US4519939A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Particulate doped polyacetylene
Assignee: Bayer AG
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Filing: 1982-03-26
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Granted: 1985-05-28
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Expires: 2002-03-26
Abstract
Abstract A process for the production of a suspension of doped polyacetylene particles, in which process acetylene is initially polymerized in a suspending agent with the formation of a suspension of polyacetylene particles in "burr" form, the catalyst is deactivated or removed, the solvent is optionally exchanged, and p- or n-doping is then carried out by adding a dopant additive in substance or in solution to the suspension.
Inventors
- 👤 Jurgen Hocker
- 👤 Hans K. Muller
- 👤 Bruno Broich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 18:53
CPC Classifications
C; C08; C08F; C08F138/00; C08F138/02
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
102 words
A process for the production of a suspension suitable for forming films and coatings by spray-drying of doped polyacetylene particles, said process comprising introducing acetylene into an organic solvent which is a hydrocarbon or halogenated hydrocarbon and contains, as a Ziegler catalyst, a catalytic amount of a reaction product of (1) a metal compound of Groups IVb, Vb, VIb, VIIb, or VIII of the Periodic Table and (2) an aluminium alkyl or aluminum alkyl halide to thereby form shaped polyacetylene particles suspended in the organic solvent, deactivating the Ziegler catalyst, and p- or n-doping the polyacetylene particles by adding a dopant additive.
Claim 2
Dependent Claim
102 words
A process for the production of a suspension suitable for forming films and coatings by spray-drying of doped polyacetylene particles, said process comprising introducing acetylene into an organic solvent which is a hydrocarbon or halogenated hydrocarbon and contains, as a Ziegler catalyst, a catalytic amount of a reaction product of (1) a metal compound of Groups IVb, Vb, VIb, VIIb, or VIII of the Periodic Table and (2) an aluminium alkyl or aluminum alkyl halide to thereby form shaped polyacetylene particles suspended in the organic solvent, deactivating the Ziegler catalyst, and p- or n-doping the polyacetylene particles by adding a dopant additive.
Claim 3
Dependent Claim
40 words
A suspension of n- or p-doped polyacetylene particles in burr-form, obtainable by the process of Claim 1, having particle diameters of from 0.01 to 1 mm and containing from 0.01 to 30 grams of doped polyacetylene per liter of suspension.
Claim 4
Dependent Claim
23 words
Films of doped polyacetylene obtainable by the process of claim 1, said films being made by removing the organic solvent from the suspension.
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) | 1988-05-27 | 1988-11-26 | 1989-05-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-27 | 1992-11-26 | 1993-05-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-27 | 1996-11-26 | 1997-05-28 | $7700.00 | Window Closed / Lapsed |