US3113125A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Preparation of synthetic polyesters using borane catalysts
Assignee: Callery Chemical Co
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Filing: 1959-12-21
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Granted: 1963-12-03
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Expires: 1979-12-21
Abstract
No abstract record available.
Inventors
- 👤 Grantham Raymond Jack
- 👤 James W Shepherd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:30
CPC Classifications
C; C08; C08G; C08G63/00; C08G63/78; C08G63/82; C08G63/84
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
110 words
IN A PROCESS FOR PRODUCING POLYMERIC POLYESTERS BY HEATING AND REACTING A POLYHYDRIC ALCOHOL WITH A DIESTER OF A DIBASIC CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND AROMATIC DIBASIC CARBOXYLIC ACID AND A MONOHYDRIC ALCOHOL CONTAINING BETWEEN 1 AND 10 CARBON ATOMS, THE IMPROVEMENT WHICH COMPRISES HEATING SAID REACTANTS IN THE PRESENCE OF AT LEAST ABOUT 0.01% BASED ON THE WEIGHT OF SAID DIESTER OF A CATALYST SELECTED FROM THE CLASS CONSISTING OF ALKYL AMINE BORANES, POLYFUNCTIONAL ALIPHATIC AMINE BORANES, AROMATIC AMINE BORANES, ALIHETEROCYCLIC AMINE BORANES, AROMATIC AMINE BORANES, ALIPHATIC-AROMATIC AMINE BORANES, ALKYL SUBSTITUTED PHOSPHINE BORANES, AROMATIC SUBSTITUTED PHOSPHINE BORANES, ALKYL-ARYL SUBSTITUTED PHOSPHINE BORANES AND MIXTURES THEREOF.
Claim 2
Dependent Claim
110 words
IN A PROCESS FOR PRODUCING POLYMERIC POLYESTERS BY HEATING AND REACTING A POLYHYDRIC ALCOHOL WITH A DIESTER OF A DIBASIC CARBOXYLIC ACID SELECTED FROM THE GROUP CONSISTING OF ALIPHATIC AND AROMATIC DIBASIC CARBOXYLIC ACID AND A MONOHYDRIC ALCOHOL CONTAINING BETWEEN 1 AND 10 CARBON ATOMS, THE IMPROVEMENT WHICH COMPRISES HEATING SAID REACTANTS IN THE PRESENCE OF AT LEAST ABOUT 0.01% BASED ON THE WEIGHT OF SAID DIESTER OF A CATALYST SELECTED FROM THE CLASS CONSISTING OF ALKYL AMINE BORANES, POLYFUNCTIONAL ALIPHATIC AMINE BORANES, AROMATIC AMINE BORANES, ALIHETEROCYCLIC AMINE BORANES, AROMATIC AMINE BORANES, ALIPHATIC-AROMATIC AMINE BORANES, ALKYL SUBSTITUTED PHOSPHINE BORANES, AROMATIC SUBSTITUTED PHOSPHINE BORANES, ALKYL-ARYL SUBSTITUTED PHOSPHINE BORANES AND MIXTURES THEREOF.
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) | 1966-12-02 | 1967-06-03 | 1967-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-12-02 | 1971-06-03 | 1971-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-12-02 | 1975-06-03 | 1975-12-03 | $7700.00 | Window Closed / Lapsed |