US3077500A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aldol condensation reactions
Assignee: Celanese Corp
•
Filing: 1955-06-23
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Granted: 1963-02-12
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Expires: 1975-06-23
Abstract
No abstract record available.
Inventors
- 👤 Walter E Heinz
- 👤 Alexander F Maclean
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 11:34
CPC Classifications
C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/75; B; B01; B01J; B01J31/00; B01J31/02; B01J31/06; B01J31/08; C07C45/65; C07C45/66; C07C45/74; B01J2231/00; B01J2231/30; B01J2231/34; B01J2231/341; B01J2231/342; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/582
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
84 words
IN A PROCESS FOR CARRYING OUT AN ALDOL CONDENSATION OF ORGANIC REACTANT COMPRISING ANN ALDEHYDE AND A MEMBER OF THE GROUP CONSISTING OF ALDEHYDES AND KETONES, SAID REACTANTS BEING RECTIVE WITH EACH OTHER UNDER BASIC CONDITIONS TO PRODUCE AN ALDOL CONDENSATION PRODUCT THE IMPROVEMENT WHICH COMPRISES PASSING SAID REACTATS AND A TERTIARY AMINE CONTINUOUSLY OVER A BODY OF A BASIC ANION-EXCHANGE RESIN CONTAINING QUATERNARY AMMONIUM GROUPS AND RECOVERING THE RESULTING ALDOL CONDENSATION PRODUCT, SAID AMINE SERVING TO MAINTAIN THE CATALYTIC ACTIVITY OF SAID RESIN.
Claim 2
Dependent Claim
84 words
IN A PROCESS FOR CARRYING OUT AN ALDOL CONDENSATION OF ORGANIC REACTANT COMPRISING ANN ALDEHYDE AND A MEMBER OF THE GROUP CONSISTING OF ALDEHYDES AND KETONES, SAID REACTANTS BEING RECTIVE WITH EACH OTHER UNDER BASIC CONDITIONS TO PRODUCE AN ALDOL CONDENSATION PRODUCT THE IMPROVEMENT WHICH COMPRISES PASSING SAID REACTATS AND A TERTIARY AMINE CONTINUOUSLY OVER A BODY OF A BASIC ANION-EXCHANGE RESIN CONTAINING QUATERNARY AMMONIUM GROUPS AND RECOVERING THE RESULTING ALDOL CONDENSATION PRODUCT, SAID AMINE SERVING TO MAINTAIN THE CATALYTIC ACTIVITY OF SAID RESIN.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-02-11 | 1966-08-13 | 1967-02-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-02-11 | 1970-08-13 | 1971-02-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-02-11 | 1974-08-13 | 1975-02-12 | $7700.00 | Window Closed / Lapsed |