Patent US4131553A successfully refreshed from Google Patents.
US4131553A
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Alkylbenzene sulfonic acid modified mannich reaction products from oxidized polymers
Assignee: Ethyl Corp
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Filing: 1978-02-15
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Granted: 1978-12-26
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Expires: 1998-02-15
Abstract
Abstract This invention provides a process for and products of the Mannich condensation reaction of oxidized olefinic polymers. The Mannich reaction is carried out in the presence of about 0.01 to 40.0% by weight of an oil soluble sulfonic acid based on the neat polymer. The sulfonic acid improves the properties of the oxidized oil soluble Mannich reaction product and catalyzes the Mannich condensation reaction.
Inventors
- 👤 C. Thomas West
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 03:23
CPC Classifications
C; C10; C10M; C10M159/00; C10M159/12; C10M159/16; C08; C08F; C08F8/00; C08F8/34; C08F8/50; C08F2800/00; C08F2800/10; C10M2207/00; C10M2207/40; C10M2207/404; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
113 words
A process of producing a dispersant-viscosity index improver which comprises reacting: a high molecular weight oxidized amorphous addition polymer with a formaldehyde yielding reagent, an amine selected from the group consisting of aliphatic primary and secondary amines having from about 2 to 12 carbon atoms, 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 0.01 to 40.0% by weight of an oil soluble sulfonic acid based on the copolymer, wherein the sulfonic acid is contacted with the oxidized polymer after the amine.
Claim 2
Dependent Claim
113 words
A process of producing a dispersant-viscosity index improver which comprises reacting: a high molecular weight oxidized amorphous addition polymer with a formaldehyde yielding reagent, an amine selected from the group consisting of aliphatic primary and secondary amines having from about 2 to 12 carbon atoms, 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 0.01 to 40.0% by weight of an oil soluble sulfonic acid based on the copolymer, wherein the sulfonic acid is contacted with the oxidized polymer after the amine.
Claim 3
Dependent Claim
35 words
The process of claim 1 wherein the oil soluble sufficient acid is represented by the formula: ##STR3## wherein R is an alkyl group with at least 9 carbons, and n is a number from 1-5.
Claim 4
Dependent Claim
25 words
The process of claim 2 wherein the oil soluble sulfonic acid was an alkyl group having a molecular weight from about 130 to about 1200.
Claim 5
Dependent Claim
29 words
The process of claim 1 wherein the oil soluble sulfonic acid is a polypropyl benzene sulfonic acid of a number average molecular weight from about 200 to about 1200.
Claim 6
Dependent Claim
16 words
A lubricant oil containing an effective amount of the product of the process 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) | 1981-12-25 | 1982-06-26 | 1982-12-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-12-25 | 1986-06-26 | 1986-12-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-12-25 | 1990-06-26 | 1990-12-26 | $7700.00 | Window Closed / Lapsed |