US4416944A
Expired / Lapsed
US
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Composite structures
Assignee: Enron Chemical Co
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Filing: 1982-12-23
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Granted: 1983-11-22
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Expires: 2002-12-23
Abstract
Abstract Compositions of matter having properties that make them strong adhesives to various substrates and especially for adhering polypropylene and polyethylene to various polar substrates. These compositions comprise blends of a graft copolymer of a polyethylene backbone grafted with at least one grafting monomer comprising one or more of polymerizable ethylenically unsaturated carboxylic acids or the anhydrides of such acids blended with a blending resin that is a mixture of one or more high density polyethylenes, one or more linear low density polyethylenes and one or more polypropylenes. The disclosure also includes composite structures comprising one or more substrates and a blend of the above as the adhesive in contact with the substrate or substrates and the method of preparing these composite structures.
Inventors
- 👤 Ashok M. Adur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 15:19
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; B; B32; B32B; B32B27/00; B32B27/04; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; Y; Y10; Y10T; Y10T428/00; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/2826; Y10T428/2852; Y10T428/2878; Y10T428/2891; Y10T428/31504; Y10T428/31551; Y10T428/31645; Y10T428/31678; Y10T428/31692; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31855; Y10T428/3188; Y10T428/31895; Y10T428/31909; Y10T428/31928; Y10T428/31935; Y10T428/31938
Claims Analysis
Total Claims: 39
Claim 1
Independent Claim
64 words
A composite structure comprising: (A) a substrate, and adhered thereto (B) a modified polyolefin blend consisting essentially of: (i) HDPE having a density of about 0.94-0.97 g/cc; (ii) at least one polypropylene polymer or copolymer; (iii) LDPE having a density of about 0.91-0.94 g/cc; and (iv) a polyethylene polymer grafted with at least one grafting monomer polymerizable ethylenically unsaturated carboxylic acid or acid derivative.
Claim 2
Dependent Claim
64 words
A composite structure comprising: (A) a substrate, and adhered thereto (B) a modified polyolefin blend consisting essentially of: (i) HDPE having a density of about 0.94-0.97 g/cc; (ii) at least one polypropylene polymer or copolymer; (iii) LDPE having a density of about 0.91-0.94 g/cc; and (iv) a polyethylene polymer grafted with at least one grafting monomer polymerizable ethylenically unsaturated carboxylic acid or acid derivative.
Claim 3
Dependent Claim
19 words
The composite structure of claim 1 wherein said substrate comprises polar polymers, solid metals, glass, paper, wood or cellophane.
Claim 4
Dependent Claim
11 words
The composite structure of claim 1 wherein said substrate comprises nylon.
Claim 5
Dependent Claim
11 words
The composite structure of claim 1 wherein said substrate comprises ionomer.
Claim 6
Dependent Claim
11 words
The composite structure of claim 1 wherein said substrate comprises aluminum.
Claim 7
Dependent Claim
11 words
The composite structure of claim 1 wherein said substrate comprises polyolefin.
Claim 8
Dependent Claim
26 words
The composite structure of claim 1 wherein said propylene polymer or copolymer comprises propylene homopolymers and copolymers of propylene and one or more unsaturated aliphatic hydrocarbons.
Claim 9
Dependent Claim
17 words
The composite structure of claim 1 wherein said polypropylene polymer comprises a copolymer of propylene and ethylene.
Claim 10
Dependent Claim
67 words
The composite structure of claim 1 wherein said grafting monomer comprises at least one of acrylic acid, methacrylic acid, fumaric 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-dicarboyxlic 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 11
Dependent Claim
54 words
The composite structure of claim 1 wherein said unsaturated or saturated carboxylic acids or acid derivatives of (iv) comprise the acids, metal salts of said acids, acid esters, acid anhydrides, acid amines, acid halides and acid derivatives or aliphatic alicyclic, aromatic fused ring, heterocyclic moieties and copolymers containing one or more of these groups.
Claim 12
Dependent Claim
44 words
The composite structure of claim 1 wherein the polyethylene of (iv) comprises ethylene homopolymers and copolymers of ethylene with one or more of butene, hexene, octene, 4-methyl pentene-1 or other unsaturated aliphatic or aromatic hydrocarbons in the density range of 0.91 to 0.97 g/cc.
Claim 13
Dependent Claim
14 words
The composite structure of claim 11 wherein the polyolefin of (iv) comprises linear polyethylenes.
Claim 14
Dependent Claim
26 words
The composite structure of claim 1 wherein said HDPE of (i) comprises an ethylene homopolymer and copolymers of ethylene with olefin monomers containing 3-15 carbon atoms.
Claim 15
Dependent Claim
25 words
The composite structure of claim 13 wherein said HDPE has a density of about 0.94-0.97 g/cc and a melt index of about 0.01-50 g/10 min.
