Composite structures

Claim 2

A composite structure comprising: (A) a substrate, and adhered thereto (B) a modified polyolefin blend consisting essentially of about 0.1-40 parts by weight in said blend of a non-elastomeric graft copolymer of about 70-99.999 wt. % of a non-polar ethylene homopolymer or copolymer backbone having a density of at least about 0.915 grafted with about 30-0.001 wt. % of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid anhydride for a total of 100% and about 99.9-60 parts by weight of a substantially elastomer free blending resin mixture of about 25-75 wt. % of a linear low density polyethylene of a density of about 0.915 to less than 0.94, having a substantial absence of long-chain branching and a high degree of short-chain branching, and about 75-25 wt. % of a non-elastomeric polypropylene for a total of 100%.

Claim 3

The composite structure of claim 1 wherein said substrate comprises polar polymers, polypropylene, solid metals, glass, paper, wood or cellophane.

Claim 4

The composite structure of claim 1 wherein said substrate comprises nylon.

Claim 5

The composite structure of claim 1 wherein said substrate comprises aluminum.

Claim 6

The composite structure of claim 1 wherein said substrate comprises ethylene-vinyl alcohol copolymer.

Claim 7

The composite structure of claim 1 wherein said polypropylene of the blending resin comprises a copolymer of propylene and ethylene.

Claim 8

The composite structure of claim 1 wherein said substrate comprises propylene homopolymers and copolymers of propylene and one or more unsaturated aliphatic hydrocarbons.

Claim 9

The composite structure of claim 7 wherein said hydrocarbon comprises ethylene.

Claim 10

The composite structure of claim 1 wherein said polypropylene of the blending resin comprises propylene homopolymers and copolymers of propylene and one or more unsaturated aliphatic hydrocarbons.

Claim 11

The composite structure of claim 1 wherein said linear low density polyethylene has a narrow molecular weight distribution.

Claim 12

The composite structure of claim 1 wherein said polyethylene of the blending resin comprises copolymers of ethylene and an unsaturated hydrocarbon.

Claim 13

The composite structure of claim 11 wherein said hydrocarbon comprises propylene, butene-1, hexene-1 or octene-1.

Claim 14

The composite structure of claim 1 wherein said grafting monomer comprises at least one of acrylic acid, methacrylic acid, maleic acid, itaconic acid, citraconic acid, mesaconic acid, maleic anhydride, 4-methyl cyclohex-4-ene-1,2-dicarboxylic acid anhydride, bicyclo(2.2.2)oct-5-ene-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,8,9,10-octahydronaphthalene-2,3-dicarboxylic acid anhydride, 2-oxa-1,3-diketospiro(4.4)non-7-ene, bicyclo(2.2.1)hept-5-ene-2, 3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, norborn-5-ene-2, 3-dicarboxylic acid anhydride, Nadic anhydride, methyl Nadic anhydride, Himic anhydride, methyl Himic anhydride, and x-methyl bicyclo(2.2.1)-hept-5-ene-2, 3-dicarboxylic acid anhydride.

Claim 15

The method of making the composite structure of claim 1 wherein said components are adhered together by methods including blown film coextrusion, cast film coextrusion, blow molding coextrusion, lamination, coextrusion coating, powder coating, rotomolding, profile coextrusion or wire coating extrusion or coextrusion.

Claim 16

A composite structure comprising: (A) two or more substrates with adjacent pairs adhered together by (B) an intervening layer of a modified polyolefin blend consisting essentially of about 0.1-40 parts by weight in said blend of a non-elastomeric graft copolymer of about 70-99.999 wt. % of a non-polar ethylene homopolymer or copolymer backbone having a density of at least about 0.915 grafted with about 30-0.001 wt. % of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid anhydride for a total of 100% and about 99.9-60 parts by weight of a substantially elastomer-free blending resin mixture of about 25-75 wt. % of a linear low density polyethylene of a density of about 0.915 to less than 0.94, having a substantial absence of long-chain branching and a high degree of short-chain branching, and about 75-25 wt. % of a non-elastomeric polypropylene for a total of 100%.

Claim 17

A composite structure comprising: (A) two or more substrates with adjacent pairs adhered together by (B) an intervening layer of a modified polyolefin blend consisting essentially of about 0.1-40 parts by weight in said blend of a non-elastomeric graft copolymer of about 70-99.999 wt. % of a non-polar ethylene homopolymer or copolymer backbone having a density of at least about 0.915 grafted with about 30-0.001 wt. % of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid anhydride for a total of 100% and about 99.9-60 parts by weight of a substantially elastomer-free blending resin mixture of about 25-75 wt. % of a linear low density polyethylene of a density of about 0.915 to less than 0.94, having a substantial absence of long-chain branching and a high degree of short-chain branching, and about 75-25 wt. % of a non-elastomeric polypropylene for a total of 100%.

Claim 18

The composite structure of claim 15 wherein said (A) comprises polypropylene and a polar substrate.

Claim 19

The composite structure of claim 15 wherein said (A) comprises polypropylene and nylon.

Claim 20

The composite structure of claim 15 wherein said (A) comprises polypropylene and ethylene-vinyl alcohol copolymer.

Claim 21

The composite structure of claim 25 wherein said (A) comprises polypropylene and aluminum.

Claim 22

The composite structure of claim 15 wherein said (A) comprises polar substrates.

Claim 23

The composite structure of claim 15 wherein said polypropylene of the blending resin comprises propylene homopolymers and copolymers of propylene and one or more unsaturated aliphatic hydrocarbons.

Claim 24

The composite structure of claim 21 wherein said hydrocarbon comprises ethylene.

Claim 25

The composite structure of claim 15 wherein said polypropylene of the blending resin comprises a copolymer of propylene and ethylene.

Claim 26

The composite structure of claim 15 wherein said linear low density polyethylene has a narrow molecular weight distribution.

Claim 27

The composite structure of claim 15 wherein said polyethylene of the blending resin comprises copolymers of ethylene and an unsaturated hydrocarbon.

Claim 28

The composite structure of claim 25 wherein said hydrocarbon comprises propylene, butene-1, hexene-1 or octene-1.

Claim 29

The composite structure of claim 15 wherein said grafting monomer comprises at least one of acrylic acid, methacrylic acid, maleic acid, itaconic acid, citraconic acid, mesaconic acid, maleic anhydride, 4-methyl cyclohex-4-ene-1,2-dicarboxylic acid anhydride, bicyclo(2.2.2)oct-5-ene-2,3-dicarboxylic acid anhydride, 1,2,3,4,5,8,9,10-octahydronaphthalene-2,3-dicarboxylic acid anhydride, 2-oxa-1,3-diketospiro(4.4)non-7-ene, bicyclo(2.2.1)hept-5-ene-2,3-dicarboxylic acid anhydride, maleopimaric acid, tetrahydrophthalic anhydride, norborn-5-ene-2,3-dicarboxylic acid anhydride, Nadic anhydride, methyl Nadic anhydride, Himic anhydride, methyl Himic anhydride, and x-methyl bicyclo(2.2.1)hept-5-ene-2,3-dicarboxylic acid anhydride.

Claim 30

The method of making the composite structure of claim 15 wherein said components are adhered together by methods including blown film coextrusion, cast film coextrusion, blow molding coextrusion, lamination, coextrusion coating, powder coating, rotomolding, profile coextrusion or wire coating extrusion or coextrusion.