US3005807A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for carboxylation of isoolefindiolefin copolymers
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1956-11-19
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Granted: 1961-10-24
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Expires: 1976-11-19
Abstract
No abstract record available.
Inventors
- 👤 Henry G Schutze
- 👤 Jr Willard H Bonner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 23:42
CPC Classifications
C; C08; C08F; C08F8/00; C08F2800/00; C08F2800/10
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
119 words
A PROCESS WHICH COMPRISES REACTING AN ISOOLEFINCONJUGATED DIOLEFIN COPOLYMER OF ABOUT 95 TO 99 MOL PERCENT OF NORMALLY GASEOUS OLEFIN WITH ABOUT 0.2 PERCENT OF A C4 TO C3 CONJUGATED DIOLEFIN WITH ABOUT 0.2 TO 1 MOL OF AN ALKALI METAL ALKYL PER MOL OF COMBINED CONJUGATED DIOLEFIN IN THE POLYMER IN SOLUTION IN A NONREACTIVE ORGANIC SOLVENT TO OBTAIN AN ALKALI METALCONTAINING INTERMEDIATE PRODUCT, CARBONATING SAID INTERMEDIATE PRODUCT IN SAID SOLUTION WITH SOLID DRY CARBON DIOXIDE TO OBTAIN AN ALKALI METAL CARBOXYLATE-CONTAINING COPOLYMER, AND ACIDIFYING SAID ALKAKI METAL CARB OXYLATECONTAINING COPOLYMER WITH AN EXCESS OF AN ACID TO CONVERT SAID CARBOXYLATE GROUPS TO CARBOXYL GROUPS, THE ALKYL GROUPS OF SAID ALKALI METAL CONTAINING 1 TO 14 CARBON ATOMS.
Claim 2
Dependent Claim
119 words
A PROCESS WHICH COMPRISES REACTING AN ISOOLEFINCONJUGATED DIOLEFIN COPOLYMER OF ABOUT 95 TO 99 MOL PERCENT OF NORMALLY GASEOUS OLEFIN WITH ABOUT 0.2 PERCENT OF A C4 TO C3 CONJUGATED DIOLEFIN WITH ABOUT 0.2 TO 1 MOL OF AN ALKALI METAL ALKYL PER MOL OF COMBINED CONJUGATED DIOLEFIN IN THE POLYMER IN SOLUTION IN A NONREACTIVE ORGANIC SOLVENT TO OBTAIN AN ALKALI METALCONTAINING INTERMEDIATE PRODUCT, CARBONATING SAID INTERMEDIATE PRODUCT IN SAID SOLUTION WITH SOLID DRY CARBON DIOXIDE TO OBTAIN AN ALKALI METAL CARBOXYLATE-CONTAINING COPOLYMER, AND ACIDIFYING SAID ALKAKI METAL CARB OXYLATECONTAINING COPOLYMER WITH AN EXCESS OF AN ACID TO CONVERT SAID CARBOXYLATE GROUPS TO CARBOXYL GROUPS, THE ALKYL GROUPS OF SAID ALKALI METAL CONTAINING 1 TO 14 CARBON ATOMS.
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) | 1964-10-23 | 1965-04-24 | 1965-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1968-10-23 | 1969-04-24 | 1969-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1972-10-23 | 1973-04-24 | 1973-10-24 | $7700.00 | Window Closed / Lapsed |