US4474928A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polyolefin resin blends with enhanced adhesion
Assignee: Dow Chemical Co
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Filing: 1982-06-28
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Granted: 1984-10-02
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Expires: 2002-06-28
Abstract
Abstract Adhesion of polyolefin 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 12:41
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L23/08; C08L23/0846; C08L23/0853; C08L23/0869; C08L39/00; C09; C09J; C09J123/00; C09J123/02; C08L2207/00; C08L2207/06; C08L2207/066; 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: 15
Claim 1
Independent Claim
52 words
A resin blend comprising a copolymer of ethylene and alpha, beta-ethylenically unsaturated carboxylic acids and an effective amount of a poly-2-oxazoline so that there is a detectable difference in bond strength between the copolymer resin without the poly-2-oxazoline and the copolymer resin with the poly-2-oxazoline with respect to the same substrate material.
Claim 2
Dependent Claim
52 words
A resin blend comprising a copolymer of ethylene and alpha, beta-ethylenically unsaturated carboxylic acids and an effective amount of a poly-2-oxazoline so that there is a detectable difference in bond strength between the copolymer resin without the poly-2-oxazoline and the copolymer resin with the poly-2-oxazoline with respect to the same substrate material.
Claim 3
Dependent Claim
30 words
The resin blend of claim 1 comprising from about 60 to about 99 weight percent of the copolymer and from about 1 to about 40 weight percent of the poly-2-oxazoline.
Claim 4
Dependent Claim
22 words
The resin blend of claim 1 wherein the poly-2-oxazoline is present in an amount from about 2 to about 20 weight percent.
Claim 5
Dependent Claim
13 words
The resin blend of claim 1 wherein the poly-2-oxazoline is an unhydrolyzed poly-2-oxazoline.
Claim 6
Dependent Claim
11 words
The resin blend of claim 4 wherein the polyoxazoline is poly(2-ethyl-2-oxazoline).
Claim 7
Dependent Claim
13 words
The resin blend of claim 1 wherein the copolymer is ethylene-acrylic acid copolymer.
Claim 8
Dependent Claim
17 words
The resin blend of claim 1 having increased environmental stress crack resistance over that of the copolymer.
Claim 9
Dependent Claim
9 words
The resin blend of claim 1 in particulate form.
Claim 10
Dependent Claim
12 words
The resin blend of claim 1 in the form of a film.
Claim 11
Independent Claim
42 words
A method of enhancing the adhesion of a copolymer of ethylene and alpha beta-ethylenically unsaturated carboxylic acid to a substrate and/or improving the enviromental stress crack resistance of said copolymer which comprises incorporating into the copolymer an effective amount of a poly-2-oxazoline.
Claim 12
Independent Claim
42 words
A method of enhancing the adhesion of a copolymer of ethylene and alpha beta-ethylenically unsaturated carboxylic acid to a substrate and/or improving the enviromental stress crack resistance of said copolymer which comprises incorporating into the copolymer an effective amount of a poly-2-oxazoline.
Claim 13
Dependent Claim
34 words
The method of claim 10 wherein the poly-2-oxazoline is added in an amount within the range of from about 2 to about 20 weight percent based on the total weight of copolymer and poly-2-oxazoline.
Claim 14
Dependent Claim
10 words
The method of claim 10 wherein the polyoxazoline is poly(2-ethyl-2-oxazoline).
Claim 15
Dependent Claim
18 words
The method of claim 10 wherein the poly-2-oxazoline is poly(2-ethyl-2-oxazoline) and the copolymer is an ethylene-acrylic acid copolymer.
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) | 1987-10-02 | 1988-04-02 | 1988-10-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-10-02 | 1992-04-02 | 1992-10-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-10-02 | 1996-04-02 | 1996-10-02 | $7700.00 | Window Closed / Lapsed |