polyolefin base resin. The composition can be used as an adhesive film or tie layer, optinally by coextrusion between layers to be joined. Coatings and coated substrates are also disclosed.

Adhesive blend of polyolefins and grafted block copolymer of polystyrene

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Elk Grove Village, IL, United States of America

Mark S Pucci