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US4425245A
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Benzene sulfonic acid modified aromatic Mannich products from alkyl phenols
Assignee: Ethyl Corp
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Filing: 1981-09-11
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Granted: 1984-01-10
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Expires: 2001-09-11
Abstract
Abstract A Mannich condensation reaction of an alkyl phenol, a formaldehyde-yielding reagent, an amine, and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine.
Inventors
- 👤 Paul J. Cahill
- 👤 Edmund J. Piasek, deceased
- 👤 administratrix by Evelyn W. Hunt
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 09:31
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/042; C10M2217/043; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
114 words
A process for producing an improved aromatic Mannich product having enhanced lubricating properties which comprises reacting an alkyl phenol wherein the alkyl group is derived from a polyolefin having a molecular weight of about 600-3200, a formaldehyde-yielding reagent, an aliphatic amine of the general formula NH 2 [(CH 2 ) z NH] x H wherein z is an integer from about 2 to about 6 and x is an integer from about 1 to about 10 and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine wherein the oil soluble sulfonic acid is added to the reaction mixture at the same time as or after the polyamine.
Claim 2
Dependent Claim
114 words
A process for producing an improved aromatic Mannich product having enhanced lubricating properties which comprises reacting an alkyl phenol wherein the alkyl group is derived from a polyolefin having a molecular weight of about 600-3200, a formaldehyde-yielding reagent, an aliphatic amine of the general formula NH 2 [(CH 2 ) z NH] x H wherein z is an integer from about 2 to about 6 and x is an integer from about 1 to about 10 and about 0.001 to 2.0 moles of an oil soluble benzene sulfonic acid per mole of amine wherein the oil soluble sulfonic acid is added to the reaction mixture at the same time as or after the polyamine.
Claim 3
Independent Claim
62 words
A method for producing an improved aromatic Mannich product prepared from an alkyl phenol, formaldehyde or a formaldehyde-yielding reagent, and an amine, which method comprises adding a benzene sulfonic acid to the aromatic Mannich product, said benzene sulfonic acid being added in an amount within the range of about 0.001 to 2.0 moles of said benzene sulfonic acid per mole of amine.
Claim 4
Independent Claim
62 words
A method for producing an improved aromatic Mannich product prepared from an alkyl phenol, formaldehyde or a formaldehyde-yielding reagent, and an amine, which method comprises adding a benzene sulfonic acid to the aromatic Mannich product, said benzene sulfonic acid being added in an amount within the range of about 0.001 to 2.0 moles of said benzene sulfonic acid per mole of amine.
Claim 5
Dependent Claim
114 words
A process for producing an improved aromatic Mannich product having enhanced lubricating properties, which process comprises reacting an alkyl phenol wherein the alkyl group is derived from a polyolefin having a molecular weight of about 600-3200, formaldehyde or a formaldehyde-yielding reagent, an aliphatic amine of the general formula NH 2 [CH 2 ) z NH] x H wherein z is an integer from about 2 to about 6 and x is an integer from about 1 to about 10 and about 0.001 to 2.0 moles of an oil-soluble benzene sulfonic acid per mole of amine, wherein the oil-soluble sulfonic acid is added to the alkyl phenol, the formaldehyde or formaldehyde-yielding reagent, and the amine.
Claim 6
Dependent Claim
114 words
A process for producing an improved aromatic Mannich product having enhanced lubricating properties, which process comprises reacting an alkyl phenol wherein the alkyl group is derived from a polyolefin having a molecular weight of about 600-3200, formaldehyde or a formaldehyde-yielding reagent, an aliphatic amine of the general formula NH 2 [CH 2 ) z NH] x H wherein z is an integer from about 2 to about 6 and x is an integer from about 1 to about 10 and about 0.001 to 2.0 moles of an oil-soluble benzene sulfonic acid per mole of amine, wherein the oil-soluble sulfonic acid is added to the alkyl phenol, the formaldehyde or formaldehyde-yielding reagent, and the amine.
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) | 1987-01-09 | 1987-07-11 | 1988-01-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1991-01-09 | 1991-07-11 | 1992-01-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1995-01-09 | 1995-07-11 | 1996-01-10 | $7700.00 | Window Closed / Lapsed |