Claims
- 1. A multilayer composite structure having at least two structural layers, wherein at least two of the at least two layers are adhered together with an adhesive layer having a composition comprising:a) an ethylene copolymer comprising ethylene and an ethylenically unsaturated polar monomer having a polar moiety of the formula O—(CO)C1-C6 alkyl or —(CO)—OC1-C6 alkyl; b) from 2 to 35 weight percent, based on the total weight of a) plus b) plus c), if c) is present, of a grafted metallocene polyethylene, and c) optionally up to 30 weight percent of a hydrocarbon elastomer, the acid grafting agent being an unsaturated carboxylic acid or its derivative, and the level of grafting being such that the total amount of grafting agent in the total composition a) plus b) plus c) is from 0.01 to 3 weight percent.
- 2. The multilayer structure of claim 1 wherein:component a) is selected from an ethylene vinyl acetate copolymer or is selected from an ethylene alkyl acrylate or methacrylate ester; and component b) is selected from 2 to 35 weight percent, based on the total weight of a) plus b) plus c), of a grafted metallocene polyethylene, the metallocene polyethylene selected from the group consisting of (i) those having a melt flow ratio of less than 6.53 and an Mw/Mn ratio of greater than the melt flow ratio less 4.63, and (ii) those having a melt flow ratio of equal or greater than 5.63 and an Mw/Mn ratio of equal or less than the melt flow ratio less 4.63.
- 3. The multilayer structure of claim 1, wherein at least one layer is a barrier layer to oxygen, water, or both.
- 4. The multilayer structure of claim 3 which is a multilayer film, and wherein the structural and adhesive layers are co-extruded.
- 5. The multilayer structure of claim 1 wherein at least one of the structural layers is selected from a polyethylene or a polyamide.
Parent Case Info
This application is a Division of Ser. No. 09/234,735 filed Jan. 21, 1999, now U.S. Pat. No. 6,166,142, which claims the benefit of U.S. Provisional Application Ser. No. 60/072,734, filed Jan. 27, 1998.
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