Patent US4209453A successfully refreshed from Google Patents.
US4209453A
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Antimony tris(dihydrocarbyl phosphite) and preparation thereof
Assignee: Phillips Petroleum Co
•
Filing: 1978-07-25
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Granted: 1980-06-24
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Expires: 1998-07-25
Abstract
Abstract A cracking catalyst is treated with an antimony tris(dihydrocarbyl phosphite) to passivate contaminating metals whenever these metals have been deposited on the catalyst. Unused or used catalyst can be treated.
Inventors
- 👤 Brent J. Bertus
- 👤 Dwight L. McKay
- 👤 Harold W. Mark
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 06:22
CPC Classifications
C; C10; C10G; C10G11/00; C10G11/02; B; B01; B01J; B01J31/00; B01J31/16; B01J31/18; B01J31/1845; B01J31/185; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/08; C07F9/141; B01J2531/00; B01J2531/50; B01J2531/52; Y; Y10; Y10S; Y10S502/00; Y10S502/521
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
4 words
An antimony tris(dihydrocarbyl phosphite).
Claim 2
Dependent Claim
4 words
An antimony tris(dihydrocarbyl phosphite).
Claim 3
Dependent Claim
4 words
An antimony tris(diphenyl phosphite).
Claim 4
Dependent Claim
4 words
An antimony tris(diphenyl phosphite).
Claim 5
Dependent Claim
3 words
Antimony tris(diphenyl phosphite).
Claim 6
Dependent Claim
3 words
Antimony tris(diphenyl phosphite).
Claim 7
Dependent Claim
91 words
A process for the preparation of an antimony tris(dihydrocarbyl phosphite) which comprises contacting in a suitable solvent at least one alkali metal dihydrocarbyl phosphite with at least one antimony compound having the formula SbX 3 , where each X is selected from the group consisting of Cl, Br, I, --CN, --OCN, --SCN, and --OCOR', wherein each R' is selected from the group consisting of alkyl, cycloalkyl, and aryl, and combinations thereof such as alkaryl, aralkyl, the number of carbon atoms in R' being within the range of 1 to about 8.
Claim 8
Dependent Claim
91 words
A process for the preparation of an antimony tris(dihydrocarbyl phosphite) which comprises contacting in a suitable solvent at least one alkali metal dihydrocarbyl phosphite with at least one antimony compound having the formula SbX 3 , where each X is selected from the group consisting of Cl, Br, I, --CN, --OCN, --SCN, and --OCOR', wherein each R' is selected from the group consisting of alkyl, cycloalkyl, and aryl, and combinations thereof such as alkaryl, aralkyl, the number of carbon atoms in R' being within the range of 1 to about 8.
Claim 9
Dependent Claim
16 words
A process according to claim 4 wherein the antimony compound produced is is antimony tris(diphenyl phosphite).
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-06-24 | 1983-12-24 | 1984-06-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-06-24 | 1987-12-24 | 1988-06-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-06-24 | 1991-12-24 | 1992-06-24 | $7700.00 | Window Closed / Lapsed |