Patent US513169A successfully refreshed from Google Patents.
Patent US2912410A successfully refreshed from Google Patents.
US2912410A
Expired / Lapsed
US
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Process of preparing a cured blend of form-stable, cross-linked polyethylene and polybutadiene and compositions thereof
Assignee: General Electric Co
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Filing: 1956-01-27
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Granted: 1959-11-10
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Expires: 1976-01-27
Abstract
No abstract record available.
Inventors
- 👤 Quinton P Cole
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 12:22
CPC Classifications
C; C08; C08L; C08L23/00; C08L23/02; C08L23/04; C08L23/06; C08L2312/00; C08L9/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
104 words
THE PROCESS FOR IMPROVING THE RESISTANCE TO CUTTHROUGH AT ELEVATED TEMPERATURES OF CROSS-LINKED POLYETHYLENE WHICH COMPRISES INCORPORATING IN THE POLYETHYLENE WHICH IS IN A FORM-STABLE STATE AND WILL NOT FLOW IN AN UNSUPPORTED STATE WHEN MEASURED AT 200*C, FLOW POLYMERIZED BUTADIENE-1-3 OF FROM 3.0 TO 6.0 INTRINSIC VISCOSITY IN AN AMOUNT EQUAL TO FROM 5 TO 40%, BY WEIGHT, OF THE TOTAL WEIGHT OF THE LATTER AND THE POLYETHYLENE, AND THEREAFTER HEATING THE MIXTURE OF INGREDIENTS IN THE ABSENCE OF A CURING AGENT FOR THE POLYMERIXED BUTADIENE AND POLYETHYLENE AT A TEMPERATURE OF FROM 250* TO 400*C, FOR FROM 15 SECONDS TO 7 HOURS.
Claim 2
Dependent Claim
104 words
THE PROCESS FOR IMPROVING THE RESISTANCE TO CUTTHROUGH AT ELEVATED TEMPERATURES OF CROSS-LINKED POLYETHYLENE WHICH COMPRISES INCORPORATING IN THE POLYETHYLENE WHICH IS IN A FORM-STABLE STATE AND WILL NOT FLOW IN AN UNSUPPORTED STATE WHEN MEASURED AT 200*C, FLOW POLYMERIZED BUTADIENE-1-3 OF FROM 3.0 TO 6.0 INTRINSIC VISCOSITY IN AN AMOUNT EQUAL TO FROM 5 TO 40%, BY WEIGHT, OF THE TOTAL WEIGHT OF THE LATTER AND THE POLYETHYLENE, AND THEREAFTER HEATING THE MIXTURE OF INGREDIENTS IN THE ABSENCE OF A CURING AGENT FOR THE POLYMERIXED BUTADIENE AND POLYETHYLENE AT A TEMPERATURE OF FROM 250* TO 400*C, FOR FROM 15 SECONDS TO 7 HOURS.
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) | 1962-11-09 | 1963-05-11 | 1963-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-11-09 | 1967-05-11 | 1967-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-11-09 | 1971-05-11 | 1971-11-10 | $7700.00 | Window Closed / Lapsed |