Patent JPS6415038A successfully refreshed from Google Patents.
US4543281A
Expired / Lapsed
US
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Fire or flame barrier material
Assignee: Norsk Kabelfabrik AS
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Filing: 1983-11-08
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Granted: 1985-09-24
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Expires: 2003-11-08
Abstract
Abstract A fire or flame barrier material comprising an ethylene copolymer matrix, 150-220 parts by weight of aluminum hydroxide and 150-220 parts by weight of calcium carbonate or calcium-magnesium carbonate. The material can also include a lubricating agent, an elasticizer, calcium oxide, a polymer softening agent, a color-aging agent, and an antioxidant agent.
Inventors
- 👤 Narve S. Pedersen
- 👤 Wilfred L. Persson
- 👤 Jan Hordvik
- 👤 Arvid Kristiansen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 19:58
CPC Classifications
C; C09; C09K; C09K21/00; C09K21/02; H; H01; H01B; H01B7/00; H01B7/17; H01B7/29; H01B7/295; Y; Y10; Y10S; Y10S428/00; Y10S428/92; Y10S428/921; Y10T; Y10T428/00; Y10T428/13; Y10T428/1352; Y10T428/139; Y10T428/1393
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
44 words
A fire or flame barrier material consisting essentially of 60-100 parts by weight of an ethylene copolymer matrix, 50-450 parts by weight of aluminum hydroxide and 150-600 parts by weight of a member selected from the group consisting of calcium carbonate and calcium-magnesium carbonate.
Claim 2
Dependent Claim
44 words
A fire or flame barrier material consisting essentially of 60-100 parts by weight of an ethylene copolymer matrix, 50-450 parts by weight of aluminum hydroxide and 150-600 parts by weight of a member selected from the group consisting of calcium carbonate and calcium-magnesium carbonate.
Claim 3
Dependent Claim
52 words
The fire or flame barrier material of claim 1 which also includes 11-30 parts by weight of an elasticizer, 0-10 parts by weight of a polymer softening agent, 8-15 parts by weight of a lubricating agent, 8-15 parts by weight of calcuim oxide and 1 part by weight of a coloring agent.
Claim 4
Dependent Claim
16 words
The fire or flame barrier material of claim 2 wherein said lubricating agent comprises paraffin wax.
Claim 5
Dependent Claim
16 words
The fire or flame barrier material of claim 2 wherein said elasticizer comprises ethylene propene rubber.
Claim 6
Dependent Claim
16 words
The fire or flame barrier material of claim 2 wherein said color-aging agent comprises carbon black.
Claim 7
Dependent Claim
35 words
The fire or flame barrier material of claim 2 which also includes an antioxidant agent comprising poly trimethyl dihydroquinoline present in an amount of about 1.5 parts by weight per 100 parts of said copolymer.
Claim 8
Dependent Claim
18 words
The fire or flame barrier material of claim 1 in the form of a coating or painting composition.
Claim 9
Dependent Claim
37 words
The fire or flame barrier material of claim 1 wherein said ethylene copolymer is selected from the group consisting of ethylene-vinylacetate, ethylene-acrylic acid, ethylene methacrylic acid, ethylene-ethylacrylate, ethylene-vinylacetate-methacrylic acid, ethylene-isobutyl acrylate, ethylene-methyl methacrylate and ethylene-vinyl acetate-carbon monoxide.
Claim 10
Dependent Claim
16 words
The fire or flame barrier material of claim 1 wherein said ethylene copolymer is ethylene-ethyl acrylate.
Claim 11
Dependent Claim
59 words
A rigid fire or flame barrier material consisting essentially of 100 parts of ethylene-ethyl acrylate, 220 parts by weight of aluminum hydroxide, 220 parts by weight of calcium carbonate, 10 parts by weight of a lubricant, 11 parts by weight of an elasticizer, 11 parts by weight of calcium oxide and 1 part by weight of a coloring agent.
Claim 12
Dependent Claim
59 words
A rigid fire or flame barrier material consisting essentially of 100 parts of ethylene-ethyl acrylate, 220 parts by weight of aluminum hydroxide, 220 parts by weight of calcium carbonate, 10 parts by weight of a lubricant, 11 parts by weight of an elasticizer, 11 parts by weight of calcium oxide and 1 part by weight of a coloring agent.
Claim 13
Dependent Claim
70 words
A flexible fire or flame barrier material consisting essentially of 80 parts by weight of ethylene-ethyl acrylate, 150 parts by weight of aluminum hydroxide, 150 parts by weight of calcium carbonate, 10 parts by weight of a lubricant, 30 parts by weight of an elasticizer, 11 parts by weight of calcium oxide, 10 parts by weight of a polymer softening agent and 1 part by weight of a coloring agent.
Claim 14
Dependent Claim
70 words
A flexible fire or flame barrier material consisting essentially of 80 parts by weight of ethylene-ethyl acrylate, 150 parts by weight of aluminum hydroxide, 150 parts by weight of calcium carbonate, 10 parts by weight of a lubricant, 30 parts by weight of an elasticizer, 11 parts by weight of calcium oxide, 10 parts by weight of a polymer softening agent and 1 part by weight of a coloring agent.
Claim 15
Dependent Claim
90 words
A fire or flame barrier material, in the form of a conduit for protecting electrical cables, comprising 80-100 parts by weight of ethylene-ethyl acrylate polymer, 150-220 parts by weight of aluminum hydroxide, 150-220 parts by weight of a member selected from the group consisting of calcium carbonate and calcium-magnesium carbonate, 11-30 parts by weight of an elasticizer, 0-10 parts by weight of a polymer softening agent, 10 parts by weight of a lubricating agent, 11 parts by weight of calcium oxide and 1 part by weight of a coloring agent.
Claim 16
Dependent Claim
90 words
A fire or flame barrier material, in the form of a conduit for protecting electrical cables, comprising 80-100 parts by weight of ethylene-ethyl acrylate polymer, 150-220 parts by weight of aluminum hydroxide, 150-220 parts by weight of a member selected from the group consisting of calcium carbonate and calcium-magnesium carbonate, 11-30 parts by weight of an elasticizer, 0-10 parts by weight of a polymer softening agent, 10 parts by weight of a lubricating agent, 11 parts by weight of calcium oxide and 1 part by weight of a coloring agent.
Claim 17
Dependent Claim
13 words
The fire or flame barrier material of claim 1 in sub-divided extrudate form.
Claim 18
Dependent Claim
12 words
The fire or flame barrier material of claim 1 in granular form.
Claim 19
Dependent Claim
13 words
The fire or flame barrier material of claim 1 in extruded tube form.
Claim 20
Dependent Claim
24 words
The extruded fire or flame barrier material in tube form of claim 15 provided with an external steel brading and an outer protective coating.
Claim 21
Dependent Claim
19 words
The extruded fire or flame resistant material of claim 16 wherein the outer protective coating is a plastic material.
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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) | 1988-09-23 | 1989-03-25 | 1989-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-09-23 | 1993-03-25 | 1993-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-09-23 | 1997-03-25 | 1997-09-24 | $7700.00 | Window Closed / Lapsed |