Patent US4178259A successfully refreshed from Google Patents.
US4178259A
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Dispersant Mannich base compositions
Assignee: Chevron USA Inc
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Filing: 1978-05-01
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Granted: 1979-12-11
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Expires: 1998-05-01
Abstract
Abstract New Mannich bases and their alkaline earth metal salts are prepared by condensing formaldehyde and a polyamine with a sulfur-containing phenolic mixture consisting of (1) from 5 to 40% of a sulfurized alkylphenol; and (2) from 95 to 60% of phenol alkylated with polyisobutene of 16 to 128 carbon atoms or a mixture of said phenol alkylated with polyisobutene and phenol alkylated with a propylene tetramer. They are useful as additives for lubricating oils, particularly for use in marine cylinder lubricating oils.
Inventors
- 👤 John M. King
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 15:49
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/20; C10M159/22; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C08G; C08G14/00; C08G14/02; C08G14/04; C08G14/06; C08G14/12; C10M159/16; C10M2203/00; C10M2203/10; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/062; C10M2217/00; C10M2217/02; C10M2217/04; C10M2219/00; C10M2219/02; C10M2219/08; C10M2219/082; C10M2219/087; C10M2219/088; C10M2219/089; C10M2221/00; C10M2221/02; C10N; C10N2040/00; C10N2040/25; C10N2040/252; C10N2040/253; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
78 words
A lubricating oil additive selected from a Mannich base condensation product and the alkaline earth metal salts thereof, said Mannich base being prepared by condensing formaldehyde and a polyamine with a sulfur-containing phenolic mixture consisting of (1) from 5 to 40% of a sulfurized alkylphenol and (2) from 95 to 60% of phenol alkylated with polyisobutene of 16 to 128 carbon atoms or a mixture of said phenol alkylated with polyisobutene and phenol alkylated with a propylene tetramer.
Claim 2
Dependent Claim
78 words
A lubricating oil additive selected from a Mannich base condensation product and the alkaline earth metal salts thereof, said Mannich base being prepared by condensing formaldehyde and a polyamine with a sulfur-containing phenolic mixture consisting of (1) from 5 to 40% of a sulfurized alkylphenol and (2) from 95 to 60% of phenol alkylated with polyisobutene of 16 to 128 carbon atoms or a mixture of said phenol alkylated with polyisobutene and phenol alkylated with a propylene tetramer.
Claim 3
Dependent Claim
20 words
The calcium salt of said Mannich condensation product of claim 1 wherein said polyisobutene contains 32 to 100 carbon atoms.
Claim 4
Dependent Claim
20 words
The magnesium salt of said Mannich condensation product of claim 1 wherein said polyisobutene contains 32 to 100 carbon atoms.
Claim 5
Dependent Claim
35 words
The additive according to claim 1 wherein component (2) consists of 95 to 30% phenol alkylated with propylene tetramer and 5 to 70% phenol alkylated with a polyisobutylene of about 16 to 128 carbon atoms.
Claim 6
Dependent Claim
30 words
A lubricating oil composition comprising an oil of lubricating viscosity and from 0.1 to 40% by weight of a lubricating oil additive according to claim 1, 2, 3 or 4.
Claim 7
Dependent Claim
37 words
A lubricating oil concentrate comprising from 15 to 60% by weight of an oil of lubricating viscosity and from 85 to 40% by weight of a lubricating oil additive according to claim 1, 2, 3 or 4.
Claim 8
Dependent Claim
101 words
A process for preparing a lubricating oil additive according to claim 1 which comprises condensing 0.5 to 0.85 mol formaldehyde, at least 0.3 mol of a polyamine, and 1.0 mol of a sulfur-containing phenolic mixture consisting of (1) from 5 to 40% of a sulfurized alkylphenol; and (2) from 95 to 60% of phenol alkylated with polyisobutene of 16 to 128 carbon atoms or a mixture of said phenol alkylated with polyisobutene and phenol alkylated with a propylene tetramer and, if the salt is desired, forming the alkaline earth metal salt by neutralizing with an alkaline earth metal oxide or hydroxide.
Claim 9
Dependent Claim
10 words
The product prepared according to the process of claim 7.
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) | 1982-12-10 | 1983-06-11 | 1983-12-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-12-10 | 1987-06-11 | 1987-12-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-12-10 | 1991-06-11 | 1991-12-11 | $7700.00 | Window Closed / Lapsed |