US3242157A
Expired / Lapsed
US
⏱️ 0.0 years remaining
In situ formic acid epoxidation of butadiene/alkyl aromatic copolymers with a boric acid catalyst
Assignee: FMC Corp
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Filing: 1962-12-20
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Granted: 1966-03-22
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Expires: 1982-12-20
Abstract
No abstract record available.
Inventors
- 👤 Seymour M Linder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:38
CPC Classifications
C; C08; C08G; C08G59/00; C08G59/02; C08G59/027; C08C; C08C19/00; C08C19/04; C08C19/06
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
47 words
A METHOD FOR THE EPOXIDATION OF A COPOLYMER OF BUTADIENE CONTAINING 5-50% BY WEIGHT OF AN ALKYL AROMATIC COMONOMER WHICH COMPRISES REACTING SAID COPOLYMER WITH FORMIC ACID AND HYDROGEN PEROXIDE IN THE PRESENCE OF 0.02-0.15 MOLE OF BORIC ACID PER MOLE OF DOUBLE BOND IN THE COPOLYMER.
Claim 2
Independent Claim
47 words
A METHOD FOR THE EPOXIDATION OF A COPOLYMER OF BUTADIENE CONTAINING 5-50% BY WEIGHT OF AN ALKYL AROMATIC COMONOMER WHICH COMPRISES REACTING SAID COPOLYMER WITH FORMIC ACID AND HYDROGEN PEROXIDE IN THE PRESENCE OF 0.02-0.15 MOLE OF BORIC ACID PER MOLE OF DOUBLE BOND IN THE COPOLYMER.
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) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |