US4036768A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Polymethacrylate and lube composition thereof
Assignee: Texaco Inc
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Filing: 1976-06-14
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Granted: 1977-07-19
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Expires: 1996-06-14
Abstract
Abstract A complex product of (1) an interpolymer of dialkylaminoalkyl methacrylate, C1-C6 alkyl methacrylate, C10-C14 alkyl methacrylate and C16-C20 alkyl methacrylate monomers and (2) a liquid alkylbenzene of a molecular weight between about 100 and 5000, prepared by polymerizing the monomers comprising said interpolymer in the presence of said liquid alkylbenzene. A mineral oil composition of improved viscosity, pour depressing and detergent-dispersant properties and concentrates thereof comprising between about 10 and 95 wt. % of a mineral oil of lubricating viscosity and between about 0.1 and 90 wt. % of said complex product.
Inventors
- 👤 Wheeler C. Crawford
- 👤 Roy I. Yamamoto
- 👤 Carmen M. Cusano
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:09
CPC Classifications
C; C10; C10M; C10M157/00; C08; C08F; C08F220/00; C08F220/02; C08F220/10; C08F220/12; C08F220/16; C08F220/18; C08F220/1804; C08F220/1818; C08F220/34; C10M1/00; C10M1/08; C10M149/00; C10M149/02; C10M149/04; C10M157/04; C10M2203/00; C10M2203/06; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/026; C10M2207/027; C10M2207/10; C10M2207/12; C10M2207/121; C10M2207/123; C10M2207/129; C10M2207/22; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/065; C10M2215/066; C10M2215/08; C10M2215/082; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/023; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/04; C10M2219/046; C10M2219/08; C10M2219/082; C10M2219/086; C10M2219/087; C10M2219/089; C10M2219/10; C10M2219/104; C10M2219/108; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/042; C10M2223/045; C10M2223/12; C10M2225/00; C10M2225/02; C10M2225/04; C10M2225/041; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/08; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
199 words
A complex polymethacrylate-liquid alkylbenzene product of a polymethacrylate to alkylbenzene component weight ratio of between about 4:1 and 2:3, said liquid alkylbenzene of a molecular weight between about 100 and 5000, said polymethacrylate of a molecular weight of between about 5×10 4 and 10 6 composed of the following monomeric elements: a. between about 1 and 10 wt. % dialkylaminoalkyl methacrylate characterized by the formula: ##STR8## R and R 1 are alkyl of from 1 to 2 carbons A is alkanediyl of from 1 to 5 carbons b. between about 15 and 30 wt. % C 1 -C 6 alkyl methacrylate characterized by the formula: ##STR9## where R 2 is alkyl of from 1 to 6 carbons c. between 40 and 60 wt. % of C 10 -C 14 alkyl methacrylate characterized by the formula: ##STR10## where R 3 is alkyl of from 10 to 14 carbons d. between about 15 and 30 wt. % of C 16 -C 20 alkyl methacrylate characterized by the formula: ##STR11## where R 4 is alkyl of from 16 to 20 carbons, said complex product prepared by polymerizing said monomeric elements in the ratios as defined in the presence of said liquid alkylbenzene.
Claim 2
Dependent Claim
199 words
A complex polymethacrylate-liquid alkylbenzene product of a polymethacrylate to alkylbenzene component weight ratio of between about 4:1 and 2:3, said liquid alkylbenzene of a molecular weight between about 100 and 5000, said polymethacrylate of a molecular weight of between about 5×10 4 and 10 6 composed of the following monomeric elements: a. between about 1 and 10 wt. % dialkylaminoalkyl methacrylate characterized by the formula: ##STR8## R and R 1 are alkyl of from 1 to 2 carbons A is alkanediyl of from 1 to 5 carbons b. between about 15 and 30 wt. % C 1 -C 6 alkyl methacrylate characterized by the formula: ##STR9## where R 2 is alkyl of from 1 to 6 carbons c. between 40 and 60 wt. % of C 10 -C 14 alkyl methacrylate characterized by the formula: ##STR10## where R 3 is alkyl of from 10 to 14 carbons d. between about 15 and 30 wt. % of C 16 -C 20 alkyl methacrylate characterized by the formula: ##STR11## where R 4 is alkyl of from 16 to 20 carbons, said complex product prepared by polymerizing said monomeric elements in the ratios as defined in the presence of said liquid alkylbenzene.
