Patent US4198461A successfully refreshed from Google Patents.
US4198461A
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US
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Polymeric fiber masses, fibers therefrom, and processes for producing the same
Assignee: Raytheon Co
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Filing: 1978-05-15
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Granted: 1980-04-15
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Expires: 1998-05-15
Abstract
Abstract We have prepared a new class of polymeric fibers and masses which are produced by precipitation from solutions of the polymer. The fibers and fiber masses have novel and useful characteristics. A fiber mass of this invention is a coherent, three-dimensional network of interconnected crystalline polymeric fibers and fiber bundles randomly arrayed in all directions. The fibers are smaller in diameter than can be consistently produced by conventional fiber drawing and spinning techniques. The novel fiber masses are produced from solutions of fiber-forming linear organic polymers having regularly repeated chain structures. The polymers are precipitated from these solutions by simultaneously cooling and agitating the polymer solution at vibrations in the sonic frequency range. The fiber masses may then be removed from the solvent or, in the case of a polymerizable solvent, a composite may be formed.
Inventors
- 👤 Leon B. Keller
- 👤 Robert K. Jenkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 12:07
CPC Classifications
D; D04; D04H; D04H13/00; B; B29; B29C; B29C67/00; B29C70/00; B29C70/04; B29C70/28; B29C70/30; B29C70/36; D01; D01D; D01D5/00; D01D5/40; B29C2791/00; B29C2791/004; B29C2791/008; B29K; B29K2105/00; B29K2105/0002; B29K2223/00; B29K2301/00; B29K2301/12; B29K2995/00; B29K2995/0037; B29K2995/0041; B29K2995/0045; Y; Y10; Y10S; Y10S428/00; Y10S428/91; Y10T; Y10T428/00; Y10T428/29; Y10T428/2904; Y10T428/2907; Y10T428/2913; Y10T428/31504; Y10T428/31855; Y10T428/31909; Y10T428/31913; Y10T428/31931; Y10T428/31938; Y10T442/00; Y10T442/60
Claims Analysis
Total Claims: 21
Claim 1
Independent Claim
67 words
A three-dimensional fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles being branched and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 2
Dependent Claim
67 words
A three-dimensional fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles being branched and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 3
Dependent Claim
18 words
A fibrous mass of claim 1 wherein said fibers and fiber bundles are formed of a linear polyalkene.
Claim 4
Dependent Claim
40 words
A fibrous mass as defined in claim 1 wherein the fibers and fiber bundles are formed of a polymer selected from the group consisting of polyethylene, isotactic polypropylene, polyethylene oxide, isotactic poly 4-methylpentene-1, isotactic poly(butene-1), nylon, polystyrene and mixtures thereof.
Claim 5
Dependent Claim
17 words
A fibrous mass of claim 1 wherein said fibers and fiber bundles are formed of a polyethylene.
Claim 6
Dependent Claim
18 words
A fibrous mass of claim 1 wherein said fibers and fiber bundles are formed of an isotactic polypropylene.
Claim 7
Dependent Claim
18 words
A fibrous mass of claim 1 wherein said fibers and fiber bundles are formed of an isotactic poly(butene-1).
Claim 8
Dependent Claim
18 words
A fibrous mass of claim 1 wherein said fibers and fiber bundles are formed of an isotactic poly-4-methylpentene-1.
Claim 9
Dependent Claim
17 words
A fibrous mass of claim 1 wherein said fibers and fiber bundles are formed of a nylon.
Claim 10
Dependent Claim
72 words
A three-dimensional fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles having substantially circular cross sections, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles being branched and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 11
Dependent Claim
72 words
A three-dimensional fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles having substantially circular cross sections, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles being branched and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 12
Dependent Claim
85 words
A three-dimensional fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles having substantially circular cross sections, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles having been precipitated from solution to define a branched network and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic structural, thermal, electrical and optical properties.
Claim 13
Dependent Claim
85 words
A three-dimensional fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles having substantially circular cross sections, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles having been precipitated from solution to define a branched network and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic structural, thermal, electrical and optical properties.
Claim 14
Dependent Claim
87 words
A composite material comprising (1) a polymeric material in the form of a continuous phase having substantially uniformly dispersed therein (2) a fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles being branched and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 15
Dependent Claim
87 words
A composite material comprising (1) a polymeric material in the form of a continuous phase having substantially uniformly dispersed therein (2) a fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles being branched and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 16
Dependent Claim
15 words
A composite material of claim 11 wherein said material is formed of a linear polyalkene.
Claim 17
Dependent Claim
14 words
A composite material of claim 11 wherein said material is formed of a polyethylene.
Claim 18
Dependent Claim
15 words
A composite material of claim 11 wherein said material is formed of an isotactic polypropylene.
Claim 19
Dependent Claim
37 words
A composite material as defined in claim 11 wherein the material is formed of a polymer selected from the group consisting of polyethylene, isotactic polypropylene, polyethylene oxide, isotactic poly 4-methylpentene-1, isotactic poly(butene-1), nylon, polystyrene and mixtures thereof.
Claim 20
Dependent Claim
100 words
A composite material comprising (1) a polymeric material in the form of a continuous phase having substantially uniformly dispersed therein (2) a fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles having substantially circular cross sections, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles having been precipitated from solution to define a branched network and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
Claim 21
Dependent Claim
100 words
A composite material comprising (1) a polymeric material in the form of a continuous phase having substantially uniformly dispersed therein (2) a fibrous mass consisting essentially of crystalline, branched polymeric fibers and fiber bundles having substantially circular cross sections, said fiber bundles being formed of many fibrils in substantially parallel array, said fibers and fiber bundles having been precipitated from solution to define a branched network and being structurally integral each with the other at their points of branching so that the fibers and fiber bundles are randomly arranged in all directions to define a coherent mass having isotropic properties.
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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) | 1983-04-15 | 1983-10-15 | 1984-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-04-15 | 1987-10-15 | 1988-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-04-15 | 1991-10-15 | 1992-04-15 | $7700.00 | Window Closed / Lapsed |