US4452959A
Expired / Lapsed
US
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Process for producing a gel-like composition of a high polymer of acetylene, and process for molding said composition
Assignee: Resonac Holdings Corp
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Filing: 1982-12-06
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Granted: 1984-06-05
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Expires: 2002-12-06
Abstract
Abstract Process for producing easily moldable composition of an acetylene high polymer by polymerizing acetylene using a catalyst system composed of (A) a transition metal compound containing at least one transition metal from Groups IVa, Va, VIa and VIII and (B) an organometallic compound containing at least one metal from Groups IIa, IIb, IIIb and IVb, the polymerization being carried out in a polymerization solvent containing the transition metal compound in a concentration of 0.0001 to 0.1 mole/liter to form a gel-like material consisting of an acetylene high polymer having a fibrous microcrystalline structure and the polymerization solvent.
Inventors
- 👤 Yukio Kobayashi
- 👤 Hideki Shirakawa
- 👤 Sakuji Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 15:43
CPC Classifications
C; C08; C08F; C08F38/00; C08F38/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
127 words
A process for producing a moldable composition of an acetylene high homopolymer, which comprises polymerizing acetylene using a catalyst system composed of (A) a transition metal compound of the formula Ti(OR) 4 wherein R represents alkyl having 4 carbon atoms, and (B) an organometallic compound of the formula AlR 3 wherein R represents alkyl having up to 10 carbon atoms, wherein the catalyst system contains 1 to 25 moles of the organometallic compound per mole of the transition metal of the transition metal compound, and the polymerization is carried out under stirring in a polymerization solvent containing the transition metal compound in a concentration of 0.0001 to 0.1 mole/liter to form an acetylene high homopolymer having a fibrous microcrystalline structure which is swollen with the polymerization solvent.
Claim 2
Dependent Claim
127 words
A process for producing a moldable composition of an acetylene high homopolymer, which comprises polymerizing acetylene using a catalyst system composed of (A) a transition metal compound of the formula Ti(OR) 4 wherein R represents alkyl having 4 carbon atoms, and (B) an organometallic compound of the formula AlR 3 wherein R represents alkyl having up to 10 carbon atoms, wherein the catalyst system contains 1 to 25 moles of the organometallic compound per mole of the transition metal of the transition metal compound, and the polymerization is carried out under stirring in a polymerization solvent containing the transition metal compound in a concentration of 0.0001 to 0.1 mole/liter to form an acetylene high homopolymer having a fibrous microcrystalline structure which is swollen with the polymerization solvent.
Claim 3
Dependent Claim
24 words
The process set forth in claim 1 wherein the concentration of the transition metal compound in the polymerization solvent is 0.001 to 0.1 mole/liter.
Claim 4
Dependent Claim
24 words
The process set forth in claim 1 wherein the concentration of the transition metal compound in the polymerization solvent is 0.01 to 0.1 mole/liter.
Claim 5
Dependent Claim
26 words
The process set forth in claim 1 wherein the polymerization of acetylene is carried out at a temperature in the range of -100° to 300° C.
Claim 6
Dependent Claim
25 words
The process set forth in claim 1 wherein the polymerization solvent is inert to the catalyst system and is liquid under the acetylene polymerizing conditions.
Claim 7
Dependent Claim
36 words
The process set forth in claim 1 wherein the polymerization solvent is an aromatic or aliphatic hydrocarbon, a halogenated aromatic or aliphatic hydrocarbon, an aromatic or aliphatic ether, an alicyclic compound, or an oxygen-containing heterocyclic compound.
Claim 8
Dependent Claim
49 words
The process set forth in claim 1 wherein the polymerization solvent is at least one compound selected from toluene, o-, m- or p-xylene, ethylbenzene, benzene, anisole, ethyl phenyl ether, diphenyl ether, dimethoxybenzene, 1,3,5-trimethoxybenzene, pentane, hexane, heptane, octane, nonane, decane, dodecane, cyclohexane, tetrahydrofuran, dioxane, diethyl ether and ethyl methyl ether.
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) | 1987-06-05 | 1987-12-05 | 1988-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-06-05 | 1991-12-05 | 1992-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-06-05 | 1995-12-05 | 1996-06-05 | $7700.00 | Window Closed / Lapsed |