Patent US4228060A successfully refreshed from Google Patents.
US4228060A
Expired / Lapsed
US
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Polymerization of acetylene
Assignee: Honeywell International Inc
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Filing: 1978-11-03
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Granted: 1980-10-14
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Expires: 1998-11-03
Abstract
Abstract A process is described for producing partially crystalline polyacetylene in the cis or trans configurations utilizingμ-(η 1 :η 5 -cyclopentadienyl)-tris(η-cyclopentadienyl)dititanium(Ti-Ti) catalyst. The resulting polyacetylene when "doped" with halogen additives is useful as an electrical conductor or semiconductor. Also described are polyacetylene "gels," consisting essentially of a solid polyacetylene and gel-forming liquid therefor, also containing up to about 10 percent by weight of catalyst, per weight of acetylene, which is used for production of the polyacetylene. The gels are stable to phase separation at room temperature in a closed system, and are useful in preparing randomly and partially chain-aligned polyacetylene films and articles.
Inventors
- 👤 Guido Pez
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:42
CPC Classifications
C; C08; C08F; C08F38/00; C08F38/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
76 words
A process for producing polyacetylene gel compositions comprising contacting acetylene with a mixture comprised of μ-(η 1 :η 5 -cyclopentadienyl) tris(η-cyclopentadienyl)-dititanium (Ti-Ti) catalyst, or nitrogen adduct complexes thereof, in an inert organic solvent therefor, at a temperature of about -120° to +200° C., under a pressure of about 0.0001 to 50 atmospheres, substantially in the absence of elemental oxygen and water, said contacting being conducted in a quiescent state thereby resulting in the polyacetylene gel composition.
Claim 2
Dependent Claim
76 words
A process for producing polyacetylene gel compositions comprising contacting acetylene with a mixture comprised of μ-(η 1 :η 5 -cyclopentadienyl) tris(η-cyclopentadienyl)-dititanium (Ti-Ti) catalyst, or nitrogen adduct complexes thereof, in an inert organic solvent therefor, at a temperature of about -120° to +200° C., under a pressure of about 0.0001 to 50 atmospheres, substantially in the absence of elemental oxygen and water, said contacting being conducted in a quiescent state thereby resulting in the polyacetylene gel composition.
Claim 3
Dependent Claim
146 words
A composition comprising a polymeric gel consisting essentially of a polyacetylene and a gel-forming liquid therefor, being an inert organic solvent, and selected from C 6 -C 14 aromatic hydrocarbons, C 5 -C 18 linear or branched acyclic or cyclic saturated aliphatic hydrocarbons, C 4 -C 6 saturated aliphatic cyclic mono- or diethers, C 7 -C 10 aromatic mono- or diethers, C 2 -C 6 linear or branched saturated aliphatic acylic mono- or diethers, C 3 -C 8 linear or branched saturated aliphatic tertaryamines, C 5 -C 8 cyclic mono- olefins, C 4 -C 12 linear or branched alpha olefins, and mixtures thereof; said composition containing up to a maximum of about 10 weight percent of catalyst per weight of polyacetylene, said catalyst being μ-(η 1 :η 5 -cyclopentadienyl)-tris(η-cyclopentadienyl) dititanium (Ti-Ti); said gel being stable to phase separation at about 25° C., in a closed system.
Claim 4
Dependent Claim
146 words
A composition comprising a polymeric gel consisting essentially of a polyacetylene and a gel-forming liquid therefor, being an inert organic solvent, and selected from C 6 -C 14 aromatic hydrocarbons, C 5 -C 18 linear or branched acyclic or cyclic saturated aliphatic hydrocarbons, C 4 -C 6 saturated aliphatic cyclic mono- or diethers, C 7 -C 10 aromatic mono- or diethers, C 2 -C 6 linear or branched saturated aliphatic acylic mono- or diethers, C 3 -C 8 linear or branched saturated aliphatic tertaryamines, C 5 -C 8 cyclic mono- olefins, C 4 -C 12 linear or branched alpha olefins, and mixtures thereof; said composition containing up to a maximum of about 10 weight percent of catalyst per weight of polyacetylene, said catalyst being μ-(η 1 :η 5 -cyclopentadienyl)-tris(η-cyclopentadienyl) dititanium (Ti-Ti); said gel being stable to phase separation at about 25° C., in a closed system.
Claim 5
Dependent Claim
14 words
The composition of claim 2 wherein said polyacetylene is mainly in the cis configuration.
Claim 6
Dependent Claim
14 words
The composition of claim 2 wherein said polyacetylene is mainly in the trans configuration.
Claim 7
Dependent Claim
22 words
The composition of claim 2 wherein said polyacetylene is present in an amount of about 10 wt. percent of the polymeric gel.
Claim 8
Dependent Claim
25 words
The composition of claim 1 wherein said gel-forming liquid is toluene, hexane, tetrahydrofuran, dioxane, diethyl ether, 1,2-dimethoxyethane, anisole, n-hexadecane, cyclohexane, cyclohexene, hexene, or mixtures thereof.
Claim 9
Dependent Claim
29 words
The composition of claim 2 wherein said catalyst is present in an amount of about 2 weight percent per weight of polyacetylene in the composition on a dry basis.
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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) | 1983-10-14 | 1984-04-14 | 1984-10-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-10-14 | 1988-04-14 | 1988-10-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-10-14 | 1992-04-14 | 1992-10-14 | $7700.00 | Window Closed / Lapsed |