US4113634A
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US
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Metal aryl dithiophosphates and their manufacture
Assignee: Ethyl Corp
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Filing: 1977-03-01
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Granted: 1978-09-12
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Expires: 1997-03-01
Abstract
Abstract Disclosed are a process for manufacturing metal diaryl dithiophosphates, certain metal diaryl dithiophosphates, and lubricating oil compositions containing said metal diaryl dithiophosphates. The process for the manufacture of metal diaryl dithiophosphate generally comprises reacting P 2 S 5 with a hydroxyl aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of an effective amount of a promoter, said promoter comprising dialkyl dithiophosphoric acid. Metal diaryl dithiophosphates, especially for use in lubricating oil compositions, can be made by the above process.
Inventors
- 👤 Albert R. Sabol
- 👤 Nicolas C. Petrellis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 06:04
CPC Classifications
C; C07; C07F; C07F9/00; C07F9/02; C07F9/06; C07F9/16; C07F9/165; C07F9/18; C10; C10M; C10M137/00; C10M137/02; C10M137/04; C10M137/10; C10M2207/00; C10M2207/28; C10M2207/282; C10M2207/34; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10N; C10N2010/00; C10N2010/04; C10N2010/14; C10N2010/16
Claims Analysis
Total Claims: 37
Claim 1
Independent Claim
55 words
A process for the manufacture of metal diaryl dithiophosphate which comprises: reacting P 2 S 5 with a hydroxyl aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of an effective amount of a promoter, said promoter comprising dialkyl dithiophosphoric acid.
Claim 2
Dependent Claim
55 words
A process for the manufacture of metal diaryl dithiophosphate which comprises: reacting P 2 S 5 with a hydroxyl aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of an effective amount of a promoter, said promoter comprising dialkyl dithiophosphoric acid.
Claim 3
Dependent Claim
26 words
The process of claim 1 wherein the promoter is present at a concentration of about 0.01 to about 1.0 moles per mole of aryl dithiophosphoric acid.
Claim 4
Dependent Claim
26 words
The process of claim 1 wherein the promoter is present at a concentration of about 0.11 to about 0.22 moles per mole of aryl dithiophosphoric acid.
Claim 5
Dependent Claim
15 words
The process of claim 1 wherein the dithiophosphoric acid is neutralized with a zinc base.
Claim 6
Dependent Claim
15 words
The process of claim 4 wherein the zinc base comprises zinc oxide or zinc hydroxide.
Claim 7
Dependent Claim
17 words
The process of claim 4 wherein the promoter comprises a C 3 to C 8 dialkyl dithiophosphate.
Claim 8
Dependent Claim
16 words
The process of claim 1 wherein said hydroxy aryl compound comprises a hydroxy substituted benzene ring.
Claim 9
Dependent Claim
20 words
The process of claim 7 wherein said benzene ring is substituted with a C 1 to C 100 hydrocarbyl group.
Claim 10
Dependent Claim
52 words
The process of claim 1 wherein the reaction of P 2 S 5 with the hydroxy aryl compound is conducted at a temperature of from about 100° to about 250° F and the neutralization of said aryl dithiophosphoric acid is conducted at a temperature of from about 100° to about 400° F.
Claim 11
Dependent Claim
88 words
A process for the manufacture of zinc diaryl dithiophosphate which comprises: reacting P 2 S 5 with a hydroxy substituted benzene compound to form a diaryldithiophosphoric acid at a temperature from about 100° to about 250° F; and neutralizing said diaryldithiophosphoric acid with zinc oxide or zinc hydroxide in the presence of about 0.11 to about 0.22 moles of a promoter per mole of aryl dithiophosphoric acid at a temperature from about 100° to about 400° F, said promoter comprising C 3 to C 8 dialkyl dithiophosphoric acid.
