Patent US3852235A successfully refreshed from Google Patents.
US3852235A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Melt extrudable polyacetylene copolymer blends
Assignee: General Electric Co
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Filing: 1973-04-20
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Granted: 1974-12-03
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Expires: 1993-04-20
Abstract
Abstract A method of making polyacetylene extrudate is described involving the extrusion of a mixture of a polyacetylene and an organic solvent. The resulting extrudate can be heat treated to form carbonaceous products. The polyacetylene extrudate experiences an increase in strength to weight ratio upon heating to elevated temperatures. It is convertible to the high strength graphitized state.
Inventors
- 👤 C Krutchen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 07:20
CPC Classifications
C; C08; C08L; C08L49/00; D; D01; D01F; D01F9/00; D01F9/08; D01F9/12; D01F9/14; D01F9/20; D01F9/21
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
123 words
POLYACETYLENE BLENDS WHICH ARE MELT EXTRUDABLE AT TEMPERATURES OF FROM 100* TO 180*C, COMPRISING BY WEIGHT (A) FROM 20 TO 50 PERCENT BY WEIGHT OF POLYACETYLENE HAVING AN INTRINSIC VISCOSITY OF 0.5 TO 1.5 IN ORTHO-DICHLOROBENZENE AT 120*C IN THE FORM OF A COPOLYMER CONSISTING ESSENTIALLY OF FROM 80-92 MOLE PERCENT OF METHADIETHYNYLBENZENE UNITS AND 8-12 MOLE PERCENT OF PARADIETHYNYLBENZENE UNITS, AND (B) FROM 80 TO 50 PERCENT OF ORGANIC SOLVENT SELECTED FROM THE CLASS CONSISTING OF PARA-DICHLOROBENZENE, ORTHODICHLOROBENZENE, NITROBENZENE ANDHALOGENATED ARYL HYDROCARBONS HAVING AN AVERAGE WEIGHT PERCENT OF CHLORINE FROM ABOUT 12-75 PERCENT BASED ON THE TOTAL WEIGHT OF HALOGEN CARBON AND HYDROGEN, WHERE SAID BLENDS CAN BE IN THE FORM OF A FREE FLOW POWDER, A WET GRANULATED MIXTURE OR PASTE.
Claim 2
Dependent Claim
123 words
POLYACETYLENE BLENDS WHICH ARE MELT EXTRUDABLE AT TEMPERATURES OF FROM 100* TO 180*C, COMPRISING BY WEIGHT (A) FROM 20 TO 50 PERCENT BY WEIGHT OF POLYACETYLENE HAVING AN INTRINSIC VISCOSITY OF 0.5 TO 1.5 IN ORTHO-DICHLOROBENZENE AT 120*C IN THE FORM OF A COPOLYMER CONSISTING ESSENTIALLY OF FROM 80-92 MOLE PERCENT OF METHADIETHYNYLBENZENE UNITS AND 8-12 MOLE PERCENT OF PARADIETHYNYLBENZENE UNITS, AND (B) FROM 80 TO 50 PERCENT OF ORGANIC SOLVENT SELECTED FROM THE CLASS CONSISTING OF PARA-DICHLOROBENZENE, ORTHODICHLOROBENZENE, NITROBENZENE ANDHALOGENATED ARYL HYDROCARBONS HAVING AN AVERAGE WEIGHT PERCENT OF CHLORINE FROM ABOUT 12-75 PERCENT BASED ON THE TOTAL WEIGHT OF HALOGEN CARBON AND HYDROGEN, WHERE SAID BLENDS CAN BE IN THE FORM OF A FREE FLOW POWDER, A WET GRANULATED MIXTURE OR PASTE.
Claim 3
Dependent Claim
62 words
A blend in accordance with claim 1, where the polyacetylene is a terpolymer consisting essentially of i. 85 to 92 mole per cent of meta-diethynylbenzene units, ii. 4 to 10 mole per cent of para-diethynylbenzene units, iii. 2 to 6 mole per cent of bisphenol dipropargyl ether units, where the sum of (i), (ii) and (iii) units are 100 mole per cent.
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) | 1977-12-02 | 1978-06-03 | 1978-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-02 | 1982-06-03 | 1982-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-02 | 1986-06-03 | 1986-12-03 | $7700.00 | Window Closed / Lapsed |