US2528523A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for extruding and insolubilizing polymers of ethylene
Assignee: EIDP Inc
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Filing: 1948-06-12
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Granted: 1950-11-07
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Expires: 1968-06-12
Abstract
No abstract record available.
Inventors
- 👤 Kent Robert Eugene
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 12:48
CPC Classifications
B; B05; B05D; B05D7/00; B05D7/20; B29; B29C; B29C48/00; B29C48/022; C; C08; C08K; C08K5/00; C08K5/04; C08K5/14; D; D01; D01F; D01F6/00; D01F6/02; D01F6/04; B29C48/03; B29C48/05; B29K; B29K2101/00; B29K2101/10; B29K2301/00; B29K2301/10; Y; Y10; Y10T; Y10T428/00; Y10T428/29; Y10T428/2913; Y10T428/2933; Y10T428/294; Y10T428/31504; Y10T428/31678; Y10T428/31692; Y10T428/31696
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
95 words
PROCESS WHICH COMPRISES SHAPING AT A TEMPERATURE OF 110*C.-180*C. A NORMALLY SOLID POLYMER OF ETHYLENE, SAID POLYMER BEING SOLUBLE IN BOILING TRICHLOROETHYLENE, CONTAINING 1%-10%, BY WEIGHT THEREOF, OF A TERTIARY PEROXIDE OF THE FORMULA R-0-0-RH WHEREIN R AND R'' ARE SATURATED, NON-AROMATIC HYDROCARBON RADICALS, THE CARBON ATOM ATTACHED TO EACH OXYGEN ATOM OF THE PEROXIDE LINKAGE IS TERTIARY, AND THE SUM OF THE CARBON ATOMS IN R AND R'' IS FROM ELEVEN TO SIXTEEN, INCLUSIVE, AND THEREAFTER HEATING SAID SHAPED POLYMER AT 180*C.-250*C. UNTIL AT LEAST 50% OF SAID POLYMER IS INSOLUBLE IN BOILING TRICHLOROETHYLENE.
Claim 2
Dependent Claim
95 words
PROCESS WHICH COMPRISES SHAPING AT A TEMPERATURE OF 110*C.-180*C. A NORMALLY SOLID POLYMER OF ETHYLENE, SAID POLYMER BEING SOLUBLE IN BOILING TRICHLOROETHYLENE, CONTAINING 1%-10%, BY WEIGHT THEREOF, OF A TERTIARY PEROXIDE OF THE FORMULA R-0-0-RH WHEREIN R AND R'' ARE SATURATED, NON-AROMATIC HYDROCARBON RADICALS, THE CARBON ATOM ATTACHED TO EACH OXYGEN ATOM OF THE PEROXIDE LINKAGE IS TERTIARY, AND THE SUM OF THE CARBON ATOMS IN R AND R'' IS FROM ELEVEN TO SIXTEEN, INCLUSIVE, AND THEREAFTER HEATING SAID SHAPED POLYMER AT 180*C.-250*C. UNTIL AT LEAST 50% OF SAID POLYMER IS INSOLUBLE IN BOILING TRICHLOROETHYLENE.
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) | 1953-11-06 | 1954-05-08 | 1954-11-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1957-11-06 | 1958-05-08 | 1958-11-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1961-11-06 | 1962-05-08 | 1962-11-07 | $7700.00 | Window Closed / Lapsed |