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US4913867A
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Thermal process for stretch-orientation of polyaniline films and fibers
Assignee: OHIO STATE UNIVERSITY RESEARCH FOUNDATION COLUMBUS OH
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Filing: 1989-02-02
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Granted: 1990-04-03
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Expires: 2009-02-02
Abstract
Abstract A process to produce oriented, crystalline polyaniline films using simultaneous heat treatment and stressing of polyaniline films. Films stressed while being held at elevated temperatures (T≧110° C.), showed anisotropic x-ray, IR and visible optical response.
Inventors
- 👤 Arthur J. Epstein
- 👤 Keith Cromack
- 👤 Mikolaj Jozefowicz
- 👤 John M. Ginder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 20:41
CPC Classifications
C; C08; C08J; C08J5/00; C08J5/18; B; B29; B29C; B29C55/00; B29C55/005; B29K; B29K2079/00; C08J2379/00; C08J2379/02
Claims Analysis
Total Claims: 34
Claim 1
Independent Claim
45 words
A process for producing an oriented polyaniline film comprising the steps of applying a stress to the film of an order of at least 1×10 7 N/m 2 and simultaneously heating the film rapidly to an elevated temperature of between 110° C. and 250° C.
Claim 2
Dependent Claim
45 words
A process for producing an oriented polyaniline film comprising the steps of applying a stress to the film of an order of at least 1×10 7 N/m 2 and simultaneously heating the film rapidly to an elevated temperature of between 110° C. and 250° C.
Claim 3
Dependent Claim
16 words
The process of claim 1 wherein the stress applied is approximately 2×10 7 N/m 2 .
Claim 4
Dependent Claim
22 words
The process of claim 1 further including the step of incorporating a plasticizer into the polyaniline film prior to heating the film.
Claim 5
Dependent Claim
11 words
The process of claim 3 wherein the plasticizer is N-methyl Pyrrolidinone.
Claim 6
Dependent Claim
23 words
The process of claim 4 including the step of removing the plasticizer by washing the film with hydrochloric acid followed by ammonium hydroxide.
Claim 7
Dependent Claim
56 words
A process for achieving macroscopic orientation of the polyaniline class of polymers comprising the steps of: applying a tensile force of between 1×10 7 N/m 2 and 2.6×10 7 N/m 2 to a specimen composed of the polyaniline class of polymers; and heating the specimen to an elevated temperature of between 110° C. and 250° C.
Claim 8
Dependent Claim
56 words
A process for achieving macroscopic orientation of the polyaniline class of polymers comprising the steps of: applying a tensile force of between 1×10 7 N/m 2 and 2.6×10 7 N/m 2 to a specimen composed of the polyaniline class of polymers; and heating the specimen to an elevated temperature of between 110° C. and 250° C.
Claim 9
Dependent Claim
28 words
The process of claim 6 further including the step of applying a plasticizer of the N-methyl pyrrolidinone class to the specimen prior to said heating of the specimen.
Claim 10
Dependent Claim
19 words
The process of claim 7 further including the step of washing the specimen after orientation to remove the plasticizer.
Claim 11
Dependent Claim
22 words
The process of claim 8 wherein said washing step includes an application of hydrochloric acid followed by an application of ammonium hydroxide.
Claim 12
Dependent Claim
18 words
The process of claim 6 wherein said heating step is achieved rapidly in coordination with said tensioning step.
Claim 13
Dependent Claim
16 words
The process of claim 6 wherein said heating step is achieved simultaneously with said tensioning step.
Claim 14
Dependent Claim
15 words
The process of claim 6 wherein said heating step is achieved in a non-oxidizing atmosphere.
Claim 15
Dependent Claim
18 words
The process of claim 6 wherein the specimen is a film composed of the polyaniline class of polymers.
Claim 16
Dependent Claim
18 words
The process of claim 6 wherein the specimen is a fiber composed of the polyaniline class of polymers.
Claim 17
Dependent Claim
24 words
The process of claim 6 wherein the specimen is a composite which is partially inclusive of fibers composed of the polyaniline class of polymers.
Claim 18
Dependent Claim
24 words
The process of claim 6 wherein the specimen is a composite which is partially inclusive of film composed of the polyaniline class of polymers.
Claim 19
Dependent Claim
15 words
The process of claim 6 wherein such specimen is a composite of polyaniline and polybutadiene.
Claim 20
Dependent Claim
15 words
The process of claim 6 wherein such specimen is a composite of polyaniline and polyethylene.
Claim 21
Dependent Claim
53 words
A process for achieving macroscopic orientation of the polyorthotoluidine derivative of polyaniline, comprising the steps of: applying a tensile force of between 1×10 7 N/m 2 and 2.6×10 7 N/m 2 to a specimen composed of the polymer; and heating such specimen to an elevated temperature of between 110° C. and 250° C.
Claim 22
Dependent Claim
53 words
A process for achieving macroscopic orientation of the polyorthotoluidine derivative of polyaniline, comprising the steps of: applying a tensile force of between 1×10 7 N/m 2 and 2.6×10 7 N/m 2 to a specimen composed of the polymer; and heating such specimen to an elevated temperature of between 110° C. and 250° C.
Claim 23
Dependent Claim
28 words
The process of claim 19 further including the step of applying a plasticizer of the N-methyl pyrrolidinone class to the specimen prior to said heating of the specimen.
Claim 24
Dependent Claim
19 words
The process of claim 20 further including the step of washing the specimen after orientation to remove the plasticizer.
Claim 25
Dependent Claim
22 words
The process of claim 21 wherein said washing step includes an application of hydrochloric acid followed by an application of ammonium hydroxide.
Claim 26
Dependent Claim
18 words
The process of claim 19 wherein said heating step is achieved rapidly in coordination with said tensioning step.
Claim 27
Dependent Claim
16 words
The process of claim 19 wherein said heating step is achieved simultaneously with said tensioning step.
Claim 28
Dependent Claim
15 words
The process of claim 19 wherein said heating step is achieved in a non-oxidizing atmosphere.
Claim 29
Dependent Claim
18 words
The process of claim 19 wherein the specimen is a film composed of the polyorthotoluidine derivative of polyaniline.
Claim 30
Dependent Claim
18 words
The process of claim 19 wherein the specimen is a fiber composed of the polyorthotoluidine derivative of polyaniline.
Claim 31
Dependent Claim
24 words
The process of claim 19 wherein the specimen is a composite which is partially inclusive of fibers composed of the polyorthotoluidine derivative of polyaniline.
Claim 32
Dependent Claim
24 words
The process of claim 19 wherein the specimen is a composite which is partially inclusive of film composed of the polyorthotoluidine derivative of polyaniline.
Claim 33
Dependent Claim
18 words
The process of claim 19 wherein the specimen is a composite of polyorthotoluidine derivative of polyaniline and polybutadiene.
Claim 34
Dependent Claim
18 words
The process of claim 19 wherein the specimen is a composite of polyorthotoluidine derivative of polyaniline and polyethylene.
References Cited (Backward Citations)
JPS62176008A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-04-02 | 1993-10-02 | 1994-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-02 | 1997-10-02 | 1998-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-02 | 2001-10-02 | 2002-04-03 | $7700.00 | Window Closed / Lapsed |