US4715975A
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Oil containing dispersant VII olefin copolymer
Assignee: Afton Chemical Additives Corp
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Filing: 1984-08-20
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Granted: 1987-12-29
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Expires: 2004-08-20
Abstract
Abstract A VII olefin copolymer, prepared by grafting allyl amine onto EPM or EPT, permits attainment of improved dispersancy and viscosity index in oils.
Inventors
- 👤 Maria M. Kapusciniski
- 👤 Benjamin J. Kaufman
- 👤 Christopher S. Liu
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:36
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10M149/04; C08; C08F; C08F255/00; C08F255/02; C08F255/04; C08F255/06; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C10L1/2366; C10M143/00; C10M143/02; C10M2205/00; C10M2205/02; C10M2205/022; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2215/00; C10M2215/02; C10M2215/06; C10M2215/064; C10M2215/086; C10M2215/24; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2229/00; C10M2229/02; C10M2229/04; C10M2229/05; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/25; C10N2040/251; C10N2040/252; C10N2040/253; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
20 words
A graft polymer comprising an oil-soluble, substantially linear, carbon-carbon backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 2
Dependent Claim
20 words
A graft polymer comprising an oil-soluble, substantially linear, carbon-carbon backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 3
Dependent Claim
22 words
A graft polymer as claimed in claim 1 wherein said backbone polymer is a copolymer of ethylene-propylene or of ethylene-propylene third monomer.
Claim 4
Dependent Claim
20 words
A graft polymer as claimed in claim 1 wherein the molecular weight M n of said backbone polymer is 10,000-1,000,000.
Claim 5
Dependent Claim
20 words
A graft polymer as claimed in claim 1 wherein the molecular weight M n of said backbone polymer is 20,000-200,000.
Claim 6
Dependent Claim
22 words
A graft polymer as claimed in claim 1 wherein said graft polymer contains one amine-containing unit per 100-300 units of backbone polymer.
Claim 7
Dependent Claim
38 words
A graft polymer comprising an oil-soluble, substantially linear carbon-carbon backbone polymer of molecular weight M n of 10,000-1,000,000, derived from ethylene-propylene or ethylene-propylene-third monomer backbone polymers, said backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 8
Dependent Claim
38 words
A graft polymer comprising an oil-soluble, substantially linear carbon-carbon backbone polymer of molecular weight M n of 10,000-1,000,000, derived from ethylene-propylene or ethylene-propylene-third monomer backbone polymers, said backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 9
Dependent Claim
40 words
A lubricating oil composition containing a major portion of a lubricating oil and a minor effective viscosity-index improving amount of a graft copolymer comprising an oil-soluble, substantially linear, carbon-carbon backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 10
Dependent Claim
40 words
A lubricating oil composition containing a major portion of a lubricating oil and a minor effective viscosity-index improving amount of a graft copolymer comprising an oil-soluble, substantially linear, carbon-carbon backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 11
Dependent Claim
23 words
A lubricating oil composition as claimed in claim 7 wherein said backbone polymer is a copolymer of ethylene-propylene or of ethylene-propylene third monomer.
Claim 12
Dependent Claim
21 words
A lubricating oil composition as claimed in claim 7 wherein the molecular weight M n of said backbone polymer is 10,000-1,000,000.
Claim 13
Dependent Claim
21 words
A lubricating oil composition as claimed in claim 7 wherein the molecular weight M n of said backbone polymer is 20,000-200,000.
Claim 14
Dependent Claim
23 words
A lubricating oil composition as claimed in claim 9 wherein said graft polymer contains one amine-containing unit per 100-300 units of backbone polymer.
Claim 15
Dependent Claim
61 words
A lubricating oil composition comprising a major portion of a lubricating oil and a minor effective viscosity index-improving amount of 0.4-5 w% of a graft polymer comprising an oil-soluble, substantially linear carbon-carbon backbone polymer of molecular weight M n of 10,000-1,000,000, derived from ethylene-propylene or ethylene-propylene-third monomer backbone polymers, said backbone polymer having graft polymerized thereon units derived from allyl amine.
Claim 16
Dependent Claim
61 words
A lubricating oil composition comprising a major portion of a lubricating oil and a minor effective viscosity index-improving amount of 0.4-5 w% of a graft polymer comprising an oil-soluble, substantially linear carbon-carbon backbone polymer of molecular weight M n of 10,000-1,000,000, derived from ethylene-propylene or ethylene-propylene-third monomer backbone polymers, said backbone polymer having graft polymerized thereon units derived from allyl 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) | 1990-12-28 | 1991-06-29 | 1991-12-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-12-28 | 1995-06-29 | 1995-12-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-12-28 | 1999-06-29 | 1999-12-29 | $7700.00 | Window Closed / Lapsed |