US3594361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
1,2-polybutadiene compositions
Assignee: Honeywell International Inc
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Filing: 1969-09-23
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Granted: 1971-07-20
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Expires: 1989-09-23
Abstract
Abstract POLYBUTADIENE COMPOSITIONS OF MELTING POINT 50*-100* C. WITH THE MAJOR PROPORTION OF THE BUTADIENE CONTENT BEING COMBINED IN THE 1,2 FORM. THE CO-INGREDIENT IS RUBBERY, AMORPHOUS BUTADIENE POLYMER HAVING VINYL DOUBLE BONDS AND INTERNAL DOUBLE BONDS. 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
- 👤 Morris Plains
- 👤 Leo S Rieve
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:25
CPC Classifications
C; C08; C08F; C08F136/00; C08F136/02; C08F136/04
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) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |