US4532187A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin resin blends with enhanced adhesion and laminates
Assignee: Dow Chemical Co
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Filing: 1984-09-14
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Granted: 1985-07-30
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Expires: 2004-09-14
Abstract
Abstract Adhesion of polylefin resins to various substrates is enhanced by the incorporation of a poly-2-oxazoline, e.g., poly(2-ethyl-2-oxazoline) into the polyolefin.
Inventors
- 👤 Stephen M. Hoenig
- 👤 David P. Flores
- 👤 Sally P. Ginter
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 12:50
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C09; C09J; C09J123/00; C09J123/02; C08L2666/00; C08L2666/02; C08L2666/14; C08L2666/20; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31786; Y10T428/31797
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
56 words
A laminate of at least two dissimilar layers wherein one layer is a resin blend comprising a polyolefin and an effective amount of a poly-2-oxazoline such that there is a detectable difference in bond strength between a resin blend without the poly-2-oxazoline and the resin blend with the poly-2-oxazoline with respect to the same substrate material.
Claim 2
Dependent Claim
56 words
A laminate of at least two dissimilar layers wherein one layer is a resin blend comprising a polyolefin and an effective amount of a poly-2-oxazoline such that there is a detectable difference in bond strength between a resin blend without the poly-2-oxazoline and the resin blend with the poly-2-oxazoline with respect to the same substrate material.
Claim 3
Dependent Claim
32 words
The laminate of claim 1 wherein the polyolefin-poly-2-oxazoline resin blend comprises from about 60 to 99 weight percent of the polyolefin and from about 1 to 40 weight percent of the poly-2-oxazoline.
Claim 4
Dependent Claim
11 words
The laminate of claim 1 wherein the other layer is metal.
Claim 5
Dependent Claim
10 words
The laminate of claim 3 wherein the metal is aluminum.
Claim 6
Dependent Claim
12 words
The laminate of claim 1 wherein the other layer is a polymer.
Claim 7
Dependent Claim
10 words
The laminate of claim 5 wherein the polymer is polypropylene.
Claim 8
Dependent Claim
11 words
The laminate of claim 5 wherein the polymer is polyethylene terephthalate.
Claim 9
Dependent Claim
12 words
The laminate of claim 1 wherein said polyolefin is an ethylene copolymer.
Claim 10
Dependent Claim
12 words
The laminate of claim 8 wherein said ethylene copolymer is ethylene-acrylic acid.
Claim 11
Dependent Claim
13 words
The laminate of claim 1 wherein said polyolefin is a homopolymer of ethylene.
Claim 12
Dependent Claim
19 words
The laminate of claim 10 wherein said homopolymer of ethylene is low density polyethylene or linear low density polyethylene.
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) | 1988-07-29 | 1989-01-28 | 1989-07-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-07-29 | 1993-01-28 | 1993-07-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-07-29 | 1997-01-28 | 1997-07-30 | $7700.00 | Window Closed / Lapsed |