US4452942A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Adhesive blends containing anacid or anhydride grafted LLDPE
Assignee: Enron Chemical Co
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Filing: 1982-02-19
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Granted: 1984-06-05
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Expires: 2002-02-19
Abstract
Abstract Compositions of matter having properties that make them strong adhesives to various substrates and especially to various polar substrates. These compositions comprise blends of graft copolymer of a linear low density 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 polyolefin resin. 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. The disclosure also includes the process or method that uses these blends for combining one or moe substrates.
Inventors
- 👤 Mitsuzo Shida
- 👤 Robert Zeitlin
- 👤 John Machonis, Jr.
- 👤 Ashok M. Adur
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 07:03
CPC Classifications
B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; B32B15/00; B32B15/04; B32B15/08; B32B15/18; B32B15/20; B32B27/00; B32B27/04; B32B27/06; B32B27/08; B32B27/32; B32B27/322; C; C09; C09J; C09J123/00; C09J123/02; C09J151/00; C09J151/06; B32B2311/00; B32B2311/24; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; C08L2666/24
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
130 words
An adhesive blend comprising: (a) about 0.1-95 parts by weight in said blend of a graft copolymer of about 70-99.95 wt. % of an LLDPE 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 anhydride or about 50-99.90 wt. % of LLDPE backbone cografted with about 0.05-25 wt. % of said grafting monomer and about 0.05-25 wt. % of an unsaturated ester, said LLDPE backbone having a density of about 0.91-0.939 g/cc, for a total of 100% and (b) about 99.9-5 parts by weight of a blending resin selected from the group consisting of homopolymers of ethylene, α-olefin copolymers of ethylene, copolymers of ethylene and ethylenically unsaturated esters or their derivatives, and blends thereof.
Claim 2
Dependent Claim
130 words
An adhesive blend comprising: (a) about 0.1-95 parts by weight in said blend of a graft copolymer of about 70-99.95 wt. % of an LLDPE 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 anhydride or about 50-99.90 wt. % of LLDPE backbone cografted with about 0.05-25 wt. % of said grafting monomer and about 0.05-25 wt. % of an unsaturated ester, said LLDPE backbone having a density of about 0.91-0.939 g/cc, for a total of 100% and (b) about 99.9-5 parts by weight of a blending resin selected from the group consisting of homopolymers of ethylene, α-olefin copolymers of ethylene, copolymers of ethylene and ethylenically unsaturated esters or their derivatives, and blends thereof.
Claim 3
Dependent Claim
43 words
The blend of claim 1 wherein said unsaturated ester of (a) includes dialkyl maleates, dialkyl fumarates, dialkyl itaconates, dialkyl mesaconates, dialkyl citraconates, alkyl acrylates, alkyl crotonates, alkyl tiglates and alkyl methacrylates where alkyl represents aliphatic, aryl-aliphatic and cycloaliphatic groups containing 1-12 carbon atoms.
Claim 4
Dependent Claim
61 words
The blend 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, methyl Nafdic anhydride, Himic anhydride, methyl Himic anhydride, x-methyl bicyclo(2.2.1)hept-5-ene-2,3-dicarboxylic acid anhydride and fumaric acid.
Claim 5
Dependent Claim
116 words
An adhesive blend comprising: (a) about 0.9-95 parts by weight in said blend of a graft copolymer of about 70-99.95 wt. % of an LLDPE 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 anhydride or about 50-99.90 wt. % of LLDPE backbone cografted with about 0.05-25 wt. % of said grafting monomer and about 0.05-25 wt. % of an unsaturated ester, said LLDPE backbone having a density of about 0.91-0.939 g/cc, for a total of 100% and (b) about 99.9-5 parts by weight of a blending resin consisting of copolymers of ethylene and ethylenically unsaturated esters or their derivatives.
Claim 6
Dependent Claim
116 words
An adhesive blend comprising: (a) about 0.9-95 parts by weight in said blend of a graft copolymer of about 70-99.95 wt. % of an LLDPE 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 anhydride or about 50-99.90 wt. % of LLDPE backbone cografted with about 0.05-25 wt. % of said grafting monomer and about 0.05-25 wt. % of an unsaturated ester, said LLDPE backbone having a density of about 0.91-0.939 g/cc, for a total of 100% and (b) about 99.9-5 parts by weight of a blending resin consisting of copolymers of ethylene and ethylenically unsaturated esters or their derivatives.
Claim 7
Dependent Claim
21 words
The blend of claim 4 wherein said blending resin comprises ethylene vinyl acetate copolymers, ethylene-methyl acrylate copolymers, or ethylene-ethyl acrylate copolymers.
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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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |