Patent US4487885A successfully refreshed from Google Patents.
US4487885A
Expired / Lapsed
US
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Adhesive blends
Assignee: Enron Chemical Co
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Filing: 1983-07-01
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Granted: 1984-12-11
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Expires: 2003-07-01
Abstract
Abstract Resin blends that are strong adhesives to various substrates and especially to polar substrates. These blends comprise (a) a graft copolymer of a polyethylene backbone grafted with at least one grafting monomer comprising one or more polymerizable ethylenically unsaturated carboxylic acids or acid derivatives such as acid anhydrides, acid esters, salts, amides, imides and the like, (b) a LDPE, a linear low density polyethylene, or an ethylene-unsaturated ester copolymer and (c) a poly (α-olefin).
Inventors
- 👤 Ashok M. Adur
- 👤 Seymour Schmukler
- 👤 John Machonis, Jr.
- 👤 Mitsuzo Shida
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 08:14
CPC Classifications
C; C09; C09J; C09J123/00; C09J123/02; C09J123/18; B; B32; B32B; B32B27/00; B32B27/04; C09J123/04; C09J151/00; C09J151/06; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
142 words
An adhesive blend particularly for adhering to a wide variety of polar substrates and consisting essentially of: (a) about 0.1 to less than about 40 parts by weight in said blend of a graft copolymer of about 70-99.95 wt.% of a polyethylene backbone grafted with about 30-0.05 wt.% of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid derivative for a total of 100%, and (b) about 0.1-99 parts by weight in said blend of LDPE, or ethylene-unsaturated ester copolymers, or LLDPE or mixtures thereof, and (c) about 0.1-60 parts by weight in said blend of a blending component comprising a homopolymer or copolymer, or mixtures thereof, containing greater than about 50 wt.% of an α-olefin of 4-15 carbon atoms, for a total of components (a), (b) and (c) of 100 parts by weight.
Claim 2
Dependent Claim
142 words
An adhesive blend particularly for adhering to a wide variety of polar substrates and consisting essentially of: (a) about 0.1 to less than about 40 parts by weight in said blend of a graft copolymer of about 70-99.95 wt.% of a polyethylene backbone grafted with about 30-0.05 wt.% of at least one grafting monomer comprising at least one polymerizable ethylenically unsaturated carboxylic acid or carboxylic acid derivative for a total of 100%, and (b) about 0.1-99 parts by weight in said blend of LDPE, or ethylene-unsaturated ester copolymers, or LLDPE or mixtures thereof, and (c) about 0.1-60 parts by weight in said blend of a blending component comprising a homopolymer or copolymer, or mixtures thereof, containing greater than about 50 wt.% of an α-olefin of 4-15 carbon atoms, for a total of components (a), (b) and (c) of 100 parts by weight.
Claim 3
Dependent Claim
32 words
The blend of claim 1 wherein said ethylene-unsaturated ester copolymers of (b) comprise a copolymer of ethylene and vinyl acetate or ethyl methacrylate or ethyl acrylate or methyl acrylate or methyl methacrylate.
Claim 4
Dependent Claim
19 words
The blend of claim 1 wherein said LLDPE of (b) comprises a copolymer of ethylene and an unsaturated hydrocarbon.
Claim 5
Dependent Claim
16 words
The blend of claim 3 wherein said hydrocarbon comprises propylene, butene-1, 4-methyl pentene-1, hexene-1 or octene-1.
Claim 6
Dependent Claim
21 words
The blend of claim 1 wherein said α-olefin of component (c) comprises butene-1, 4-methyl pentene-1, hexene-1, octene-1 or pentene-1, or mixtures.
Claim 7
Dependent Claim
67 words
The blend of claim 1 wherein said grafting monomer comprises at least one of acrylic acid, methacrylic acid, maleic acid, fumaric 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 8
Dependent Claim
21 words
The blend of claim 1 wherein said backbone of (a) comprises polyethylene of a density within the range of 0.910-0.970 g/cc.
Claim 9
Dependent Claim
21 words
The blend of claim 1 wherein said (b) comprises LDPE or LLDPE of a density within the range of 0.910-0.945 g/cc.
Claim 10
Dependent Claim
22 words
The blend of claim 1 wherein said backbone of (a) comprises ethylene polymers or copolymers of ethylene with one or more alkenes.
Claim 11
Dependent Claim
20 words
The blend of claim 9 wherein said backbone of (a) comprises a linear polyethylene of high, medium or low density.
Claim 12
Dependent Claim
21 words
The blend of claim 9 wherein said backbone of (a) comprises blends of two or more of said polymers or copolymers.
Claim 13
Dependent Claim
31 words
The blend of claim 1 wherein said poly-α-olefin of blending component (c) comprises poly(butene-1) of melt index 0.5 to 50 g/10 min. and a density within the range of 0.88-0.93 g/cc.
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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) | 1987-12-11 | 1988-06-11 | 1988-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-12-11 | 1992-06-11 | 1992-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-12-11 | 1996-06-11 | 1996-12-11 | $7700.00 | Window Closed / Lapsed |