Claim 16
Dependent Claim
26 words
The composite structure of claim 1 wherein the propylene polymer of (ii) comprises propylene homopolymers, copolymers or terpolymers containing less than 40% of a polymerizable comonomer.
Claim 17
Dependent Claim
40 words
The composite structure of claim 1 wherein said LDPE of (iii) comprises high pressure low density polyethylene or low pressure linear low density polyethylene, each having a density of about 0.91-0.94 g/cc and a melt index of 1.0-50 g/10 min.
Claim 18
Dependent Claim
13 words
The composite structure of claim 1 wherein said substrate comprises ethylene-vinyl alcohol copolymer.
Claim 19
Dependent Claim
73 words
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: (i) HDPE having a density of about 0.94-0.97 g/cc; (ii) at least one polypropylene polymer or copolymer; (iii) LDPE having a density of about 0.91-0.94 g/cc; and (iv) a polyethylene polymer grafted with at least one grafting monomer polymerizable ethylenically unsaturated carboxylic acid or acid derivative.
Claim 20
Dependent Claim
73 words
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: (i) HDPE having a density of about 0.94-0.97 g/cc; (ii) at least one polypropylene polymer or copolymer; (iii) LDPE having a density of about 0.91-0.94 g/cc; and (iv) a polyethylene polymer grafted with at least one grafting monomer polymerizable ethylenically unsaturated carboxylic acid or acid derivative.
Claim 21
Dependent Claim
15 words
The composite structure of claim 18 wherein said (A) comprises polypropylene and a polar substrate.
Claim 22
Dependent Claim
15 words
The composite structure of claim 18 wherein said (A) comprises polyethylene and a polar substrate.
Claim 23
Dependent Claim
13 words
The composite structure of claim 18 wherein said (A) comprises polypropylene and nylon.
Claim 24
Dependent Claim
13 words
The composite structure of claim 18 wherein said (A) comprises polyethylene and nylon.
Claim 25
Dependent Claim
15 words
The composite structure of claim 18 wherein said (A) comprises polypropylene and ethylene-vinyl alcohol copolymer.
Claim 26
Dependent Claim
14 words
The composite structure of claim 18 wherein said (A) comprises polyethylene and ethylene-vinyl alcohol.
Claim 27
Dependent Claim
13 words
The composite structure of claim 18 wherein said (A) comprises polypropylene and aluminum.
Claim 28
Dependent Claim
13 words
The composite structure of claim 18 wherein said (A) comprises polyethylene and aluminum.
Claim 29
Dependent Claim
12 words
The composite structure of claim 18 wherein said (A) comprises polar substrates.
Claim 30
Dependent Claim
26 words
The composite structure of claim 18 wherein said propylene polymer or copolymer comprises propylene homopolymers and copolymers of propylene and one or more unsaturated aliphatic hydrocarbons.
Claim 31
Dependent Claim
17 words
The composite structure of claim 18 wherein said polypropylene polymer comprises a copolymer of propylene and ethylene.
Claim 32
Dependent Claim
67 words
The composite structure of claim 18 wherein said grafting monomer comprises at least one of acrylic acid, methacrylic acid, fumaric 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(2.2.2)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 33
Dependent Claim
54 words
The composite structure of claim 18 wherein said unsaturated or saturated carboxylic acids or acid derivatives of (iv) comprise the acids, metal salts of said acids, acid esters, acid anhydrides, acid amines, acid halides and acid derivatives or aliphatic alicyclic, aromatic fused ring, heterocyclic moieties and copolymers containing one or more of these groups.
Claim 34
Dependent Claim
43 words
The composite structure of claim 18 wherein the polyethylene of (iv) comprises ethylene homopolymers and copolymers of ethylene with one or more of butene, hexene, octene, 4-methyl pentene-1 or other unsaturated aliphatic or aromatic hydrocarbons in the density range 0.91 to 0.97 g/cc.
Claim 35
Dependent Claim
14 words
The composite structure of claim 32 wherein the polyethylene of (iv) comprises linear polyethylenes.
Claim 36
Dependent Claim
26 words
The composite structure of claim 18 wherein said HDPE of (i) comprises an ethylene homopolymer and copolymers of ethylene with olefin monomers containing 3-15 carbon atoms.
Claim 37
Dependent Claim
25 words
The composite structure of claim 34 wherein said HDPE has a density of about 0.94-0.97 g/cc and a melt index of about 0.01-50 g/10 min.
Claim 38
Dependent Claim
26 words
The composite structure of claim 18 wherein the propylene polymer of (ii) comprises propylene homopolymers, copolymers or terpolymers containing less than 40% of a polymerizable comonomer.
Claim 39
Dependent Claim
40 words
The composite structure of claim 18 wherein said LDPE of (iii) comprises high pressure low density polyethylene or low pressure linear low density polyethylene, each having a density of about 0.91-0.94 g/cc and a melt index of 1.0-50 g/10 min.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |