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Patent US4881794A successfully refreshed from Google Patents.
US4881794A
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Low smoke and reduced flame fluorinated polymer compositions and cable constructions
Assignee: Arkema Inc
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Filing: 1988-08-25
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Granted: 1989-11-21
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Expires: 2008-08-25
Abstract
Abstract Fluorinated polymer based compositions which include aluminum silicates and electrical and fiber optic cable constructions made from such compositions have improved low smoke and flame retardant properties.
Inventors
- 👤 Edward J. Bartoszek
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 20:19
CPC Classifications
H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295; C; C08; C08K; C08K3/00; C08K3/34; H01B3/00; H01B3/18; H01B3/30; H01B3/44; H01B3/443; H01B3/445
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
73 words
A low smoke and flame retardant cable comprising a bundle of electrical conductors or fiber optic strands encased in a polymer jacket which comprises a vinylidene fluoride polymer composition having dispersed therein from about 0.2 to about 1.2 percent by weight of said composition of aluminum silicate selected from calcined or hydrated aluminum silicate consisting essentially of Al 2 O 3 . 2SiO 2 . nH 2 O wherein n =0 to 2.
Claim 2
Dependent Claim
73 words
A low smoke and flame retardant cable comprising a bundle of electrical conductors or fiber optic strands encased in a polymer jacket which comprises a vinylidene fluoride polymer composition having dispersed therein from about 0.2 to about 1.2 percent by weight of said composition of aluminum silicate selected from calcined or hydrated aluminum silicate consisting essentially of Al 2 O 3 . 2SiO 2 . nH 2 O wherein n =0 to 2.
Claim 3
Dependent Claim
64 words
The cable according to claim 1 wherein the fluorinated polymer composition comprises from about 93.8 to about 99.75 percent by weight vinylidene fluoride polymer, from about 0.2 to 1.2 percent by weight calcined or hydrous aluminum silicate, and from about 0.05 to about 5.0 percent by weight of one or more additives selected from color reducers, stabilizers, lubricants, plasticizers, coloring agents, reinforcements and fillers.
Claim 4
Dependent Claim
32 words
The cable according to claim 2 wherein the cable comprises a bundle of electrical conductors having said fluorinated polymer composition as primary insulation said bundle having a wrapping of an insulating tape.
Claim 5
Dependent Claim
23 words
The cable according to claim 3 wherein said vinylidene fluoride is a vinylidene fluoride (88 percent by weight)-hexafluoropropylene (12 percent by weight) copolymer.
Claim 6
Dependent Claim
32 words
The cable according to claim 1 wherein the cable comprises a bundle of electrical conductors having said fluorinated polymer composition as primary insulation, said bundle having a wrapping of an insulating tape.
References Cited (Backward Citations)
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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) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |