Patent US4731504A successfully refreshed from Google Patents.
US4731504A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Multi-layer film structure and electrical cable incorporating same
Assignee: Dow Chemical Co
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Filing: 1986-08-13
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Granted: 1988-03-15
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Expires: 2006-08-13
Abstract
Abstract A multi-layered adhesive composition particularly suited for adhesion between metallic substrates and vinyl chloride polymer resins particularly highly plasticized vinyl chloride polymer resins comprising a metal adherent layer, an intermediate layer and a vinyl chloride polymer adherent layer.
Inventors
- 👤 Felix Achille
- 👤 Daniel G. Pikula
- 👤 Patricia B. Leng
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:41
CPC Classifications
H; H01; H01B; H01B9/00; H01B9/02; H01B7/00; H01B7/17; H01B7/29; H01B7/295; C; C09; C09J; C09J7/00; C09J7/10; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/441; H01B3/443; H01B7/28; H01B7/282; H01B7/285; H01B7/288; H01B7/42; Y; Y02; Y02A; Y02A30/00; Y02A30/14; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/2942; Y10T428/2947; Y10T428/31504; Y10T428/31536; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/3192
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
108 words
A multiple layer adhesive film suitably employed to provide adhesion between a metallic substrate and a vinyl chloride polymer resin, the multiple layer adhesive film comprising a metal adherent layer of a copolymer of ethylene and up to about 20 percent by weight of one or more copolymerizable carboxy containing comonomers; an intermediate layer of a copolymer of ethylene and vinyl acetate containing from about 10 percent to about 40 percent by weight polymerized vinyl acetate; and a vinyl chloride polymer adherent layer of a polymer of ethylene and carbon monoxide or a copolymer of ethylene, carbon monoxide and one or more copolymerizable ethylenically unsaturated carboxy substituted comonomers.
Claim 2
Dependent Claim
108 words
A multiple layer adhesive film suitably employed to provide adhesion between a metallic substrate and a vinyl chloride polymer resin, the multiple layer adhesive film comprising a metal adherent layer of a copolymer of ethylene and up to about 20 percent by weight of one or more copolymerizable carboxy containing comonomers; an intermediate layer of a copolymer of ethylene and vinyl acetate containing from about 10 percent to about 40 percent by weight polymerized vinyl acetate; and a vinyl chloride polymer adherent layer of a polymer of ethylene and carbon monoxide or a copolymer of ethylene, carbon monoxide and one or more copolymerizable ethylenically unsaturated carboxy substituted comonomers.
Claim 3
Dependent Claim
29 words
A film according to claim 1, wherein the metal adherent layer additionally comprises the reaction product of up to about 10 percent by weight of a dicarboxylic acid anhydride.
Claim 4
Dependent Claim
30 words
A film according to claim 1, wherein the vinyl chloride polymer adherent layer comprises an ethylene carbon monoxide copolymer, an ethylene-acrylic acid-carbon monoxide terpolymer or an ethylene-vinyl acetate-carbon monoxide terpolymer.
Claim 5
Dependent Claim
25 words
A film according to claim 1, wherein the vinyl chloride polymer adherent layer comprises from about 5 percent to about 20 percent polymerized carbon monoxide.
Claim 6
Dependent Claim
133 words
A communications cable having improved fire resistance comprising an outer jacket of a vinyl chloride polymer resin, a multi-layer adhesive film comprising a metal adherent layer of a copolymer of ethylene and up to about 20 percent by weight of one or more copolymerizable carboxy containing comonomers; an intermediate layer of a copolymer of ethylene and vinyl acetate containing from about 10 percent to about 40 percent by weight polymerized vinyl acetate; and a vinyl chloride polymer adherent layer of a polymer of ethylene and carbon monoxide or a copolymer of ethylene, carbon monoxide and one or more copolymerizable ethylenically unsaturdated carboxy substituted comonomers, a metallic shield and a conductor assembly, the metallic shield being wrapped circumferentially around the conductor assembly and adhered to the jacket by means of the multi-layer adhesive film.
Claim 7
Dependent Claim
133 words
A communications cable having improved fire resistance comprising an outer jacket of a vinyl chloride polymer resin, a multi-layer adhesive film comprising a metal adherent layer of a copolymer of ethylene and up to about 20 percent by weight of one or more copolymerizable carboxy containing comonomers; an intermediate layer of a copolymer of ethylene and vinyl acetate containing from about 10 percent to about 40 percent by weight polymerized vinyl acetate; and a vinyl chloride polymer adherent layer of a polymer of ethylene and carbon monoxide or a copolymer of ethylene, carbon monoxide and one or more copolymerizable ethylenically unsaturdated carboxy substituted comonomers, a metallic shield and a conductor assembly, the metallic shield being wrapped circumferentially around the conductor assembly and adhered to the jacket by means of the multi-layer adhesive film.
Claim 8
Dependent Claim
21 words
A cable according to claim 5 additionally comprising a water absorbable layer disposed between the metallic shield and the conductor assembly.
Claim 9
Dependent Claim
16 words
A cable according to claim 6, wherein the water absorbable layer comprises a polymer of acrylamide.
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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) | 1991-03-15 | 1991-09-14 | 1992-03-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1995-03-15 | 1995-09-14 | 1996-03-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1999-03-15 | 1999-09-14 | 2000-03-15 | $7700.00 | Window Closed / Lapsed |