US2940912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Initiation of polymerization by preirradiated solid carboxylic acids, amides and nitriles
Assignee: EIDP Inc
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Filing: 1956-10-01
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Granted: 1960-06-14
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Expires: 1976-10-01
Abstract
No abstract record available.
Inventors
- 👤 Blaine C Mckusick
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 22:51
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46; B; B01; B01J; B01J19/00; B01J19/08; B01J19/081; C08F4/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
93 words
THE PROCESS OF POLYMERIZING AN ADDITION-POLYMERIZABLE, ETHYLENICALLY-UNSATURATED MONOMER WHICH COMPRISES SEQUENTIALLY (1) IRRADIATING A SOLID, CRYSTALLINE, SATURATED NONPOLYMERIZABLE MEMBER OF THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS OF 2-10 CARBONS AND COMPOUNDS HYDROLYZABLE THERETO, SAID MEMBER HAVING A CRYSTALLINE MELTING POINT OF AT LEAST 50*C., WITH ABOUT 0.1-30,000 WATT-SEC./G. OF IONIZING RADIATION HAVING AN ENERGY OF AT LEAST 0.1 M.E.V. TO PRODUCE FREE RADICALS THEREIN, AND (2) INTRODUCING THE IRRADIATED MEMBER INTO A SUBSTANTIALLY OXYGEN-FREE SYSTEM CONTAINING SAID ADDITION-POLYMERIZABLE, ETHYLENICALLY-UNSATURATED MONOMER, THE FREE RADICALS IN THE IRRADIATED MEMBER SERVING TO INITIATE THE POLYMERIZATION.
Claim 2
Dependent Claim
93 words
THE PROCESS OF POLYMERIZING AN ADDITION-POLYMERIZABLE, ETHYLENICALLY-UNSATURATED MONOMER WHICH COMPRISES SEQUENTIALLY (1) IRRADIATING A SOLID, CRYSTALLINE, SATURATED NONPOLYMERIZABLE MEMBER OF THE GROUP CONSISTING OF ALIPHATIC CARBOXYLIC ACIDS OF 2-10 CARBONS AND COMPOUNDS HYDROLYZABLE THERETO, SAID MEMBER HAVING A CRYSTALLINE MELTING POINT OF AT LEAST 50*C., WITH ABOUT 0.1-30,000 WATT-SEC./G. OF IONIZING RADIATION HAVING AN ENERGY OF AT LEAST 0.1 M.E.V. TO PRODUCE FREE RADICALS THEREIN, AND (2) INTRODUCING THE IRRADIATED MEMBER INTO A SUBSTANTIALLY OXYGEN-FREE SYSTEM CONTAINING SAID ADDITION-POLYMERIZABLE, ETHYLENICALLY-UNSATURATED MONOMER, THE FREE RADICALS IN THE IRRADIATED MEMBER SERVING TO INITIATE THE POLYMERIZATION.
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) | 1963-06-14 | 1963-12-14 | 1964-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-06-14 | 1967-12-14 | 1968-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-06-14 | 1971-12-14 | 1972-06-14 | $7700.00 | Window Closed / Lapsed |