US3946079A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of condensing ketones
Assignee: Tokuyama Corp
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Filing: 1971-01-07
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Granted: 1976-03-23
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Expires: 1991-01-07
Abstract
Abstract A process of producing ketone condensation products which comprises condensing at a temperature of from 60° to 300°C. a ketone having 3-19 carbon atoms in the presence of, as a catalyst, at least one metal phosphate selected from titanium phosphate, zirconium phosphate, hafnium phosphate, and tin phosphate; dimeric condensation or trimeric condensation can be achieved depending upon the reaction conditions.
Inventors
- 👤 Yukio Mizutani
- 👤 Yusuke Izumi
- 👤 Yoshiaki Watanabe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 11:05
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1813; C; C07; C07C; C07C45/00; C07C45/61; C07C45/67; C07C45/68; C07C45/72; C07C45/74; C07C49/00; C07C49/20; C07C49/203
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
99 words
A process of producing unsaturated ketone condensation products which comprises condensing at a temperature of from 60° to 300°C., a ketone of 3-19 carbon atoms having the following formula ##EQU5## wherein R 1 is either alkyl, cycloalkyl, aryl, aralkyl, alkaryl or alkenyl, and R 2 and R 3 , which may be the same or different are each hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkaryl or alkenyl, said process being carried out in the presence of a catalyst consisting of at least one metal phosphate selected from the group consisting of titanium phosphate, zirconium phosphate, hafnium phosphate, and tin phosphate.
Claim 2
Dependent Claim
99 words
A process of producing unsaturated ketone condensation products which comprises condensing at a temperature of from 60° to 300°C., a ketone of 3-19 carbon atoms having the following formula ##EQU5## wherein R 1 is either alkyl, cycloalkyl, aryl, aralkyl, alkaryl or alkenyl, and R 2 and R 3 , which may be the same or different are each hydrogen, alkyl, cycloalkyl, aryl, aralkyl, alkaryl or alkenyl, said process being carried out in the presence of a catalyst consisting of at least one metal phosphate selected from the group consisting of titanium phosphate, zirconium phosphate, hafnium phosphate, and tin phosphate.
Claim 3
Dependent Claim
25 words
The method of claim 1 wherein dimeric condensation products are selectively formed by carrying out the condensation reaction at a temperature of 60° to 160°C.
Claim 4
Dependent Claim
22 words
The method of claim 1 wherein dimeric condensation products are selectively produced by carrying out the condensation reaction in the liquid phase.
Claim 5
Dependent Claim
24 words
The method of claim 1 wherein said ketone is selected from the group consisting of acetone, diethylketone, methyl ethyl ketone, methylisobutylketone, 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) | 1979-03-23 | 1979-09-22 | 1980-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-03-23 | 1983-09-22 | 1984-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-03-23 | 1987-09-22 | 1988-03-23 | $7700.00 | Window Closed / Lapsed |