Patent US4601993A successfully refreshed from Google Patents.
US4601993A
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Catalyst composition dewaxing of lubricating oils
Assignee: Mobil Oil AS
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Filing: 1984-10-17
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Granted: 1986-07-22
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Expires: 2004-10-17
Abstract
Abstract Hydrocarbon lubricating oil feedstocks are dewaxed by passing the waxy feedstock over a catalyst bed containing a mixture of medium pore zeolite and large pore zeolite catalysts havig a Constraint Index less than 2 and having hydroisomerization activity in the presence of a hydrogenation component.
Inventors
- 👤 Pochen Chu
- 👤 Jeffrey H. Yen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 16:34
CPC Classifications
C; C10; C10G; C10G45/00; C10G45/58; C10G45/60; C10G45/64; B; B01; B01J; B01J29/00; B01J29/04; B01J29/06; B01J29/80
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
45 words
A composition having catalytic properties comprising, in combination, a crystalline silicate medium pore zeolite having a Constraint Index between 2 and 12, Zeolite Beta and a hydrogenation component, wherein the ratio of said Zeolite Beta to said medium pore zeolite is not greater than 1.
Claim 2
Dependent Claim
45 words
A composition having catalytic properties comprising, in combination, a crystalline silicate medium pore zeolite having a Constraint Index between 2 and 12, Zeolite Beta and a hydrogenation component, wherein the ratio of said Zeolite Beta to said medium pore zeolite is not greater than 1.
Claim 3
Dependent Claim
28 words
The composition of claim 1, wherein said hydrogenation component is a metal selected from any of Groups VI, VII and VIII of the Periodic Table and mixtures thereof.
Claim 4
Dependent Claim
11 words
The composition of claim 1, wherein said hydrogenation component comprises platinum.
Claim 5
Dependent Claim
11 words
The composition of claim 1, wherein said hydrogenation component comprises nickel.
Claim 6
Dependent Claim
9 words
The composition of claim 1, further comprising a binder.
Claim 7
Dependent Claim
36 words
The composition of claim 1, wherein said medium pore zeolite is present in an amount from 5 to 60 wt. % and said Zeolite Beta is present in an amount from 5 to 60 wt. %.
Claim 8
Dependent Claim
19 words
The composition of claim 5, wherein said binder is present in an amount not greater than 50 wt. %.
Claim 9
Dependent Claim
39 words
The composition of claim 5, wherein said medium pore zeolite is present in an amount of 55 wt. %, said Zeolite Beta in an amount of 10 wt. %, and said binder in an amount of 35 wt. %.
Claim 10
Dependent Claim
25 words
The composition of claim 5, wherein said binder is selected from the group consisting of alpha alumina monohydrate silica, silica-alumina, naturally-occurring clays and mixtures thereof.
Claim 11
Dependent Claim
68 words
A process for preparing a lube stock dewaxing catalyst, said process comprising: (a) combining together from about 5 to 60 wt % medium pore zeolite, from about 5 to 60 wt % Zeolite Beta, from 0 to about 50 wt % binder and a sufficient amount of water into a mixture; (b) extruding said mixture; (c) drying said mixture; and (d) incorporating a hydrogenation component into said mixture.
Claim 12
Dependent Claim
68 words
A process for preparing a lube stock dewaxing catalyst, said process comprising: (a) combining together from about 5 to 60 wt % medium pore zeolite, from about 5 to 60 wt % Zeolite Beta, from 0 to about 50 wt % binder and a sufficient amount of water into a mixture; (b) extruding said mixture; (c) drying said mixture; and (d) incorporating a hydrogenation component into said mixture.
Claim 13
Dependent Claim
11 words
The process according to claim 10, further comprising calcining said mixture.
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| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
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| 3.5 Years (Year 4) | 1989-07-21 | 1990-01-20 | 1990-07-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1993-07-21 | 1994-01-20 | 1994-07-22 | $3760.00 | Window Closed / Lapsed |
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