US5080978A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Poly(vinylalkylether)-containing hot-melt adhesives for polyethylene and polypropylene
Assignee: BP Corp North America Inc
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Filing: 1991-04-22
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Granted: 1992-01-14
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Expires: 2011-04-22
Abstract
Abstract Hot-melt adhesives based upon a mixture composed of poly(vinylmethylether), greater than about 10 weight percent of a thermoplastic resin and, optionally a tackifier resin and/or extender, are found to be superior for the binding of polyolefins such as polyethylene, polypropylene, and ethylene-propylene copolymers to themselves and to other substrates. In particular, the hot-melt adhesives are useful for bonding polyethylene-backed and latex-backed carpet to polyethylene, polypropylene, or ethylene-propylene copolymer.
Inventors
- 👤 Matthew A. Kulzick
- 👤 Wayne R. Pretzer
- 👤 Tsuei-Yun Lynch
- 👤 Paul A. Koning
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:03
CPC Classifications
C; C09; C09J; C09J129/00; C09J129/10; B; B32; B32B; B32B7/00; B32B7/04; B32B7/12; C09J123/00; C09J123/02; D; D06; D06N; D06N7/00; D06N7/0063; D06N7/0071; D06N7/0073; D06N7/0078; C08; C08L; C08L2666/00; C08L2666/02; C08L2666/04; D06N2203/00; D06N2203/04; D06N2203/041; D06N2203/042; D06N2203/045; D06N2203/047; D06N2203/06; D06N2203/061; D06N2209/00; D06N2209/04; D06N2209/045; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/31935
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
40 words
A hot-melt adhesive composition useful for binding polyethylene, polypropylene, and ethylene-propylene copolymers comprising at least about 10 weight percent of substantially amorphous poly(vinylmethylether) and at least about 10 percent by weight of a thermoplastic resin which is an ethylene-vinylacetate copolymer.
Claim 2
Dependent Claim
40 words
A hot-melt adhesive composition useful for binding polyethylene, polypropylene, and ethylene-propylene copolymers comprising at least about 10 weight percent of substantially amorphous poly(vinylmethylether) and at least about 10 percent by weight of a thermoplastic resin which is an ethylene-vinylacetate copolymer.
Claim 3
Dependent Claim
45 words
The composition of claim 1 which contains a tackifier resin selected from the group consisting of terpene resins, terpene-phenol resins, coumarone-indene resins, aliphatic and aromatic petroleum resins, hydrogenated petroleum resins, resins made by copolymerization of pure aromatic monomers, a wood rosin, and wood rosin esters.
Claim 4
Dependent Claim
53 words
A bonded structure comprising the adhesive of claim 1 and a solid substrate selected from the group consisting of high density polyethylene, low density polyethylene, polypropylene, ethylene-propylene copolymers, polymethylpentene, latex-backed carpet, polyethylene-backed carpet, high impact polystyrene, polyethylene terephthalate, poly(2,6-dimethyl-phenylene oxide) and blends thereof with polystyrene, and a copolymer of acrylonitrile, butadiene and styrene.
Claim 5
Dependent Claim
53 words
A bonded structure comprising the adhesive of claim 2 and a solid substrate selected from the group consisting of high density polyethylene, low density polyethylene, polypropylene, ethylene-propylene copolymers, polymethylpentene, latex-backed carpet, polyethylene-backed carpet, high impact polystyrene, polyethylene terephthalate, poly(2,6-dimethyl-phenylene oxide) and blends thereof with polystyrene, and a copolymer of acrylonitrile, butadiene and styrene.
Claim 6
Dependent Claim
13 words
A bonded structure comprising the adhesive of claim 2 and a polyethylene substrate.
Claim 7
Dependent Claim
13 words
A bonded structure comprising the adhesive of claim 2 and a polypropylene substrate.
Claim 8
Dependent Claim
14 words
A bonded structure comprising the adhesive of claim 2 and an ethylene-propylene copolymer substrate.
References Cited (Backward Citations)
US2970974A
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US3497574A
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US3409408A
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US3849353A
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Cited
JPS60173171A
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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) | 1995-01-13 | 1995-07-15 | 1996-01-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1999-01-13 | 1999-07-15 | 2000-01-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2003-01-13 | 2003-07-15 | 2004-01-14 | $7700.00 | Window Closed / Lapsed |