Patent US3227780A successfully refreshed from Google Patents.
US3227780A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,5,9-cyclododecatriene and 1,2,4 - trivinylcyclohexane as cross-linking monomers for unsaturated polyester resins
Assignee: Hercules Powder Co
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Filing: 1963-05-07
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Granted: 1966-01-04
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Expires: 1983-05-07
Abstract
No abstract record available.
Inventors
- 👤 Brack Karl
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:58
CPC Classifications
C; C08; C08L; C08L67/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
THE PROCESS OF CROSS-LINKING AN UNSATURATED POLYESTER WHICH COPRISES REACTING AN ESSENTIALLY LINEAR UNSATURATED POLYESTER WHICH IS A RESINOUS POLYCONDENSATION REACTION PRODUCT OF AN A,B-UNSATURATED DICARBOXYLICACID AND A DIOL, AND HAVING A PLURALITY OF POLYMERIZABLE A,B-ENAL GROUPS IN EACH POLYESTER MOLECULE WITH A CROSSLINKING AGENT SELECTED FROM THE GROUP CONSISTING OF 1,5,9CYCLODODECATRIENE, 1,2,4-TRIVENYLCYCLOHXANE, AND MIXTURES THEREOF IN THE PRESENCE OF A FREE-RADICAL GENERATING CATALYST.
Claim 2
Dependent Claim
64 words
THE PROCESS OF CROSS-LINKING AN UNSATURATED POLYESTER WHICH COPRISES REACTING AN ESSENTIALLY LINEAR UNSATURATED POLYESTER WHICH IS A RESINOUS POLYCONDENSATION REACTION PRODUCT OF AN A,B-UNSATURATED DICARBOXYLICACID AND A DIOL, AND HAVING A PLURALITY OF POLYMERIZABLE A,B-ENAL GROUPS IN EACH POLYESTER MOLECULE WITH A CROSSLINKING AGENT SELECTED FROM THE GROUP CONSISTING OF 1,5,9CYCLODODECATRIENE, 1,2,4-TRIVENYLCYCLOHXANE, AND MIXTURES THEREOF IN THE PRESENCE OF A FREE-RADICAL GENERATING CATALYST.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |