Patent US4460632A successfully refreshed from Google Patents.
US4460632A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive blends and composite structures
Assignee: Enron Chemical Co
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Filing: 1983-06-17
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Granted: 1984-07-17
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Expires: 2003-06-17
Abstract
Abstract Composites of matter having properties that make them strong adhesives to various substrates, especially to polar substrates. These adhesive blends comprise medium density polyethylene, linear low density polyethylene and a high density polyethylene grafted with or containing in its main chain unsaturated or saturated carboxylic acids or derivatives. The disclosure also includes composite structures having one or more substrates with the adhesive blend adhered thereto and to methods of making these composites.
Inventors
- 👤 Ashok M. Adur
- 👤 Seymour Schmukler
- 👤 John Machonis, Jr.
- 👤 Mitsuzo Shida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 09:30
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/04; B; B32; B32B; B32B27/00; B32B27/32; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24; Y; Y10; Y10T; Y10T428/00; Y10T428/13; Y10T428/1303; Y10T428/1307; Y10T428/131; Y10T428/1317; Y10T428/1321; Y10T428/1334; Y10T428/1348; Y10T428/1352; Y10T428/1355; Y10T428/28; Y10T428/2813; Y10T428/2817; Y10T428/31504; Y10T428/31725; Y10T428/31739; Y10T428/31743; Y10T428/31746; Y10T428/31855
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
81 words
A composite structure comprising: (A) a substrate, and adhered thereto (B) an adhesive blend consisting essentially of: (i) medium density polyethylene comprising a branched ethylene homopolymer having a density of about 0.93-0.94 g/cc; (ii) linear low density polyethylene comprising a copolymer of ethylene and an unsaturated aliphatic hydrocarbon having a density of about 0.91-0.94 g/cc; and (iii) a HDPE polymer comprising a linear homopolymer or copolymer of ethylene having a density of about 0.94-0.97 g/cc grafted with carboxylic acids or derivatives.
Claim 2
Dependent Claim
81 words
A composite structure comprising: (A) a substrate, and adhered thereto (B) an adhesive blend consisting essentially of: (i) medium density polyethylene comprising a branched ethylene homopolymer having a density of about 0.93-0.94 g/cc; (ii) linear low density polyethylene comprising a copolymer of ethylene and an unsaturated aliphatic hydrocarbon having a density of about 0.91-0.94 g/cc; and (iii) a HDPE polymer comprising a linear homopolymer or copolymer of ethylene having a density of about 0.94-0.97 g/cc grafted with carboxylic acids or derivatives.
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 ionomers.
Claim 5
Dependent Claim
11 words
The composite structure of claim 1 wherein said substrate comprises nylon.
Claim 6
Dependent Claim
13 words
The composite structure of claim 1 wherein said substrate comprises steel or copper.
Claim 7
Dependent Claim
11 words
The composite structure of claim 1 wherein said substrate comprises aluminum.
Claim 8
Dependent Claim
14 words
The composite structure of claim 1 wherein said substrate comprises polyethylene or ethylene copolymers.
Claim 9
Dependent Claim
30 words
The composite structure of claim 1 wherein said linear low density polyethylene of (ii) comprises copolymers of ethylene with one or more of propylene, butene, hexene, 4-methyl pentene-1 or octene-1.
Claim 10
Dependent Claim
22 words
The composite structure of claim 1 wherein said linear low density polyethylene copolymer has a melt index of about 0.5-5 g/10 min.
Claim 11
Dependent Claim
27 words
The composite structure of claim 1 wherein said carboxylic acids or acid derivatives of (iii) comprise carboxylic acids, acid anhydrides, esters, amides and other carboxylic acid derivatives.
Claim 12
Dependent Claim
13 words
The composite structure of claim 1 wherein said substrate comprises ethylene-vinyl alcohol copolymer.
Claim 13
Dependent Claim
89 words
A composite structure comprising: (A) two or more substrates with adjacent pairs adhered together by (B) an intervening layer of adhesive blend consisting essentially of: (i) medium density polyethylene comprising a branched ethylene homopolymer having a density of about 0.93-0.94 g/cc; (ii) linear low density polyethylene comprising a copolymer of ethylene and an unsaturated aliphatic hydrocarbon having a density of about 0.91-0.94 g/cc; and (iii) a HDPE polymer comprising a linear homopolymer or copolymer of ethylene having a density of about 0.94-0.97 g/cc grafted with carboxylic acids or derivatives.