Claim 3
Dependent Claim
225 words
A mineral oil composition comprising between about 10 and 95 wt. % mineral lubricating oil and between about 0.1 and 90 wt. % of a complex polymethacrylate-alkylbenzene product of a polymethacrylate to alkylbenzene component weight ratio of between about 4:1 and 2:3, said liquid alkylbenzene of a molecular weight between about 100 and 5000, said polymethyacrylate interpolymer of a molecular weight of between about 5×10 4 and 10 6 composed of the following monomeric elements. a. between about 1 and 10 wt. % dialkylaminoalkyl methacrylate characterized by the formula: ##STR12## where R and R 1 are alkyl of from 1 to 2 carbons A is alkanediyl of from 1 to 5 carbons b. between about 15 and 30 wt. % C 1 -C 6 alkyl methacrylate characterized by the formula: ##STR13## where R 2 is alkyl of from 1 to 6 carbons c. between about 40 and 60 wt. % of C 10 -C 14 alkyl methacrylate characterized by the formula: ##STR14## where R 3 is alkyl of from 10 to 14 carbons d. between about 15 and 30 wt. % of C 16 -C 20 alkyl methacrylate characterized by the formula: ##STR15## where R 4 is alkyl of from 16 to 20 carbons said complex product prepared by polymerizing said monomeric elements in the ratios defined in the presence of said liquid alkylbenzene component.
Claim 4
Dependent Claim
225 words
A mineral oil composition comprising between about 10 and 95 wt. % mineral lubricating oil and between about 0.1 and 90 wt. % of a complex polymethacrylate-alkylbenzene product of a polymethacrylate to alkylbenzene component weight ratio of between about 4:1 and 2:3, said liquid alkylbenzene of a molecular weight between about 100 and 5000, said polymethyacrylate interpolymer of a molecular weight of between about 5×10 4 and 10 6 composed of the following monomeric elements. a. between about 1 and 10 wt. % dialkylaminoalkyl methacrylate characterized by the formula: ##STR12## where R and R 1 are alkyl of from 1 to 2 carbons A is alkanediyl of from 1 to 5 carbons b. between about 15 and 30 wt. % C 1 -C 6 alkyl methacrylate characterized by the formula: ##STR13## where R 2 is alkyl of from 1 to 6 carbons c. between about 40 and 60 wt. % of C 10 -C 14 alkyl methacrylate characterized by the formula: ##STR14## where R 3 is alkyl of from 10 to 14 carbons d. between about 15 and 30 wt. % of C 16 -C 20 alkyl methacrylate characterized by the formula: ##STR15## where R 4 is alkyl of from 16 to 20 carbons said complex product prepared by polymerizing said monomeric elements in the ratios defined in the presence of said liquid alkylbenzene component.
Claim 5
Dependent Claim
23 words
A mineral lubricating oil composition in accordance with claim 2 wherein said complex product content is between about 10 and 90 wt. %.
Claim 6
Dependent Claim
23 words
A mineral lubricating oil composition in accordance with claim 2 wherein said complex product content is between about 0.1 and 10 wt. %.
Claim 7
Dependent Claim
20 words
A complex product in accordance with claim 1 wherein said alkylbenzene is dialkylbenzene of a molecular weight of about 405.
Claim 8
Dependent Claim
22 words
A mineral lubricating oil composition in accordance with claim 2 wherein said alkylbenzene is dialkylbenzene of a molecular weight of about 405.
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) | 1980-07-18 | 1981-01-17 | 1981-07-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-07-18 | 1985-01-17 | 1985-07-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-07-18 | 1989-01-17 | 1989-07-19 | $7700.00 | Window Closed / Lapsed |