Patent US4416942A successfully refreshed from Google Patents.
US4416942A
Expired / Lapsed
US
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Laminates of lamellar articles and polyolefins
Assignee: EIDP Inc
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Filing: 1982-05-21
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Granted: 1983-11-22
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Expires: 2002-05-21
Abstract
Abstract A laminate of a first layer of a lamellar heterogeneous blend of a polyolefin and a condensation polymer incompatible with the polyolefin, and a second layer of a polyolefin, said layers being melt bonded together.
Inventors
- 👤 Robert C. DiLuccio
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 10:02
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/18; B32B27/06; B32B27/08; B29; B29C; B29C48/00; B29C48/022; B32B27/32; B32B27/34; B32B27/36; B29C48/03; B29C48/07; B29C48/08; B29C48/09; B29C48/10; B29K; B29K2105/00; B29K2105/06; B29K2105/16; B29K2995/00; B29K2995/0018; B29K2995/003; B32B38/00; B32B38/0012; B32B2038/0028; B32B2309/00; B32B2309/08; B32B2309/10; B32B2309/105; B32B2323/00; B32B2323/04; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/26; Y10T428/31504; Y10T428/31507; Y10T428/31725; Y10T428/31728; Y10T428/3175; Y10T428/31757; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31928
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
112 words
An at least two layer laminate comprising: (a) a layer of a polymer comprising a base polyolefin, a condensation polymer incompatible with the base polyolefin, and an alkylcarboxyl-substituted polyolefin wherein the base polyolefin and the condensation polymer are present in the article as thin, substantially two-dimensional, parallel and overlapping layers of material and the alkyl-carboxyl substituted polyolefin is present between the layers and adheres the layers together, and (b) a layer of a polyolefin or polyolefin copolymer film, said layer comprising 10 to 90 percent of the thickness of the laminate; said layers being melt bonded together such that the molecular networks of the layers at the lamination cite are adhered together.
Claim 2
Dependent Claim
112 words
An at least two layer laminate comprising: (a) a layer of a polymer comprising a base polyolefin, a condensation polymer incompatible with the base polyolefin, and an alkylcarboxyl-substituted polyolefin wherein the base polyolefin and the condensation polymer are present in the article as thin, substantially two-dimensional, parallel and overlapping layers of material and the alkyl-carboxyl substituted polyolefin is present between the layers and adheres the layers together, and (b) a layer of a polyolefin or polyolefin copolymer film, said layer comprising 10 to 90 percent of the thickness of the laminate; said layers being melt bonded together such that the molecular networks of the layers at the lamination cite are adhered together.
Claim 3
Dependent Claim
20 words
The laminate of claim 1 wherein the polyolefin layer comprises 25 to 75 percent of the thickness of the laminate.
Claim 4
Dependent Claim
14 words
The laminate of claim 1 or 2 in the form of a shaped article.
Claim 5
Dependent Claim
13 words
The laminate of claim 1 or 2 in the form of a film.
Claim 6
Dependent Claim
12 words
The laminate of claim 1 wherein the condensation polymer is a polyamide.
Claim 7
Dependent Claim
12 words
The laminate of claim 2 wherein the condensation polymer is a polyamide.
Claim 8
Dependent Claim
12 words
The laminate of claim 1 wherein the condensation polymer is a polyester.
Claim 9
Dependent Claim
12 words
The laminate of claim 2 wherein the condensation polymer is a polyester.
Claim 10
Dependent Claim
19 words
The laminate of claim 1, 2, 5, 6, 7 or 8 wherein the base polyolefin in (a) is polyethylene.
Claim 11
Dependent Claim
12 words
The laminate of claim 9 wherein the polyolefin in (b) is polyethylene.
Claim 12
Dependent Claim
18 words
The laminate of claim 1, 2, 5, 6, 7 or 8 wherein the polyolefin in (b) is polyethylene.
Claim 13
Dependent Claim
15 words
The laminate of claim 10 stretched at a temperature between about 120° and 135° C.
References Cited (Backward Citations)
US3093255A
Cited
US3373224A
Cited
US3373222A
Cited
US3373223A
Cited
US3435093A
Cited
US3639527A
Cited
US3873667A
Cited
US3857754A
Cited
US3975463A
Cited
US4151318A
Cited
US4309465A
Cited
DE2746181C2
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-11-21 | 1987-05-23 | 1987-11-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-21 | 1991-05-23 | 1991-11-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-21 | 1995-05-23 | 1995-11-22 | $7700.00 | Window Closed / Lapsed |