US4014945A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the preparation of ethylene glycol
Assignee: Standard Oil Co
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Filing: 1975-08-28
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Granted: 1977-03-29
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Expires: 1995-08-28
Abstract
Abstract The present disclosure relates to the catalytic hydration of alkylene oxides, in particular ethylene oxide for the production of glycols using a catalyst comprising a copper promoted aluminum phosphate. In certain instances the isomerization activity of the catalyst can be reduced by the incorporation of small quantities of alkali or alkaline earth metals as inhibitors for such process.
Inventors
- 👤 Wilford J. Zimmerschied
- 👤 David A. Palmer
- 👤 Ralph J. Bertolacini
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 17:38
CPC Classifications
B; B01; B01J; B01J27/00; B01J27/14; B01J27/16; B01J27/18; B01J27/1802; B01J27/1817; B01J23/00; B01J23/70; B01J23/72; C; C07; C07C; C07C29/00; C07C29/09; C07C29/10; C07C29/103; C07C29/106; Y; Y02; Y02P; Y02P20/00; Y02P20/50; Y02P20/52
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
65 words
A process for production of ethylene glycol which comprises contacting at reaction conditions a mixture of ethylene oxide and water with a catalyst essentially consisting of aluminum phosphate and containing from about 0.05 to about 10 percent by weight of copper based on aluminum phosphate which catalyst has been calcined at a temperature of less than 900° F. to effect the production of said glycol.
Claim 2
Dependent Claim
65 words
A process for production of ethylene glycol which comprises contacting at reaction conditions a mixture of ethylene oxide and water with a catalyst essentially consisting of aluminum phosphate and containing from about 0.05 to about 10 percent by weight of copper based on aluminum phosphate which catalyst has been calcined at a temperature of less than 900° F. to effect the production of said glycol.
Claim 3
Dependent Claim
23 words
The process of claim 1 further characterized in that said catalyst contains from about 0.1 to about 3 percent by weight of copper.
Claim 4
Dependent Claim
26 words
The process of claim 1 further characterized in that said reaction conditions include a temperature within the range of from about 300° to about 600° F.
Claim 5
Dependent Claim
18 words
Claim 3 in that said temperature is within the range of from about 400° to about 550° F.
Claim 6
Dependent Claim
26 words
The process of claim 1 further characterized in that said reaction conditions include a pressure within the range of from about 50 to about 300 p.s.i.g.
Claim 7
Dependent Claim
28 words
The process of claim 1 further characterized in that said reaction conditions include a molar ratio of water to ethylene oxide of from about 2 to about 50.
Claim 8
Dependent Claim
14 words
Claim 6 in that said molar ratio is from about 6 to about 20.
Claim 9
Dependent Claim
36 words
The process of claim 1 further characterized in that said catalyst contains less than about 1 percent by weight of a metal selected from the group consisting of alkaline earth metal, alkali metal or mixtures thereof.
Claim 10
Dependent Claim
30 words
The process of claim 1 further characterized in that said catalyst is produced by a process in which it is calcined at a temperature of less than about 600° F.
Claim 11
Dependent Claim
100 words
A process for the production of ethylene glycol which comprises contacting at reaction conditions including a molar ratio of water to ethylene oxide of from about 6 to about 20, a temperature of from about 400° to about 550° F. and a pressure of from about 50 to about 300 psig, a mixture of water and ethylene oxide with a catalyst essentially consisting of an aluminum phosphate catalyst containing from about 0.1 to about 3 percent by weight of copper which catalyst has been calcined at a temperature of less than 900° F. to effect the production of ethylene glycol.
Claim 12
Dependent Claim
100 words
A process for the production of ethylene glycol which comprises contacting at reaction conditions including a molar ratio of water to ethylene oxide of from about 6 to about 20, a temperature of from about 400° to about 550° F. and a pressure of from about 50 to about 300 psig, a mixture of water and ethylene oxide with a catalyst essentially consisting of an aluminum phosphate catalyst containing from about 0.1 to about 3 percent by weight of copper which catalyst has been calcined at a temperature of less than 900° F. to effect the production of ethylene glycol.
Claim 13
Dependent Claim
98 words
A process for production of ethylene glycol which comprises contacting, at reaction conditions including a molar ratio of water to ethylene oxide of from about 6 to about 20, a temperature of from about 400° to about 550° F. and a pressure of from about 50 to about 300 psig, a mixture of water and ethylene oxide with a catalyst consisting essentially of an aluminum phosphate containing from about 0.1 to about 3 percent by weight of copper which catalyst has been contacted by being calcined at less than 900° F. to effect the production of ethylene glycol.
Claim 14
Dependent Claim
98 words
A process for production of ethylene glycol which comprises contacting, at reaction conditions including a molar ratio of water to ethylene oxide of from about 6 to about 20, a temperature of from about 400° to about 550° F. and a pressure of from about 50 to about 300 psig, a mixture of water and ethylene oxide with a catalyst consisting essentially of an aluminum phosphate containing from about 0.1 to about 3 percent by weight of copper which catalyst has been contacted by being calcined at less than 900° F. to effect the production of ethylene glycol.
Claim 15
Dependent Claim
38 words
The process of claim 11 further characterized in that said catalyst contains less than about 1 percent by weight of a metal selected from the group consisting of alkaline earth metal, alkaline metal, or mixtures or oxides 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) | 1980-03-28 | 1980-09-27 | 1981-03-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-03-28 | 1984-09-27 | 1985-03-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-03-28 | 1988-09-27 | 1989-03-29 | $7700.00 | Window Closed / Lapsed |