US4025451A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sulfurized mannich bases as lubricating oil dispersant
Assignee: Ethyl Corp
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Filing: 1975-06-06
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Granted: 1977-05-24
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Expires: 1995-06-06
Abstract
Abstract Dispersancy, wear and corrosion properties of lubricating oil are improved by addition of a product made by mixing at about 50°-300° C about 1-20 parts of sulfur with about 100 parts of the condensation product made by reacting a high molecular weight alkylphenol, formaldehyde and a reactive amine. Excess sulfur is preferably removed.
Inventors
- 👤 Larry Plonsker
- 👤 Robert E. Malec
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 06:20
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C08; C08F; C08F8/00; C08F8/30; C08F8/34; C10M1/00; C10M1/08; C10M2205/00; C10M2205/02; C10M2205/026; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/02; C10M2209/08; C10M2209/084; C10M2215/00; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/30; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/04; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
122 words
Mineral lubricating oil containing a dispersant amount of a product made by the process comprising heating to a temperature of about 50°-300° C. a mixture of (1) from about 1-20 parts by weight of elemental sulfur and (2) about 100 parts by weight of a condensation product made by reacting about (a) one mole part of a high molecular weight alkylphenol wherein said alkyl has a molecular weight of from about 600-3000, (b) about 0.1-10 mole parts of an amine containing from 1 to about 20 carbon atoms and having at least one > NH group capable of entering into a Mannich condensation reaction, and (c) about 0.1-10 mole parts of an aliphatic aldehyde containing from 1 to about 6 carbon atoms.
Claim 2
Dependent Claim
122 words
Mineral lubricating oil containing a dispersant amount of a product made by the process comprising heating to a temperature of about 50°-300° C. a mixture of (1) from about 1-20 parts by weight of elemental sulfur and (2) about 100 parts by weight of a condensation product made by reacting about (a) one mole part of a high molecular weight alkylphenol wherein said alkyl has a molecular weight of from about 600-3000, (b) about 0.1-10 mole parts of an amine containing from 1 to about 20 carbon atoms and having at least one > NH group capable of entering into a Mannich condensation reaction, and (c) about 0.1-10 mole parts of an aliphatic aldehyde containing from 1 to about 6 carbon atoms.
Claim 3
Dependent Claim
17 words
A composition of claim 1 wherein said alkylphenol is a polyolefin-substituted phenol and said aldehyde is formaldehyde.
Claim 4
Dependent Claim
13 words
A composition of claim 2 wherein said polyolefinsubstituted phenol is a polypropylene-substituted phenol.
Claim 5
Dependent Claim
13 words
A composition of claim 2 wherein said polyolefinsubstituted phenol is a polybutene-substituted phenol.
Claim 6
Dependent Claim
36 words
A composition of claim 2 wherein said amine is a polyethylene polyamine having the formula: H.sub.2 N -- CH.sub.2 --CH.sub.2 NH --.sub.x H wherein x is an integer from 1 to about 6 and mixtures thereof.
Claim 7
Dependent Claim
13 words
A composition of claim 5 wherein said polyolefinsubstituted phenol is a polypropylene-substituted phenol.
Claim 8
Dependent Claim
13 words
A composition of claim 5 wherein said polyolefinsubstituted phenol is a polybutene-substituted phenol.
Claim 9
Dependent Claim
11 words
A composition of claim 2 wherein said amine is an N,N-dialkyl-alkanediamine.
Claim 10
Dependent Claim
13 words
A composition of claim 8 wherein said polyolefinsubstituted phenol is a polybutene-substituted phenol.
Claim 11
Dependent Claim
10 words
A composition of claim 9 wherein said alkanediamine is N,N-dimethyl-1,3-propanediamine.
Claim 12
Dependent Claim
17 words
A composition of claim 10 wherein said polybutene substituent has an average molecular weight of about 750-1500.
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) | 1980-05-23 | 1980-11-22 | 1981-05-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-05-23 | 1984-11-22 | 1985-05-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-05-23 | 1988-11-22 | 1989-05-24 | $7700.00 | Window Closed / Lapsed |