Claim 14
Dependent Claim
89 words
A composite structure comprising: (A) two or more substrates with adjacent pairs adhered together by (B) an intervening layer of adhesive blend consisting essentially of: (i) medium density polyethylene comprising a branched ethylene homopolymer having a density of about 0.93-0.94 g/cc; (ii) linear low density polyethylene comprising a copolymer of ethylene and an unsaturated aliphatic hydrocarbon having a density of about 0.91-0.94 g/cc; and (iii) a HDPE polymer comprising a linear homopolymer or copolymer of ethylene having a density of about 0.94-0.97 g/cc grafted with carboxylic acids or derivatives.
Claim 15
Dependent Claim
15 words
The composite structure of claim 12 wherein said (A) comprises polyethylene and a polar substrate.
Claim 16
Dependent Claim
13 words
The composite structure of claim 12 wherein said (A) comprises polyethylene and nylon.
Claim 17
Dependent Claim
15 words
The composite structure of claim 12 wherein said (A) comprises polyethylene and ethylene-vinyl alcohol copolymer.
Claim 18
Dependent Claim
13 words
The composite structure of claim 12 wherein said (A) comprises polyethylene and aluminum.
Claim 19
Dependent Claim
13 words
The composite structure of claim 12 wherein said (A) comprises polyethylene and metals.
Claim 20
Dependent Claim
12 words
The composite structure of claim 12 wherein said (A) comprises polar substrates.
Claim 21
Dependent Claim
14 words
The composite structure of claim 12 wherein said (A) comprises metals and polar substrates.
Claim 22
Dependent Claim
30 words
The composite structure of claim 12 wherein said linear low density polyethylene of (ii) comprises copolymers of ethylene with one or more of propylene, butene, hexene, 4-methyl pentene-1 or octene-1.
Claim 23
Dependent Claim
22 words
The composite structure of claim 12 wherein said linear low density polyethylene copolymer has a melt index of about 0.5-5 g/10 min.
Claim 24
Dependent Claim
27 words
The composite structure of claim 12 wherein said carboxylic acids or acid derivatives of (iii) comprise carboxylic acids, acid anhydrides, esters, amides and other carboxylic acid derivatives.
Claim 25
Dependent Claim
23 words
The composite structure of claim 12 wherein said substrate comprises ethylene homopolymers and copolymers of ethylene and one or more unsaturated aliphatic hydrocarbons.
Claim 26
Dependent Claim
40 words
The composite structure of claim 12 wherein said components are adhered together by methods including blown film coextrusion, cast film coextrusion, blow molding coextrusion, lamination, extrusion or coextrusion coating, powder coating, rotomolding, profile coextrusion or wire coating extrusion or coextrusion.
Claim 27
Dependent Claim
40 words
The composite structure of claim 1 wherein said components are adhered together by methods including blown film coextrusion, cast film coextrusion, blown molding coextrusion, lamination, extrusion or coextrusion coating, powder coating, rotomolding, profile coextrusion or wire coating extrusion or coextrusion.
Claim 28
Dependent Claim
15 words
The composite structure of claim 1 formed as a packaging film or a coextruded sheet.
Claim 29
Dependent Claim
17 words
The composite structure of claim 1 wherein said structure is a container thermoformed from a coextruded sheet.
Claim 30
Dependent Claim
14 words
The composite structure of claim 1 adapted as a coating on a glass bottle.
Claim 31
Dependent Claim
11 words
The composite structure of claim 1 adapted as a boil-in-bag container.
Claim 32
Dependent Claim
15 words
The composite structure of claim 12 formed as a packaging film or a coextruded sheet.
Claim 33
Dependent Claim
17 words
The composite structure of claim 12 wherein said structure is a container thermoformed from a coextruded sheet.
Claim 34
Dependent Claim
14 words
The composite structure of claim 12 adapted as a coating on a glass bottle.
Claim 35
Dependent Claim
11 words
The composite structure of claim 12 adapted as a boil-in-bag container.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1987-07-17 | 1988-01-16 | 1988-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-07-17 | 1992-01-16 | 1992-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-07-17 | 1996-01-16 | 1996-07-17 | $7700.00 | Window Closed / Lapsed |