US3920567A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Novel oxazoline-alkyl acid phosphate adducts useful as ashless antiwear additives
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1974-12-27
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Granted: 1975-11-18
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Expires: 1994-12-27
Abstract
Abstract Ashless antiwear additives for lubricating oils are prepared by reacting a monoester or diester alkyl acid phosphate having 2 to 6 carbon atoms in its alkyl group with a hydroxyalkyl substituted oxazoline having an alkyl or alkene radical of 8 to 22 carbon atoms attached to the ring carbon atom between the nitrogen and oxygen atoms of the oxazoline ring and at least one hydroxyalkyl group having 1 to 4 carbon atoms attached to one of the other two ring carbon atoms. The additives show improved antiwear properties as compared to conventional ash producing antiwear additives.
Inventors
- 👤 Alfred H Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 11:58
CPC Classifications
C; C10; C10M; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/32; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/02; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2030/00; C10N2030/08; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/12; C10N2040/13
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
23 words
A COMPOSITION COMPRISING A LUBRICATING OIL AND A QUATERNARY SALT FORMED BY REACTING (A) AN ALKYL ACID PHOSPATE CHARACETERIZED BY THE GENERAL FORMULA:
Claim 2
Dependent Claim
23 words
A COMPOSITION COMPRISING A LUBRICATING OIL AND A QUATERNARY SALT FORMED BY REACTING (A) AN ALKYL ACID PHOSPATE CHARACETERIZED BY THE GENERAL FORMULA:
Claim 3
Dependent Claim
14 words
The composition of claim 1 wherein the oxazoline contains at least two hydroxyalkyl groups.
Claim 4
Dependent Claim
18 words
The composition of claim 1 wherein the oxazoline is a bis hydroxyalkyl substituted oxazoline having two hydroxyalkyl groups.
Claim 5
Dependent Claim
18 words
The composition of claim 3 wherein said two hydroxyalkyl groups are attached to the same ring carbon atom.
Claim 6
Dependent Claim
13 words
The composition of claim 4 wherein said two hydroxyalkyl groups are hydroxymethyl groups.
Claim 7
Dependent Claim
10 words
The composition of claim 5 wherein the oxazoline is 2-heptadecyl-4,4-di-hydroxymethyloxazoline.
Claim 8
Dependent Claim
13 words
The composition of claim 3 wherein the alkyl acid phosphate is di-n-butyl-acid phosphate.
Claim 9
Dependent Claim
13 words
The composition of claim 1 wherein the alkyl acid phosphate is di-n-butyl-acid phosphate.
Claim 10
Dependent Claim
10 words
The composition of claim 8 wherein the oxazoline is 2-heptadecyl-4-methyl-4-hydroxymethyloxazoline.
Claim 11
Dependent Claim
22 words
The composition of claim 1 containing 0.001 to 10 weight percent of said quaternary salt, based on the weight of lubricating oil.
Claim 12
Dependent Claim
34 words
A composition comprising a lubricating oil and 0.001 to 10 weight percent of a quaternary salt, based on the weight of lubricating oil, said quaternary salt being formed by reacting di-n-butyl-acid phosphate with 2-heptadecyl-4,4-di-hydroyxmethyloxazoline.
Claim 13
Dependent Claim
34 words
A composition comprising a lubricating oil and 0.001 to 10 weight percent of a quaternary salt, based on the weight of lubricating oil, said quaternary salt being formed by reacting di-n-butyl-acid phosphate with 2-heptadecyl-4,4-di-hydroyxmethyloxazoline.
References Cited (Backward Citations)
US3819647A
Cited
US3844957A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-11-17 | 1979-05-19 | 1979-11-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-11-17 | 1983-05-19 | 1983-11-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-11-17 | 1987-05-19 | 1987-11-18 | $7700.00 | Window Closed / Lapsed |