US4869963A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multilayer composite of an ethylene-vinyl alcohol polymer tied to a thermoplastic polymer
Assignee: General Electric Co
•
Filing: 1987-07-20
•
Granted: 1989-09-26
•
Expires: 2007-07-20
Abstract
Abstract A multilayer composite which comprises a layer of an ethylene vinylalcohol polymer tied to a thermoplastic polymer with a hydrogenated alkadiene vinyl aromatic block copolymer which is graft modified with an unsaturated acid anhydride or unsaturated dicarboxylic acid thereof.
Inventors
- 👤 Robert R. Gallucci
- 👤 Dana C. Bookbinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 06:14
CPC Classifications
B; B32; B32B; B32B27/00; B32B27/28; B32B27/06; B32B27/08; B32B27/281; B32B27/30; B32B27/302; B32B27/306; B32B27/36; B32B27/365; B32B2307/00; B32B2307/70; B32B2307/714; B32B2325/00; B32B2329/00; B32B2329/04; B32B2367/00; B32B2369/00; B32B2379/00; B32B2379/08; Y; Y10; Y10T; Y10T428/00; Y10T428/31504; Y10T428/31507; Y10T428/31533; Y10T428/31551; Y10T428/31573; Y10T428/31587; Y10T428/31721; Y10T428/31725; Y10T428/3175; Y10T428/31786; Y10T428/31797; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31917; Y10T428/3192; Y10T428/31924
Claims Analysis
Total Claims: 18
Claim 1
Independent Claim
39 words
A multilayer composite which comprises a layer of an ethylene vinylalcohol polymer tied to a thermoplastic polymer with a hydrogenated alkadiene vinyl aromatic block copolymer which is graft modified with an unsaturated acid anhydride or unsaturated dicarboxylic acid thereof.
Claim 2
Dependent Claim
39 words
A multilayer composite which comprises a layer of an ethylene vinylalcohol polymer tied to a thermoplastic polymer with a hydrogenated alkadiene vinyl aromatic block copolymer which is graft modified with an unsaturated acid anhydride or unsaturated dicarboxylic acid thereof.
Claim 3
Dependent Claim
42 words
The composite in accordance with claim 1 wherein the thermoplastic polymer is selected from the group consisting of polyolefins, polyamides, polyacrylates, polyethers, polycarbonates, polyurethanes, polyvinylidiene chlorides, polyimides, polyetherimides, polysulfonates, polysulfones, polyethersulfones, polyarylethersulfones, polyarylates, polyesters, styrene resins, polyhydroxyether resins and polyarylene sulfide resins.
Claim 4
Dependent Claim
16 words
The composite in accordance with claim 2 wherein the thermoplastic polymer is polycarbonate, polyetherimide, or polyester.
Claim 5
Dependent Claim
21 words
The in accordance with claim 1 wherein the hydrogenerated alkadiene block of the copolymer is derived from 1,3 butadiene or isoprene.
Claim 6
Dependent Claim
17 words
The composite in accordance with claim 1 wherein the vinyl aromatic is styrene, alphamethyl styrene, or paramethylstyrene.
Claim 7
Dependent Claim
34 words
The composite in accordance with claim 1 wherein the hydrogenated alkadiene vinyl aromatic block copolymer has a vinyl aromatic block at each end and a hydrogenated alkadiene block connecting the two vinyl aromatic blocks.
Claim 8
Dependent Claim
21 words
The of claim 1 wherein the grafting agent is a compound of the formula. ##STR2## or the dicarboxylic acid analogues thereof
Claim 9
Dependent Claim
26 words
wherein R is the same or different as R 1 and is alkyl of one to six carbon atoms, inclusive, or hydrogen; n=0, 1 or 2
Claim 10
Dependent Claim
26 words
wherein R is the same or different as R 1 and is alkyl of one to six carbon atoms, inclusive, or hydrogen; n=0, 1 or 2
Claim 11
Dependent Claim
26 words
R 2 and R 3 are the same or different and are hydrogen, alkyl of one to six carbon atoms, inclusive, phenyl, chloro or bromo; and
Claim 12
Dependent Claim
26 words
R 2 and R 3 are the same or different and are hydrogen, alkyl of one to six carbon atoms, inclusive, phenyl, chloro or bromo; and
Claim 13
Dependent Claim
21 words
R 4 =H, alkyl of one to six carboon atoms, aryl, alkyl, phenyl, Br, Cl, X`0 to 7, y=0 to 6.
Claim 14
Dependent Claim
21 words
R 4 =H, alkyl of one to six carboon atoms, aryl, alkyl, phenyl, Br, Cl, X`0 to 7, y=0 to 6.
Claim 15
Dependent Claim
21 words
The composite in accordance with claim 7 wherein the grafting agent is maleic anhydride or methyl maleic anhydride or itaconic anhydride.
Claim 16
Dependent Claim
22 words
The of claim 1 wherein the alkadiene is 1 butadiene, the vinyl aromatic is styrene, and the grafting agent is maleic anhydride.
Claim 17
Dependent Claim
14 words
The composite of claim 9 wherein the thermoplastic polymer is polycarbonate, polyester, or polyetherimide.
Claim 18
Dependent Claim
27 words
The composite in accordance with claim 10 wherein the multilayer composite is polycarbonate/styrene ethylene butylene styrene graft maleic anhydride/ethylene vinyl alcohol/styrene ethylene butylene styrene graft maleic anhydride/polypropylene.
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) | 1992-09-25 | 1993-03-27 | 1993-09-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-09-25 | 1997-03-27 | 1997-09-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-09-25 | 2001-03-27 | 2001-09-26 | $7700.00 | Window Closed / Lapsed |