US4157346A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Catalytic epoxidation of alkylene compounds
Assignee: Olin Corp
•
Filing: 1978-03-30
•
Granted: 1979-06-05
•
Expires: 1998-03-30
Abstract
Abstract An epoxidation method is described wherein an alkylene compound is reacted with a peroxidic compound, e.g., H2O2, in the presence of an improved molybdenum catalyst which is prepared by a selective reaction involving an oxygen-containing molybdenum compound, an amine, and an alkylene glycol.
Inventors
- 👤 Ellwood L. Lines
- 👤 Robert J. Fairbrother
- 👤 John A. Herbst
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 18:12
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/0234; B01J31/0235; B01J31/0237; B01J23/00; B01J23/16; B01J23/24; B01J23/28; B01J31/0201; B01J31/0202; B01J31/26; B01J31/34; C; C07; C07D; C07D301/00; C07D301/02; C07D301/03; C07D301/12; B01J2231/00; B01J2231/70; B01J2231/72
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
167 words
A method for preparing an alkylene oxide which comprises reacting an alkylene compound with hydrogen peroxide in the presence of a molybdenum compound catalyst at a reaction temperature ranging from about 20° C. to about 60° C., wherein said catalyst is a preformulated compound prepared by reacting together, at a temperature of about 70°-160° C., (a) an oxygen-containing molybdenum compound selected from the group consisting of molybdenum dioxide, molybdenum sesquioxide, molybdenum trioxide, mixtures of said oxides, and the ammonium salt of molybdic acid, and, per every mole of molybdenum, (b) about 1.5-20 moles of an alkylene glycol having 2-10 carbon atoms and (c) about 0.1-4 moles of an amine or N-oxide thereof, said amine being represented by the formula R 1 R 2 R 3 N in which each of R 1 , R 2 , and R 3 is independently hydrogen or alkyl of 1-10 carbon atoms with the proviso that at least one of R 1 , R 2 and R 3 is not hydrogen.
Claim 2
Independent Claim
167 words
A method for preparing an alkylene oxide which comprises reacting an alkylene compound with hydrogen peroxide in the presence of a molybdenum compound catalyst at a reaction temperature ranging from about 20° C. to about 60° C., wherein said catalyst is a preformulated compound prepared by reacting together, at a temperature of about 70°-160° C., (a) an oxygen-containing molybdenum compound selected from the group consisting of molybdenum dioxide, molybdenum sesquioxide, molybdenum trioxide, mixtures of said oxides, and the ammonium salt of molybdic acid, and, per every mole of molybdenum, (b) about 1.5-20 moles of an alkylene glycol having 2-10 carbon atoms and (c) about 0.1-4 moles of an amine or N-oxide thereof, said amine being represented by the formula R 1 R 2 R 3 N in which each of R 1 , R 2 , and R 3 is independently hydrogen or alkyl of 1-10 carbon atoms with the proviso that at least one of R 1 , R 2 and R 3 is not hydrogen.
Claim 3
Dependent Claim
11 words
The method of claim 1 wherein said alkylene compound is propylene.
Claim 4
Dependent Claim
23 words
The method of claim 1 wherein each of said R 1 , R 2 and R 3 is alkyl of 1-4 carbon atoms.
Claim 5
Dependent Claim
27 words
The method of claim 3 wherein said oxygen-containing molybdenum compound is selected from the group consisting of molybdenum dioxide, molybdenum sesquioxide, molybdenum trioxide, and a mixture thereof.
Claim 6
Dependent Claim
30 words
The method of claim 4 wherein about 1.8-3 moles of said alkylene glycol and about 0.5-2 moles of said amine or its N-oxide are employed per every mole of molybdenum.
Claim 7
Dependent Claim
13 words
The method of claim 5 wherein said alkylene glycol contains 2-4 carbon atoms.
Claim 8
Dependent Claim
13 words
The method of claim 6 wherein said oxygen-containing molybdenum compound is molybdenum trioxide.
Claim 9
Dependent Claim
11 words
The method of claim 7 wherein said alkylene compound is propylene.
Claim 10
Dependent Claim
10 words
The method of claim 8 wherein said amine is triethylamine.
Claim 11
Dependent Claim
25 words
The method of claim 9 wherein the reaction of said molybdenum trioxide, triethylamine and alkylene glycol is effected at a temperature of about 80°-150° C.
References Cited (Backward Citations)
US3122569A
Cited
US3489775A
Cited
US3778451A
Cited
US3597459A
Cited
US3668227A
Cited
US3956180A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1982-06-04 | 1982-12-04 | 1983-06-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-06-04 | 1986-12-04 | 1987-06-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-06-04 | 1990-12-04 | 1991-06-05 | $7700.00 | Window Closed / Lapsed |