US3341570A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Esterification in the presence of the catalyst combinations-tin dibasic acid carboxylates and either sulfuric, benzenesulfonic or toluene sulfonic acid
Assignee: Gulf Research and Development Co
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Filing: 1963-04-01
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Granted: 1967-09-12
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Expires: 1983-04-01
Abstract
No abstract record available.
Inventors
- 👤 Jr Walter P Barie
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:43
CPC Classifications
C; C07; C07C; C07C67/00; C07C67/08
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
115 words
A PROCESS FOR THE PRODUCTION OF A MONOMERIC ESTER HAVING IMPROVED COLOR WHICH COMPRISES CONTACTING AN AROMATIC ORGANIC ACID REACTANT HAVING BETWEEN 1 AND 4 CARBOXYL GROUPS PER MOLECULE WITH A SATUREATED UNSUBSTITUTED ALIPHATIC ALCOHOL REACTANT HAVING BETWEEN 4 AND 37 CARBON ATOMS PER MOLECULE AND WHEREIN AT LEAST ONE OF THE TWO REACTANTS IS MONOFUNCTIONAL UNDER ESTERIFICATION CONDITIONS IN THE PRESENCE OF A STRONG ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID, BENZENE SULFONIC ACID AND PARATOLUENE SULFONIC ACID WHEREIN SAID STRONG ACID CATALYST HAS A HYDROGEN ION CONCENTRATION EQUIVALENT TO SULFURIC ACID HAVING AN H2SO4 CONTENT OF AT LEAST 80 PERCENT AND A TIN DIBASIC ACID CARBOXYLATE HAVING THE GENERAL FORMULA
Claim 2
Dependent Claim
115 words
A PROCESS FOR THE PRODUCTION OF A MONOMERIC ESTER HAVING IMPROVED COLOR WHICH COMPRISES CONTACTING AN AROMATIC ORGANIC ACID REACTANT HAVING BETWEEN 1 AND 4 CARBOXYL GROUPS PER MOLECULE WITH A SATUREATED UNSUBSTITUTED ALIPHATIC ALCOHOL REACTANT HAVING BETWEEN 4 AND 37 CARBON ATOMS PER MOLECULE AND WHEREIN AT LEAST ONE OF THE TWO REACTANTS IS MONOFUNCTIONAL UNDER ESTERIFICATION CONDITIONS IN THE PRESENCE OF A STRONG ACID CATALYST SELECTED FROM THE GROUP CONSISTING OF SULFURIC ACID, BENZENE SULFONIC ACID AND PARATOLUENE SULFONIC ACID WHEREIN SAID STRONG ACID CATALYST HAS A HYDROGEN ION CONCENTRATION EQUIVALENT TO SULFURIC ACID HAVING AN H2SO4 CONTENT OF AT LEAST 80 PERCENT AND A TIN DIBASIC ACID CARBOXYLATE HAVING THE GENERAL FORMULA
References Cited (Backward Citations)
GB810381A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-09-11 | 1971-03-13 | 1971-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-11 | 1975-03-13 | 1975-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-11 | 1979-03-13 | 1979-09-12 | $7700.00 | Window Closed / Lapsed |