US2878176A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method for isomerizing polybutadiene
Assignee: Goodrich Corp
•
Filing: 1956-12-31
•
Granted: 1959-03-17
•
Expires: 1976-12-31
Abstract
No abstract record available.
Inventors
- 👤 Morton A Golub
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 16:25
CPC Classifications
C; C08; C08C; C08C19/00; C08C19/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
61 words
A METHOD FOR ISOMERIZING CIS 1,4-STRUCTURES IN POLYBUTADIENE TO TRANS 1,4-STRUCTURES WHICH COMPRISES EXPOSING TO ULTRA-VIOLET RADIATION A SOLUTION OF A POLYBUTADIENE POSSESSING MORE THAN ABOUT 10% CIS 1,4-STRUCTURES AND AN AMOUNT OF AN ORGANIC BROMINE COMPOUND HAVNG BROMINE ATTACHED TO AT LEAST ONE CARBON ATOM OF SAID COMPOUND IN AMOUNT OF AT LEAST ABOUT 0.01 GRAM PER GRAM OF POLYBUTADIENE.
Claim 2
Independent Claim
61 words
A METHOD FOR ISOMERIZING CIS 1,4-STRUCTURES IN POLYBUTADIENE TO TRANS 1,4-STRUCTURES WHICH COMPRISES EXPOSING TO ULTRA-VIOLET RADIATION A SOLUTION OF A POLYBUTADIENE POSSESSING MORE THAN ABOUT 10% CIS 1,4-STRUCTURES AND AN AMOUNT OF AN ORGANIC BROMINE COMPOUND HAVNG BROMINE ATTACHED TO AT LEAST ONE CARBON ATOM OF SAID COMPOUND IN AMOUNT OF AT LEAST ABOUT 0.01 GRAM PER GRAM OF POLYBUTADIENE.
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) | 1962-03-16 | 1962-09-15 | 1963-03-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1966-03-16 | 1966-09-15 | 1967-03-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1970-03-16 | 1970-09-15 | 1971-03-17 | $7700.00 | Window Closed / Lapsed |