Claim 12
Dependent Claim
88 words
A process for the manufacture of zinc diaryl dithiophosphate which comprises: reacting P 2 S 5 with a hydroxy substituted benzene compound to form a diaryldithiophosphoric acid at a temperature from about 100° to about 250° F; and neutralizing said diaryldithiophosphoric acid with zinc oxide or zinc hydroxide in the presence of about 0.11 to about 0.22 moles of a promoter per mole of aryl dithiophosphoric acid at a temperature from about 100° to about 400° F, said promoter comprising C 3 to C 8 dialkyl dithiophosphoric acid.
Claim 13
Dependent Claim
53 words
A metal diaryl dithiophosphate made by a process which comprises: reacting P 2 S 5 with a hydroxy aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of small amounts of a promoter, said promoter comprising dialkyl dithiophosphoric acid.
Claim 14
Dependent Claim
53 words
A metal diaryl dithiophosphate made by a process which comprises: reacting P 2 S 5 with a hydroxy aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of small amounts of a promoter, said promoter comprising dialkyl dithiophosphoric acid.
Claim 15
Dependent Claim
27 words
The diaryl dithiophosphate of claim 11 wherein the promoter is present at a concentration of about 0.01 to about 1.0 moles per mole of aryl dithiophoshoric acid.
Claim 16
Dependent Claim
27 words
The diaryl dithiophosphate of claim 11 wherein the promoter is present at a concentration of about 0.11 to about 0.22 moles per mole of aryl dithiophosphoric acid.
Claim 17
Dependent Claim
16 words
The diaryl dithiophosphate of claim 11 wherein the dithiophosphoric acid is neutralized with a zinc base.
Claim 18
Dependent Claim
16 words
The diaryl dithiophosphate of claim 14 wherein the zinc base comprises zinc oxide or zinc hydroxide.
Claim 19
Dependent Claim
18 words
The diaryl dithiophosphate of claim 14 wherein the promoter comprises a C 3 to C 8 dialkyl dithiophosphate.
Claim 20
Dependent Claim
17 words
The diaryl dithiophosphate of claim 11 wherein said hydroxy aryl compound comprises a hydroxy substituted benzene ring.
Claim 21
Dependent Claim
21 words
The diaryl dithiophosphate of claim 17 wherein said benzene ring is substituted with a C 1 to C 100 hydrocarbyl group.
Claim 22
Dependent Claim
53 words
The diaryl dithiophosphate of claim 11 wherein the reaction of P 2 S 5 with the hydroxy aryl compound is conducted at a temperature of from about 100° to about 250° F and the neutralization of said aryl dithiophosphoric acid is conducted at a temperature of from about 100° to about 400° F.
Claim 23
Dependent Claim
87 words
A zinc diaryl dithiophosphate made by a process which comprises: reacting P 2 S 5 with a hydroxy substituted benzene compound to form a diaryldithiophosphoric acid at a temperature from about 100° to about 250° F; and neutralizing said diaryldithiophoshoric acid with zinc oxide or zinc hydroxide in the presence of about 0.11 to about 0.22 moles of a promoter per mole of aryl dithiophosphoric acid at a temperature from about 100° to about 400° F, said promoter comprising C 3 to C 8 dialkyl dithiophosphoric acid.
Claim 24
Dependent Claim
87 words
A zinc diaryl dithiophosphate made by a process which comprises: reacting P 2 S 5 with a hydroxy substituted benzene compound to form a diaryldithiophosphoric acid at a temperature from about 100° to about 250° F; and neutralizing said diaryldithiophoshoric acid with zinc oxide or zinc hydroxide in the presence of about 0.11 to about 0.22 moles of a promoter per mole of aryl dithiophosphoric acid at a temperature from about 100° to about 400° F, said promoter comprising C 3 to C 8 dialkyl dithiophosphoric acid.
