US4022590A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Low pour waxy residual fuel oils
Assignee: Texaco Inc
•
Filing: 1975-02-05
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Granted: 1977-05-10
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Expires: 1995-02-05
Abstract
Abstract The pour points of residual fuel oil compositions are decreased substantially by incorporating with a waxy residual fuel oil a minor amount of a low molecular weight highly-branched polymer of normal alpha-olefin having from 10 to 16 carbon atoms. The low molecular weight polymers being oil-soluble liquids can be conveniently blended with the residual fuel oil.
Inventors
- 👤 Abraham Morduchowitz
- 👤 Jerzy Jozef Bialy
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 10:04
CPC Classifications
C; C09; C09K; C09K3/00; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1641; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
58 words
A low-pour, waxy, residual fuel oil composition comprising a blend of a major amount of a waxy residual fuel oil and about 0.030 to about 0.50 weight percent of a liquid polymer of a normal alpha-olefin having from about 10 to about 16 carbon atoms and having a number average molecular weight of about 500 to about 5,000.
Claim 2
Dependent Claim
58 words
A low-pour, waxy, residual fuel oil composition comprising a blend of a major amount of a waxy residual fuel oil and about 0.030 to about 0.50 weight percent of a liquid polymer of a normal alpha-olefin having from about 10 to about 16 carbon atoms and having a number average molecular weight of about 500 to about 5,000.
Claim 3
Dependent Claim
76 words
The composition of claim 1 wherein the said waxy residual fuel has an API gravity of from 10.0 to about 30.0, a sulfur content of between about 0.10 to about 0.96 weight percent; a SUS viscosity at 122° F of about 150 to about 2000; a pour point of between about 80 and 110° F; a flash point of between about 300° and 450° F and a wax content of between about 5 and 20 percent.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein the minor amount is from about 0.030 to about 0.50 weight percent.
Claim 5
Dependent Claim
21 words
The composition of claim 1 wherein the said normal alpha-olefin is a mixture of C 11 - C 14 normal alpha-olefins.
Claim 6
Dependent Claim
82 words
In the transportation of waxy residual fuel oils the improvement which comprises introducing into the said pipeline a low-pour, waxy, residual fuel oil composition comprising a blend of a major amount of a waxy residual fuel oil and a minor amount effective to substantially lower the pour point of the said residual fuel of a liquid polymer of normal alpha-olefins having from about 10 to about 16 carbon atoms and having a number average molecular weight of about 500 to about 5000.
Claim 7
Dependent Claim
82 words
In the transportation of waxy residual fuel oils the improvement which comprises introducing into the said pipeline a low-pour, waxy, residual fuel oil composition comprising a blend of a major amount of a waxy residual fuel oil and a minor amount effective to substantially lower the pour point of the said residual fuel of a liquid polymer of normal alpha-olefins having from about 10 to about 16 carbon atoms and having a number average molecular weight of about 500 to about 5000.
Claim 8
Dependent Claim
75 words
The method of claim 5 wherein the said waxy residual fuel has an API gravity of from 10 to about 30; a sulfur content of between about 0.10 to about 0.96 weight percent; a SUS viscosity at 122° F of about 150 to about 2,000; a pour point of between about 80 and 110; a flash point of between about 300° and 450° F and a wax content of between about 5 and 20 percent.
Claim 9
Dependent Claim
18 words
The composition of claim 5 wherein the minor amount is from about 0.030 to about 0.50 weight percent.
Claim 10
Dependent Claim
21 words
The composition of claim 5 wherein the said normal alpha-olefin is a mixture of C 11 - C 14 normal alpha-olefins.
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) | 1980-05-09 | 1980-11-08 | 1981-05-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-09 | 1984-11-08 | 1985-05-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-09 | 1988-11-08 | 1989-05-10 | $7700.00 | Window Closed / Lapsed |