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US3586661A
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US
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1,2-butadiene copolymers
Assignee: Honeywell International Inc
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Filing: 1969-08-04
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Granted: 1971-06-22
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Expires: 1989-08-04
Abstract
Abstract BUTADIENE COPOLYMERS OF MELTING POINT 30*-120*C. WITH THE MAJOR PROPORTION OF THE BUTADIENE CONTENT BEING COMBINED IN THE COPOLYMERS IN THE 1,2-FORM. THE COMONOMER IS A NON-CRYSTALLINE HYDROCARBON HAVING AT LEAST FIVE CARBON ATOMS IN THE MOLECULE AND HAVING A VINYL DOUBLE BOND CONJUGATED WITH AN OLEFINIC DOUBLE BOND. THE PROCESS OF MAKING EMPLOYS AS CATALYST A COMPLEX OF A COBALT COMPOUND WITH BUTADIENE OR OPEN CHAIN BUTADIENE DIMER AND WITH AN ORGANO METALLIC COMPOUND OF ZINC, LITHIUM OR ALUMINUM; AND A CATALYST MODIFIER OF FUMARIC ACID ESTER OR MALEIC ACID ESTER. THE COPOLYMERS ARE FORMULATED TO MOLDING COMPOUNDS WHICH CAN BE CURED RAPIDLY AND USED IN TRANSFER MOLDING.
Inventors
- 👤 Chester L Parris
- 👤 Leo S Rieve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:52
CPC Classifications
C; C08; C08F; C08F236/00; C08F236/02; C08F236/04; C08F236/06
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-06-21 | 1974-12-21 | 1975-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-21 | 1978-12-21 | 1979-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-21 | 1982-12-21 | 1983-06-22 | $7700.00 | Window Closed / Lapsed |