Abstract: The teachings herein are directed at multi-layer films, tie layer compositions for multi-layer films and related methods, and to polymeric adhesive compositions and methods for manufacturing polymeric adhesive compositions. The tie layer composition preferably adhere to polypropylene, and more preferably adheres to both polyethylene and polypropylene. The tie layer preferably includes a propylene based elastomer. The tie layer includes one or more thermoplastic polyolefins. The tie layer composition may include a grafted polyolefin, e.g., having one or more functional grafts. The polymeric adhesive compositions preferably adhere to both polypropylene surfaces and to polyethylene surfaces. The polymeric adhesive composition preferably comprises a minority amount (i.e., less than about 40 weight percent) of a propylene based elastomer polymer and a majority amount (i.e., greater than about 55 weight percent) of an ethylene containing polymer.

Abstract: The teachings herein are directed at multi-layer films, tie layer compositions for multi-layer films and related methods, and to polymeric adhesive compositions and methods for manufacturing polymeric adhesive compositions. The tie layer composition preferably adhere to polypropylene, and more preferably adheres to both polyethylene and polypropylene. The tie layer preferably includes a propylene based elastomer. The tie layer includes one or more thermoplastic polyolefins. The tie layer composition may include a grafted polyolefin, e.g., having one or more functional grafts. The polymeric adhesive compositions preferably adhere to both polypropylene surfaces and to polyethylene surfaces. The polymeric adhesive composition preferably comprises a minority amount (i.e., less than about 40 weight percent) of a propylene based elastomer polymer and a majority amount (i.e., greater than about 55 weight percent) of an ethylene containing polymer.

Abstract: The present invention provides a resin composition that is added when a multi-layer structure containing hydrolyzed ethylene-vinyl acetate copolymer is reground into a multi-layer structure and a process for preparing a multi-layer structure using the resin composition. Specifically, the present invention relates to a resin composition comprising (A) polyolefin, (B) metal salt of higher fatty acid having 12 to 30 carbon atoms and (C) zeolite. Also, the multi-layer structure is prepared by the process of regrinding by adding the resin composition to a multi-layer structure containing hydrolyzed ethylene-vinyl acetate copolymer.

Abstract: Improved packaging films which can be heat sealed and then easily opened when desired are provided. The heat sealable packaging films are prepared from ionomers, acid copolymers, or mixtures thereof which are modified with polypropylene, ethylene vinyl acetate copolymer, and, optionally, polyethylene. The resulting films are heat sealable with a relatively low heat seal initiation temperature and with consistent seal strengths over a relatively broad heat sealing temperature range. The heat seal strength, which is retained over time, can be varied or adjusted to desired values by adjusting the composition of the modified ionomer blend. The seal can be opened in a clean manner (i.e., not stringy). Since the seal whitens upon opening, the film of this invention allows for tamper evident packaging.

Abstract: 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 comprisesA) an ethylene polymer fraction at between about 35 and about 65 wt percent relative to the total of A) plus B), the ethylene polymer fraction comprising an ethylene polymer, copolymer or mixture of ethylene polymers and copolymers, each ethylene polymer or copolymer being formed from at least about 60 weight percent ethylene monomers, balance other copolymerizable monomers, and the ethylene polymer fraction A) being formed, in total, of at least about 65 weight percent ethylene monomers, balance, other copolymerizable monomers, andB) between about 35 and about 65 wt %, relative to total of A) plus B), of a styrene/aliphatic/styrene triblock elastomer, between about 20 and about 60 wt % of said triblock elastomer comprising styrene monomers.The MI.sub.2(SB).sup.2 /MI.sub.2(PE) is about 1.0 or above.

Abstract: 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).

Abstract: 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.