US4952637A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hydrocarbon compositions containing polyolefin graft polymers
Assignee: Afton Chemical Additives Corp
•
Filing: 1988-07-22
•
Granted: 1990-08-28
•
Expires: 2008-07-22
Abstract
Abstract Fuel oils and lubricants of improved properties contain ethylene-propylene copolymers bearing units derived from N-vinyl pyrrolidone and phenothiazine.
Inventors
- 👤 Maria M. Kapuscinski
- 👤 Larry D. Grina
- 👤 Ronald E. Jones
- 👤 Rodney Lu-Dai Sung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 19:09
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2493; C10M143/00; C10M143/02; C10M151/00; C10M151/04; C10M2205/00; C10M2205/02; C10M2205/022; C10M2205/08; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/024; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/06; C10M2215/064; C10M2215/086; C10M2215/22; C10M2215/24; C10M2215/26; C10M2215/28; C10M2217/00; C10M2217/02; C10M2217/022; C10M2217/028; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2219/10; C10M2219/104; C10M2219/106; C10M2219/108; C10M2221/00; C10M2221/04; C10M2221/041; C10M2221/043; 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; C10N2040/255; C10N2040/28
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
163 words
The process for preparing a graft polymer which comprises intimately mixing in a reaction mixture (a) an oil-soluble, substantially linear, carbon-carbon backbone polymer of molecular weight M n of 10,000-1,000,000; (b) as a first graft monomer amine containing a polymerizable ethylenically unsaturated double bond, (i) N-vinylpyrrolidone, (ii) N-vinylimidazole, (iii) the reaction product of an amine and an epoxy of an aliphatic unsaturated carbocyclic acid, (iv) the reaction product of an amine and an ether containing an epoxy group and an ethylenically unsaturated carbon-to-carbon double bond, or (v) the reaction product of an amine and an aldehyde containing a carbon-to-carbon double bond; (c) as a second functional monomer, a phenothiazine; and (d) a free radial initiator; maintaining the temperature of the reaction mixture at a temperature at least as high as the decomposition temperature of said initiator thereby effecting decomposition of said initiator and bonding of said first and second monomers onto said backbone polymer to form graft polymer; and recovering said graft polymer.
Claim 2
Dependent Claim
163 words
The process for preparing a graft polymer which comprises intimately mixing in a reaction mixture (a) an oil-soluble, substantially linear, carbon-carbon backbone polymer of molecular weight M n of 10,000-1,000,000; (b) as a first graft monomer amine containing a polymerizable ethylenically unsaturated double bond, (i) N-vinylpyrrolidone, (ii) N-vinylimidazole, (iii) the reaction product of an amine and an epoxy of an aliphatic unsaturated carbocyclic acid, (iv) the reaction product of an amine and an ether containing an epoxy group and an ethylenically unsaturated carbon-to-carbon double bond, or (v) the reaction product of an amine and an aldehyde containing a carbon-to-carbon double bond; (c) as a second functional monomer, a phenothiazine; and (d) a free radial initiator; maintaining the temperature of the reaction mixture at a temperature at least as high as the decomposition temperature of said initiator thereby effecting decomposition of said initiator and bonding of said first and second monomers onto said backbone polymer to form graft polymer; and recovering said graft polymer.
Claim 3
Dependent Claim
152 words
The process for preparing a graft polymer which comprises intimately admixing in a reaction mixture (i) an oil-soluble, substantially linear, carbon-carbon backbone polymer, (ii) first graft monomer amine containing a polymerizable ethylenically unsaturated double bond and (iii) a free radical initiator, maintaining the temperature of the reaction mixture at a temperature at least as high as the decomposition temperature of said initiator thereby effecting decomposition of said initiator and binding of said graft monomer onto said backbone polymer to form graft polymer; intimately admixing in a reaction mixture (i) said graft polymer and (iii) as a second functional monomer, a phenothiazine and (iii) a free radical initiator; maintaining the temperature of the reaction mixture at a temperature at least as high as said decomposition temperature thereby effecting decomposition of said initiator and bonding said second functional monomer onto said graft polymer to form product graft polymer; and recovering said product graft polymer.
Claim 4
Dependent Claim
152 words
The process for preparing a graft polymer which comprises intimately admixing in a reaction mixture (i) an oil-soluble, substantially linear, carbon-carbon backbone polymer, (ii) first graft monomer amine containing a polymerizable ethylenically unsaturated double bond and (iii) a free radical initiator, maintaining the temperature of the reaction mixture at a temperature at least as high as the decomposition temperature of said initiator thereby effecting decomposition of said initiator and binding of said graft monomer onto said backbone polymer to form graft polymer; intimately admixing in a reaction mixture (i) said graft polymer and (iii) as a second functional monomer, a phenothiazine and (iii) a free radical initiator; maintaining the temperature of the reaction mixture at a temperature at least as high as said decomposition temperature thereby effecting decomposition of said initiator and bonding said second functional monomer onto said graft polymer to form product graft polymer; and recovering said product graft polymer.
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) | 1993-08-27 | 1994-02-26 | 1994-08-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-08-27 | 1998-02-26 | 1998-08-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-08-27 | 2002-02-26 | 2002-08-28 | $7700.00 | Window Closed / Lapsed |