US3723563A
Expired / Lapsed
US
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Disproportionation of olefins
Assignee: BP PLC
•
Filing: 1971-07-12
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Granted: 1973-03-27
•
Expires: 1991-07-12
Abstract
Abstract A catalyst for olefin disproportionation comprises a molybdenum or tungsten salt and a Group IVb organometallic compound. A preferred system is tungsten hexachloride and tetra-n-butyl tin.
Inventors
- 👤 C Bradshaw
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:40
CPC Classifications
B; B01; B01J; B01J31/00; B01J31/02; B01J31/12; B01J31/122; B01J31/26; B01J31/34; C; C07; C07C; C07C6/00; C07C6/02; C07C6/04; B01J2231/00; B01J2231/50; B01J2231/54; B01J2231/543; B01J27/00; B01J27/06; B01J27/08; B01J27/10; C07C2527/00; C07C2527/06; C07C2527/132; C07C2531/00; C07C2531/02; C07C2531/12; C07C2531/26; C07C2531/34; Y; Y10; Y10S; Y10S585/00; Y10S585/949; Y10S585/952
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
15 words
A process according to claim 1 wherein the feedstock comprises C3 8 straight chain alkenes.
Claim 2
Dependent Claim
19 words
A process according to claim 1 wherein the salt of molybdenum or tungsten is tungsten hexachloride or molybdenum pentachloride.
Claim 3
Dependent Claim
12 words
A process according to claim 1 wherein the organometallic compound is tin.
Claim 4
Dependent Claim
14 words
A process according to claim 4 wherein the compound of tin is tetra-n-butyl tin.
Claim 5
Dependent Claim
20 words
A process according to claim 1 wherein the reaction is effected at a temperature in the range -20*C to +50*C.
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) | 1976-03-26 | 1976-09-25 | 1977-03-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-03-26 | 1980-09-25 | 1981-03-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-03-26 | 1984-09-25 | 1985-03-27 | $7700.00 | Window Closed / Lapsed |