US4132663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mineral oil compositions having improved pour point containing alpha-olefin copolymers
Assignee: Chevron USA Inc
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Filing: 1977-04-11
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Granted: 1979-01-02
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Expires: 1997-04-11
Abstract
Abstract Compounded mineral oil compositions having improved pour point are obtained by the incorporation therein of a minor amount of an alpha-olefin copolymer of 1-hexene and 1-octadecene.
Inventors
- 👤 William J. Heilman
- 👤 Thomas J. Lynch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 07:47
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1625; C10L1/1633; C10L1/1641; C08; C08F; C08F210/00; C08F210/14; C10M; C10M143/00; C10M143/08; C08F110/00; C08F110/14; C10M2205/00
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
113 words
An oil composition of lowered pour point comprising a major amount of a mineral lubricating oil or a No. 2 fuel oil and from about 0.025 (M o /84) weight percent to about 0.4 (M o /84) weight percent of a linear alpha-olefin copolymer synthesized from 1-hexene and 1-octadecene and having the formula ##STR2## wherein m is 6 or 18 with between about 60 to about 95 percent of the pendant groups resulting from 1-hexene and the remainder resulting from 1-octadecene, and the average of n is between about 50 and about 5,000; and where M 0 is the average molecular weight of the 1-hexene and 1-octadecene that is incorporated into said copolymer.
Claim 2
Dependent Claim
113 words
An oil composition of lowered pour point comprising a major amount of a mineral lubricating oil or a No. 2 fuel oil and from about 0.025 (M o /84) weight percent to about 0.4 (M o /84) weight percent of a linear alpha-olefin copolymer synthesized from 1-hexene and 1-octadecene and having the formula ##STR2## wherein m is 6 or 18 with between about 60 to about 95 percent of the pendant groups resulting from 1-hexene and the remainder resulting from 1-octadecene, and the average of n is between about 50 and about 5,000; and where M 0 is the average molecular weight of the 1-hexene and 1-octadecene that is incorporated into said copolymer.
Claim 3
Dependent Claim
32 words
An oil composition of lowered pour point in accordance with claim 1 comprising from about 0.05 (M o /84) weight percent to about 0.2 (M o /84) weight percent of said copolymer.
Claim 4
Dependent Claim
36 words
An oil composition of lowered pour point in accordance with claim 1 with between about 75 and about 90 percent of the pendant groups of said formula resulting from 1-hexene and the remainder resulting from 1-octadecene.
Claim 5
Dependent Claim
21 words
An oil composition of lowered pour point in accordance with claim 1 in which the oil is a mineral lubricating oil.
Claim 6
Dependent Claim
21 words
An oil composition of lowered pour point in accordance with claim 1 in which the oil is No. 2 fuel oil.
Claim 7
Dependent Claim
24 words
An oil composition of lowered pour point in accordance with claim 1 in which said linear alpha-olefin copolymer is completely soluble at -25° F.
Claim 8
Dependent Claim
24 words
An oil composition of lowered pour point in accordance with claim 1 in which said linear alpha-olefin copolymer is completely soluble at -40° F.
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) | 1982-01-01 | 1982-07-03 | 1983-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-01-01 | 1986-07-03 | 1987-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-01-01 | 1990-07-03 | 1991-01-02 | $7700.00 | Window Closed / Lapsed |