Patent US2957023A successfully refreshed from Google Patents.
US2957023A
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Treatment of plasticizer esters with alkali metal borohydrides
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1957-05-29
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Granted: 1960-10-18
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Expires: 1977-05-29
Abstract
No abstract record available.
Inventors
- 👤 Jr William A Dimler
- 👤 Alan A Schetelich
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 18:02
CPC Classifications
C; C08; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/12; C07; C07C; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
90 words
IN A METHOD FOR PREPARING A PLASTICIZER ESTER WHEREIN A CONTAMINATED C6 TO C14 OXO ALCOHOL CONTAINING CONNATE IMPURITIES, INCLUDING CARBONYL COMPOUNDS AND ACETALS, IS REACTED WITH AN ACIDIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS AND THEIR ANHYDRIDES, THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID OXO ALCOHOL WITH AN AMOUNT OF ALKALI METAL BOROHYDRIDE IN EXCESS OF 5 P.P.M. AND SUFFICIENT TO DESTROY SAID CONNATE IMPURITIES AND AGING THE ALKALI METAL BOROHYDRIDE CONTAINING OXO ALCOHOL FOR A PERIOD OF AT LEAST ONE DAY PRIOR TO SAID ESTERIFICATION REACTION.
Claim 2
Dependent Claim
90 words
IN A METHOD FOR PREPARING A PLASTICIZER ESTER WHEREIN A CONTAMINATED C6 TO C14 OXO ALCOHOL CONTAINING CONNATE IMPURITIES, INCLUDING CARBONYL COMPOUNDS AND ACETALS, IS REACTED WITH AN ACIDIC COMPOUND SELECTED FROM THE GROUP CONSISTING OF DIBASIC ACIDS AND THEIR ANHYDRIDES, THE IMPROVEMENT WHICH COMPRISES CONTACTING SAID OXO ALCOHOL WITH AN AMOUNT OF ALKALI METAL BOROHYDRIDE IN EXCESS OF 5 P.P.M. AND SUFFICIENT TO DESTROY SAID CONNATE IMPURITIES AND AGING THE ALKALI METAL BOROHYDRIDE CONTAINING OXO ALCOHOL FOR A PERIOD OF AT LEAST ONE DAY PRIOR TO SAID ESTERIFICATION REACTION.
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) | 1963-10-18 | 1964-04-18 | 1964-10-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-10-18 | 1968-04-18 | 1968-10-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-10-18 | 1972-04-18 | 1972-10-18 | $7700.00 | Window Closed / Lapsed |