Patent US1073176A successfully refreshed from Google Patents.
Patent US4418203A successfully refreshed from Google Patents.
US4418203A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Process for the epoxidation of olefins
Assignee: Shell USA Inc
•
Filing: 1981-12-21
•
Granted: 1983-11-29
•
Expires: 2001-12-21
Abstract
Abstract A process for the epoxidation of olefins wherein an olefin is contacted with hydrogen peroxide in a fluorinated alcoholic solvent in which are dissolved a catalyst selected from a group consisting of molybdenum, tungsten and rhenium and an organo tin co-catalyst.
Inventors
- 👤 Leo Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:54
CPC Classifications
C; C07; C07D; C07D303/00; C07D303/02; C07D303/12; C07D303/18; C07D303/20; C07D303/22; C07D301/00; C07D301/02; C07D301/03; C07D301/12; C07D303/04
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
94 words
In the process for the production of epoxides by contacting a substituted or unsubstituted phenylallyl ether with hydrogen peroxide in an organic solvent in the presence of homogeneous transition metal catalyst selected from the group consisting of molybdenum, tungsten and rhenium and a homogeneous organo metallic co-catalyst selected from the group consisting of organo tin, organo arsenic, organo antimony and organo germanium, the improvement which comprises using as the organic solvent a fluorinated alcohol having the formula CF 3 (CF 2 ) n CH 2 OH where n ranges from 0 to about 10.
Claim 2
Dependent Claim
94 words
In the process for the production of epoxides by contacting a substituted or unsubstituted phenylallyl ether with hydrogen peroxide in an organic solvent in the presence of homogeneous transition metal catalyst selected from the group consisting of molybdenum, tungsten and rhenium and a homogeneous organo metallic co-catalyst selected from the group consisting of organo tin, organo arsenic, organo antimony and organo germanium, the improvement which comprises using as the organic solvent a fluorinated alcohol having the formula CF 3 (CF 2 ) n CH 2 OH where n ranges from 0 to about 10.
Claim 3
Dependent Claim
17 words
The process of claim 1 wherein the temperature ranges from about 50° C. to about 90° C.
Claim 4
Dependent Claim
12 words
The process of claim 1 wherein the organo metallic co-catalyst is tin.
Claim 5
Dependent Claim
12 words
The process of claim 1 wherein the ether is phenyl allyl ether.
Claim 6
Dependent Claim
14 words
The process of claim 1 wherein the ether is the diallyl ether of 2,2-bis(4-hydroxyphenyl)propane.
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) | 1986-11-28 | 1987-05-30 | 1987-11-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-11-28 | 1991-05-30 | 1991-11-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-11-28 | 1995-05-30 | 1995-11-29 | $7700.00 | Window Closed / Lapsed |