US3856689A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Oil-soluble polymers of n-3-aminoalkyl acrylamides, and lubricants containing them
Assignee: Lubrizol Corp
•
Filing: 1972-03-24
•
Granted: 1974-12-24
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Expires: 1992-03-24
Abstract
Abstract Oil-soluble polymers of N-3-aminoalkyl acrylamides, especially N-(1,1-dimethyl-3-dimethylamino-propyl)acrylamide, are obtained by copolymerization with a monomer (especially an alkyl acrylate or methacrylate) containing an alkyl group with at least about 8 carbon atoms. These polymers are useful as dispersants and viscosity modifiers for lubricants.
Inventors
- 👤 D Hoke
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 06:29
CPC Classifications
C; C07; C07D; C07D295/00; C07D295/04; C07D295/12; C07D295/125; C07D295/13; B; B01; B01D; B01D21/00; B01D21/01; C02; C02F; C02F1/00; C02F1/52; C02F1/54; C08; C08F; C08F20/00; C08F20/02; C08F20/52; C08F20/54; C08F20/60; C08L; C08L23/00; C08L23/02; G; G03; G03F; G03F7/00; G03F7/004; G03F7/027; C08K; C08K5/00; C08K5/04; C08K5/10; C08K5/16; C08K5/20; C10; C10M; C10M2203/00; C10M2203/06; C10M2205/00; C10M2205/02; C10M2205/024; C10M2205/026; C10M2207/00; C10M2207/04; C10M2207/28; C10M2207/282; C10M2207/34; C10M2209/00; C10M2209/02; C10M2209/04; C10M2209/06; C10M2209/062; C10M2209/08; C10M2209/084; C10M2209/086; C10M2209/10; C10M2209/103; C10M2209/104; C10M2209/105; C10M2209/11; C10M2209/111; C10M2211/00; C10M2211/06; C10M2211/08; C10M2213/00; C10M2213/02; C10M2213/06; C10M2213/062; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/08; C10M2215/082; C10M2215/086; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/026; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/02; C10M2219/024; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/06; C10M2219/062; C10M2219/066; C10M2219/068; C10M2219/08; C10M2219/082; C10M2219/083; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/041; C10M2223/042; C10M2223/045; C10M2223/06; C10M2223/065; C10M2223/12; C10M2225/00; C10M2225/02; C10M2225/04; C10M2225/041; C10M2227/00; C10M2227/02; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/041; C10M2229/042; C10M2229/045; C10M2229/046; C10M2229/047; C10M2229/048; C10M2229/05; C10N; C10N2010/00; C10N2010/02; C10N2010/04; C10N2040/00; C10N2040/02; C10N2040/08; C10N2040/20; C10N2040/25; C10N2040/255; C10N2040/26
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
80 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A LUBRICATING OIL AND A MINOR AMOUNT, EFFECTIVE TO IMPART DISPERSANCY THERETO OR MODIFY THE VISCOSITY THEREOF, OF AN OIL-SOLUBLE INTERPOLYMER COMPRISING (A) AT LEAST ABOUT 50 PERCENT BY WEIGHT OF UNITS DERIVED BY FREE RADICAL POLYMERIZATION FROM AN ALKYL ACRYLATE OR METHACRYLATE IN WHICH THE ALKYL GROUP CONTAINS AT LEAST ABOUT 8 CARBON ATOMS, SAID INTERPOLYMER ALSO CONTAINING (B) UNITS DERIVED BY FREE RADICAL POLYMERIZATION FROM A MONOMER OF THE FORMULA
Claim 2
Dependent Claim
80 words
A LUBRICATING COMPOSITION COMPRISING A MAJOR AMOUNT OF A LUBRICATING OIL AND A MINOR AMOUNT, EFFECTIVE TO IMPART DISPERSANCY THERETO OR MODIFY THE VISCOSITY THEREOF, OF AN OIL-SOLUBLE INTERPOLYMER COMPRISING (A) AT LEAST ABOUT 50 PERCENT BY WEIGHT OF UNITS DERIVED BY FREE RADICAL POLYMERIZATION FROM AN ALKYL ACRYLATE OR METHACRYLATE IN WHICH THE ALKYL GROUP CONTAINS AT LEAST ABOUT 8 CARBON ATOMS, SAID INTERPOLYMER ALSO CONTAINING (B) UNITS DERIVED BY FREE RADICAL POLYMERIZATION FROM A MONOMER OF THE FORMULA
Claim 3
Dependent Claim
45 words
A lubricating composition according to claim 1 wherein eaCh of R1, R2 and R3 is hydrogen or a lower alkyl radical, each of R4 and R5 is a lower alkyl radical, R6 is hydrogen and each of Z1 and Z2 is a lower alkyl radical.
Claim 4
Dependent Claim
26 words
A lubricating composition according to claim 2 wherein said A units comprise at least 75 percent of said interpolymers with the balance being said B units.
Claim 5
Dependent Claim
22 words
A lubricating composition according to claim 3 wherein R1, R2 and R3 are hydrogen and R4, R5, Z1 and Z2 are methyl.
Claim 6
Dependent Claim
16 words
A lubricating composition according to claim 3 wherein said A units are derived from isodecyl acrylate.
Claim 7
Dependent Claim
22 words
A lubricating composition according to claim 5 wherein R1, R2 and R3 are hydrogen and R4, R5, Z1 and Z2 are methyl.
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) | 1977-12-23 | 1978-06-24 | 1978-12-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-12-23 | 1982-06-24 | 1982-12-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-12-23 | 1986-06-24 | 1986-12-24 | $7700.00 | Window Closed / Lapsed |