US2777890A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process of preparing oily butadiene polymers and products thereof
Assignee: EIDP Inc
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Filing: 1953-06-15
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Granted: 1957-01-15
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Expires: 1973-06-15
Abstract
No abstract record available.
Inventors
- 👤 Carol K Ikeda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 15:23
CPC Classifications
C; C07; C07C; C07C2/00; C07C2/02; C07C2/04; C07C2/38; C07C2/40; C07C2/403; C08; C08F; C08F36/00; C08F36/02; C08F36/04; C07C2527/00; C07C2527/06; C07C2527/08; C07C2527/12; C07C2527/1213; Y; Y10; Y10S; Y10S585/00; Y10S585/929; Y10S585/945
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
60 words
THE PROCESS OF PRODUCING OILY POLYMERS OF BUTADIENE1,3 WHICH COMPRISES (1) POLYMERIZING BUTADIENE-1,3 AT FROM -20* TO +20* C. IN THE PRESENCE OF BORON TRIFLUORIDE ETHERATE CONTAINING FROM 0.1 TO 1.4 MOLS OF WATER PER MOL OF BORON TRIFLUORIDE ETHERATE, AND (2) INCREASING THE VISCOSITY OF THE RESULTING POLYMER BY TREATING A SOLUTION THEREOF IN INERT SOLVENT WITH BORNOM TRIFLUORIDE.
Claim 2
Dependent Claim
60 words
THE PROCESS OF PRODUCING OILY POLYMERS OF BUTADIENE1,3 WHICH COMPRISES (1) POLYMERIZING BUTADIENE-1,3 AT FROM -20* TO +20* C. IN THE PRESENCE OF BORON TRIFLUORIDE ETHERATE CONTAINING FROM 0.1 TO 1.4 MOLS OF WATER PER MOL OF BORON TRIFLUORIDE ETHERATE, AND (2) INCREASING THE VISCOSITY OF THE RESULTING POLYMER BY TREATING A SOLUTION THEREOF IN INERT SOLVENT WITH BORNOM TRIFLUORIDE.
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) | 1960-01-15 | 1960-07-16 | 1961-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1964-01-15 | 1964-07-16 | 1965-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1968-01-15 | 1968-07-16 | 1969-01-15 | $7700.00 | Window Closed / Lapsed |