Patent US4672093A successfully refreshed from Google Patents.
US4672093A
Expired / Lapsed
US
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Substituted acetylenic polymers and conductive materials formed therefrom
Assignee: Massachusetts Institute of Technology
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Filing: 1986-06-06
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Granted: 1987-06-09
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Expires: 2006-06-06
Abstract
Abstract A novel route to the manufacture of substituted polyacetylenes is disclosed in which polyacetylene is first reduced to render it n-type conductor and then treated with an organic halide to form an organic-substituted polyacetylene.
Inventors
- 👤 Gary E. Wnek
- 👤 Duncan H. Whitney
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:56
CPC Classifications
C; C08; C08F; C08F8/00; C08F8/02
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
37 words
A process for preparing a substituted polyacetylene, the process comprising A. reducing a polyacetylene material to render it an n-type conductor, and B. treating the reduced polyacetylene with an alkyl halide to form an alkyl substituted polyacetylene.
Claim 2
Dependent Claim
37 words
A process for preparing a substituted polyacetylene, the process comprising A. reducing a polyacetylene material to render it an n-type conductor, and B. treating the reduced polyacetylene with an alkyl halide to form an alkyl substituted polyacetylene.
Claim 3
Dependent Claim
35 words
The process of claim 1 wherein the step of reducing polyacetylene material further comprises treating the polyacetylene material with a reducing agent chosen from the group of naphthalene, benzophenone, diphenylmethyl, triphenylmethyl, fluorenyl, and indenyl salts.
Claim 4
Dependent Claim
13 words
The process of claim 2 wherein the reducing agent is an alkali naphthalide.
Claim 5
Dependent Claim
12 words
The process of claim 3 wherein the reducing agent is sodium naphthalide.
Claim 6
Dependent Claim
13 words
The process of claim 2 wherein the reducing agent is an organolithium compound.
Claim 7
Dependent Claim
24 words
The process of claim 1 wherein the step of reducing a polyacetylene material further comprises of reducing the polyacetylene material in an electrolytic cell.
Claim 8
Dependent Claim
17 words
The process of claim 6 wherein the electrolytic cell contains an electrolyte comprising lithium perchlorate in tetrahydrofuran.
Claim 9
Dependent Claim
13 words
The process of claim 1 wherein the alkyl halide is an alkyl chloride.
Claim 10
Dependent Claim
13 words
The process of claim 1 wherein the alkyl halide is an alkyl bromide.
Claim 11
Dependent Claim
13 words
The process of claim 1 wherein the alkyl halide is an alkyl iodide.
Claim 12
Dependent Claim
23 words
The process of claim 1 wherein the alkyl halide is an alkyl halide having a chain length of one to ten carbon atoms.
Claim 13
Dependent Claim
14 words
The process of claim 1 wherein the alkyl halide is a straight chain compound.
Claim 14
Dependent Claim
14 words
The process of claim 1 wherein the alkyl halide is a branched chain compound.
Claim 15
Dependent Claim
22 words
The process of claim 1 wherein the process further comprises doping the substituted polyaceltylene with a doping agent to render it conductive.
Claim 16
Dependent Claim
70 words
The process of claim 14 wherein the step of doping the substituted polyacetylene further includes treating the substituted polyacetylene with a p-type dopant selected from the group consisting of I 2 , Br 2 , AsF 5 , and at least one of the nitrosyl salts containing non-nucelophilic anions, ClO 4 --, PF 6 --, AsF 6 --, SO 3 CF 3 --, NO 3 --, and SO 4 --.
Claim 17
Dependent Claim
37 words
The process of claim 4 wherein the step of doping the substituted polyacetylene further includes treating the substituted polyacetylene with an n-type dopant selected from the group consisting of naphthalene, benzophenone, diphenylmethyl, triphenylmethyl, fluorenyl, and indenyl salts.
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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) | 1990-06-08 | 1990-12-08 | 1991-06-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-06-08 | 1994-12-08 | 1995-06-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-06-08 | 1998-12-08 | 1999-06-09 | $7700.00 | Window Closed / Lapsed |