Patent US3376575A successfully refreshed from Google Patents.
Patent US2579596A successfully refreshed from Google Patents.
US2579596A
Expired / Lapsed
US
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Process for polymerizing large bodies of resins
Assignee: Westinghouse Electric Corp
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Filing: 1948-07-14
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Granted: 1951-12-25
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Expires: 1968-07-14
Abstract
No abstract record available.
Inventors
- 👤 Herbert F Minter
- 👤 Milton M Leven
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 23:42
CPC Classifications
C; C08; C08F; C08F2/00; C08F2/46
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN THE PROCESS OF POLYMERIZING A RELATIVELY LARGE BODY OF A COMPLETELY POLYMERIZABLE LIQUID COMPOSITION COMPOSED OF A SOLUTION OF AN UNSATURATED POLYESTER OF AT LEAST ONE DICARBOXYLIC ACID AND A LIQUID POLYMERIZABLE MONOMER HAVING THE GROUP H2C=C<, INTO A HOMOGENEOUS SOLID, THE STEPS OF COMPRISING DISSOLVING A PEROXIDE CATALYST IN THE COMPOSITION, THE PEROXIDE CATALYST BEING THE ONLY CATALYST FOR THE REACTION, PLACING THE CATALYZED COMPOSITION IN AN OPEN CONTAINER OF AN INERT, NON-REACTIVE MATERIAL, THE CONTAINER BEING OF CIRCULAR CROSS-SECTION, COVERING THE COMPOSITION IN THE CONTAINER WITH A LAYER OF 1,5PENTANEDIOL TO SEAL THE COMPOSITION AGAINST THE ENTRY OF ATMOSPHERIC GASES AND MOISTURE, REDUCING THE TEMPERATURE OF THE COMPOSITION TO BETWEEN 5* C. AND 18* C. IN THE ABSENCE OF PHOTOCATALYTIC LIGHT, THE TEMPERATURE BEING RELATED TO THE INTERNAL DIAMETER OF THE CONTAINER BY THE EMPIRICAL EQUATION
Claim 2
Dependent Claim
139 words
IN THE PROCESS OF POLYMERIZING A RELATIVELY LARGE BODY OF A COMPLETELY POLYMERIZABLE LIQUID COMPOSITION COMPOSED OF A SOLUTION OF AN UNSATURATED POLYESTER OF AT LEAST ONE DICARBOXYLIC ACID AND A LIQUID POLYMERIZABLE MONOMER HAVING THE GROUP H2C=C<, INTO A HOMOGENEOUS SOLID, THE STEPS OF COMPRISING DISSOLVING A PEROXIDE CATALYST IN THE COMPOSITION, THE PEROXIDE CATALYST BEING THE ONLY CATALYST FOR THE REACTION, PLACING THE CATALYZED COMPOSITION IN AN OPEN CONTAINER OF AN INERT, NON-REACTIVE MATERIAL, THE CONTAINER BEING OF CIRCULAR CROSS-SECTION, COVERING THE COMPOSITION IN THE CONTAINER WITH A LAYER OF 1,5PENTANEDIOL TO SEAL THE COMPOSITION AGAINST THE ENTRY OF ATMOSPHERIC GASES AND MOISTURE, REDUCING THE TEMPERATURE OF THE COMPOSITION TO BETWEEN 5* C. AND 18* C. IN THE ABSENCE OF PHOTOCATALYTIC LIGHT, THE TEMPERATURE BEING RELATED TO THE INTERNAL DIAMETER OF THE CONTAINER BY THE EMPIRICAL EQUATION
References Cited (Backward Citations)
US2195362A
Cited
US2467527A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1954-12-24 | 1955-06-25 | 1955-12-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1958-12-24 | 1959-06-25 | 1959-12-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1962-12-24 | 1963-06-25 | 1963-12-25 | $7700.00 | Window Closed / Lapsed |