Patent US3188380A successfully refreshed from Google Patents.
US4025316A
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Mannich base reaction products useful as liquid hydrocarbon additives
Assignee: ExxonMobil Technology and Engineering Co
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Filing: 1974-11-06
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Granted: 1977-05-24
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Expires: 1994-11-06
Abstract
Abstract Polymeric alkyl-hydroxy benzyl N-substituted amines having a high degree of ring formation are derived from the condensation reaction of C8-C40 aliphatic alkyl substituted hydroxy aromatic, an aldehyde and an amine, wherein the molar ratio of said aromatic to said amine is about 2 to one, with said aldehyde being present in a molar amount in excess of said aromatic. These novel amines are useful as a detergent and/or antioxidant additive for liquid hydrocarbons, e.g., in lubricating oils for gasoline engines that have a two stroke cycle.
Inventors
- 👤 William Harold Stover
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 22:32
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/16; C10L1/1616; C10L1/22; C10L1/221; C10M2203/00; C10M2203/10; C10M2203/102; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2209/00; C10M2209/10; C10M2209/103; C10M2209/104; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/065; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2219/00; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/04; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/255; C10N2040/26; F; F02; F02B; F02B1/00; F02B1/02; F02B1/04; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
132 words
A combined lubricant and fuel composition for the lubrication of a 2-stroke cycle gasoline engine which comprises a gasoline to which has been added a minor amount of petroleum lubricating oil containing an oil soluble Mannich base as a detergent-antiscuff additive, said Mannich base comprising the reaction product of: about two molar proportions of C 14 -C 24 mono alkyl phenol, about two to eight molar proportions of a formaldehyde, and about a molar proportion of a nitrogen containing material selected from the group consisting of ammonia, alkylene diamine, polyalkene polyamines, and hexamethylene tetramine, and wherein: said oil has been added in an amount of from about 1 to 5 parts and said Mannich base has added in an amount of from about 0.03 to 0.75 parts, per 100 parts of gasoline.
Claim 2
Dependent Claim
132 words
A combined lubricant and fuel composition for the lubrication of a 2-stroke cycle gasoline engine which comprises a gasoline to which has been added a minor amount of petroleum lubricating oil containing an oil soluble Mannich base as a detergent-antiscuff additive, said Mannich base comprising the reaction product of: about two molar proportions of C 14 -C 24 mono alkyl phenol, about two to eight molar proportions of a formaldehyde, and about a molar proportion of a nitrogen containing material selected from the group consisting of ammonia, alkylene diamine, polyalkene polyamines, and hexamethylene tetramine, and wherein: said oil has been added in an amount of from about 1 to 5 parts and said Mannich base has added in an amount of from about 0.03 to 0.75 parts, per 100 parts of gasoline.
Claim 3
Dependent Claim
19 words
A composition according to claim 1, wherein said alkyl group is a C 16 to C 20 alkyl group.
Claim 4
Dependent Claim
28 words
A composition according to claim 2, wherein said alkyl phenol is octadecylphenol, and three to seven molar proportions of formaldehyde is used per molar proportions of said material.
Claim 5
Dependent Claim
11 words
A composition according to claim 1, wherein said material is ammonia.
Claim 6
Dependent Claim
12 words
A composition according to claim 1, wherein said material is alkylene diamine.
Claim 7
Dependent Claim
12 words
A composition according to claim 1, wherein said material is polyalkene polyamine.
Claim 8
Dependent Claim
12 words
A composition according to claim 1, wherein said material is hexamethylene tetramine.
Claim 9
Dependent Claim
24 words
A method of operating a 2-stroke cycle gasoline engine which comprises running said engine on the combined lubricant and fuel composition of claim 1.
References Cited (Backward Citations)
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 |