Claim 25
Dependent Claim
75 words
A lubricating oil composition comprising a major proportion of lubricating oil and about 0.05 to about 5 weight percent of a metal diaryl dithiophosphate, said diaryl dithiophosphate made by a process comprising: reacting P 2 S 5 with a hydroxy aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of small amounts of a promoter, said promoter comprising dialkyl dithiophosphoric acid.
Claim 26
Dependent Claim
75 words
A lubricating oil composition comprising a major proportion of lubricating oil and about 0.05 to about 5 weight percent of a metal diaryl dithiophosphate, said diaryl dithiophosphate made by a process comprising: reacting P 2 S 5 with a hydroxy aryl compound to form a dithiophosphoric acid; and neutralizing said dithiophosphoric acid with zinc, barium, cadmium, magnesium or nickel base in the presence of small amounts of a promoter, said promoter comprising dialkyl dithiophosphoric acid.
Claim 27
Dependent Claim
26 words
The composition of claim 21 wherein the promoter is present at a concentration of about 0.01 to about 1.0 moles per mole of aryl dithiophosphoric acid.
Claim 28
Dependent Claim
26 words
The composition of claim 21 wherein the promoter is present at a concentration of about 0.11 to about 0.22 moles per mole of aryl dithophosphoric acid.
Claim 29
Dependent Claim
15 words
The composition of claim 21 wherein the dithiophosphoric acid is neutralized with a zinc base.
Claim 30
Dependent Claim
15 words
The composition of claim 24 wherein the zinc base comprises zinc oxide or zinc hydroxide.
Claim 31
Dependent Claim
17 words
The composition of claim 24 wherein the promoter comprises a C 3 to C 8 dialkyl dithiophosphate.
Claim 32
Dependent Claim
16 words
The composition of claim 21 wherein said hydroxy aryl compound comprises a hydroxy substituted benzene ring.
Claim 33
Dependent Claim
20 words
The composition of claim 22 wherein said benzene ring is substituted with a C 1 to C 100 hydrocarbyl group.
Claim 34
Dependent Claim
52 words
The composition of claim 21 wherein the reaction of P 2 S 5 with the hydroxy aryl compound is conducted at a temperature of from about 100° to about 250° F and the neutralization of said aryl dithiophosphoric acid is conducted at a temperature of from about 100° to about 400° F.
Claim 35
Dependent Claim
109 words
A lubricating oil composition comprising a major proportion of lubricating oil and about 0.05 to about 5 weight percent of a zinc diaryl dithiophosphate, said diaryl dithiophosphate made by a process comprising: reacting P 2 S 5 with a hydroxy substituted benzene compound to form a diaryldithiophoshoric acid at a temperature from about 100° to about 250° F; and neutralizing said diaryldithiophosphoric acid with zinc oxide or zinc hydroxide in the presence of about 0.11 to about 0.22 moles of a promoter per mole of aryl dithiophosphoric acid at a temperature from about 100° to about 400° F, said promoter comprising C 3 to C 8 dialkyl dithiophosphoric acid.
Claim 36
Dependent Claim
109 words
A lubricating oil composition comprising a major proportion of lubricating oil and about 0.05 to about 5 weight percent of a zinc diaryl dithiophosphate, said diaryl dithiophosphate made by a process comprising: reacting P 2 S 5 with a hydroxy substituted benzene compound to form a diaryldithiophoshoric acid at a temperature from about 100° to about 250° F; and neutralizing said diaryldithiophosphoric acid with zinc oxide or zinc hydroxide in the presence of about 0.11 to about 0.22 moles of a promoter per mole of aryl dithiophosphoric acid at a temperature from about 100° to about 400° F, said promoter comprising C 3 to C 8 dialkyl dithiophosphoric acid.
Claim 37
Dependent Claim
30 words
The composition of claim 21 wherein the lubricating oil has a viscosity from about 40 Saybolt Universal Seconds at 100° F to about 200 Saybolt Universal Seconds at 210° F.
References Cited (Backward Citations)
US3086939A
Cited
US3290347A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |