US5068061A
Expired / Lapsed
US
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Electroconductive polymers containing carbonaceous fibers
Assignee: Dow Chemical Co
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Filing: 1989-12-08
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Granted: 1991-11-26
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Expires: 2009-12-08
Abstract
Abstract A composition comprising a thermoplastic electroconductive resin matrix containing a multiplicity of reinforcing carbonaceous fibers, the improvement which comprises said reinforcing fibers comprising resilient shaped reforming elongatable non-linear non-flammable conductive carbonaceous fibers, the fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio (1/d) of greater than 10:1.
Inventors
- 👤 Thomas M. Knobel
- 👤 Francis P. McCullough, Jr.
- 👤 Lance L. Black
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:57
CPC Classifications
B; B32; B32B; B32B5/00; B32B5/22; B32B5/24; B32B27/00; B32B27/12; B32B27/40; B32B5/02; B32B5/024; B32B5/28; C; C08; C08K; C08K7/00; C08K7/02; C08K7/04; C08K7/06; H; H01; H01B; H01B1/00; H01B1/20; H01B1/24; H05; H05K; H05K9/00; H05K9/0073; H05K9/0079; B32B2262/00; B32B2262/02; B32B2262/0253; B32B2262/0261; B32B2262/0276; B32B2262/06; B32B2262/062; B32B2262/08; B32B2262/10; B32B2262/101; B32B2262/106; B32B2305/00; B32B2305/10; B32B2305/18; B32B2305/188; C08K2201/00; C08K2201/016; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2915; Y10T428/2918; Y10T428/292; Y10T428/2922; Y10T428/2924; Y10T428/2929; Y10T428/2931; Y10T428/30
Claims Analysis
Total Claims: 24
Claim 1
Independent Claim
75 words
In a composition comprising a thermoplastic electroconductive resin matrix containing a multiplicity of reinforcing carbonaceous fibers, the improvement which comprises said reinforcing fibers comprising resilient shaped reforming elongatable non-linear non-flammable conductive carbonaceous fibers, the fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio (1/d) of greater than 10:1 and said resin matrix containing from about 0.5 to about 40 percent by weight, based on the composition, of the carbonaceous fibers.
Claim 2
Dependent Claim
75 words
In a composition comprising a thermoplastic electroconductive resin matrix containing a multiplicity of reinforcing carbonaceous fibers, the improvement which comprises said reinforcing fibers comprising resilient shaped reforming elongatable non-linear non-flammable conductive carbonaceous fibers, the fibers having a reversible deflection ratio of greater than 1.2:1 and an aspect ratio (1/d) of greater than 10:1 and said resin matrix containing from about 0.5 to about 40 percent by weight, based on the composition, of the carbonaceous fibers.
Claim 3
Dependent Claim
12 words
The composition of claim 1 wherein the fibers have a sinusoidal configuration.
Claim 4
Dependent Claim
12 words
The composition of claim 1 wherein the fibers have a coil-like configuration.
Claim 5
Dependent Claim
11 words
The composition of claim 1 wherein the resin is ionically conductive.
Claim 6
Dependent Claim
15 words
The composition of claim 1 wherein the composition is in the form of a sheet.
Claim 7
Dependent Claim
17 words
The composition of claim 1 wherein the composition is in the form of a three-dimensional shaped article.
Claim 8
Dependent Claim
14 words
The composition of claim 1 wherein the resin is an ethylene/carbon monoxide interpolymer resin.
Claim 9
Dependent Claim
10 words
The composition of claim 1 wherein the resin is polyurethane.
Claim 10
Dependent Claim
17 words
The composition of claim 1 containing from about 1 to about 5% by weight of carbonaceous fibers
Claim 11
Dependent Claim
19 words
The composition of claim 1 wherein the carbonaceous fibers have an average length of 0.5 to about 20 mm.
Claim 12
Dependent Claim
18 words
The composition of claim 1 wherein the carbonaceous fibers are in the form of a cloth or fabric.
Claim 13
Dependent Claim
13 words
The composition of claim 1 wherein the carbonaceous fibers are continuous carbonaceous fibers.
Claim 14
Dependent Claim
25 words
The composition of claim 1 wherein the carbonaceous fibers have diameter between 3 and 25 microns and a length between about 5 and 12 m.
Claim 15
Dependent Claim
26 words
The composition of claim 1 including polyethylene fibers in an amount to provide a carbonaceous fiber to polyethylene fiber blend at a ratio of about 1:1.
Claim 16
Dependent Claim
70 words
A static control composite comprising at least two thermoplastic resin layers, at least one of said thermoplastic layers being ionically conductive, and a layer comprising conductive flexible non-linear carbonaceous fibers between said thermoplastic resin layers, said carbonaceous fibers having a reversible deflection ratio greater than 1.2:1 and an aspect ratio of greater than 10:1, and said carbonaceous fibers comprising about 0.5 to about 40 percent by weight of said layer.
Claim 17
Dependent Claim
70 words
A static control composite comprising at least two thermoplastic resin layers, at least one of said thermoplastic layers being ionically conductive, and a layer comprising conductive flexible non-linear carbonaceous fibers between said thermoplastic resin layers, said carbonaceous fibers having a reversible deflection ratio greater than 1.2:1 and an aspect ratio of greater than 10:1, and said carbonaceous fibers comprising about 0.5 to about 40 percent by weight of said layer.
Claim 18
Dependent Claim
14 words
The composite of claim 15 wherein the surface resistivity is below 10 10 ohms.
Claim 19
Dependent Claim
17 words
The composite of claim 15 wherein said carbonaceous fibers are in the form of a fiber assembly.
Claim 20
Dependent Claim
15 words
The composite of claim 15 wherein said carbonaceous fibers are within a polymer resin matrix.
Claim 21
Dependent Claim
15 words
The composite of claim 15 wherein said ionically conductive layer comprises an ethylene/carbon monoxide interpolymer.
Claim 22
Dependent Claim
12 words
The composite of claim 15 wherein said ionically conductive layer comprises polyurethane.
Claim 23
Dependent Claim
12 words
The composite of claim 15 comprising two layers of non-linear carbonaceous fibers.
Claim 24
Dependent Claim
16 words
The composite of claim 15 wherein said carbonaceous fibers are blended with ethylene/carbon monoxide interpolymer fibers.
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) | 1994-11-25 | 1995-05-27 | 1995-11-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-11-25 | 1999-05-27 | 1999-11-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-11-25 | 2003-05-27 | 2003-11-26 | $7700.00 | Window Closed / Lapsed |