EP0199453A2
Expired / Lapsed
EP
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Hydrocarbon compositions containing polyolefin graft polymers
Assignee: Texaco Development Corp
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Filing: 1986-03-17
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Granted: —
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Expires: 2006-03-17
Abstract
Abstract Polymers having useful preparties as oil additives are obtained by incorporating additional functional monomer units into oil-soluble backbene polymers having linear carbon chains, especially ethylene-propylene copolymers and ethylene-propylene-diene tempolymers. The first functional monomers have at least one nitrogen, sulphur and/or oxygen atom in a heterocyclic ring. preferably phenothiazine or the reaction product of phenothiazine and allyl glycidyl ether. Optionally a second amine polymer (preferably N-vinylpyrrolidone) can be grafted on to the backbone polymer. The polymers of the invention consitute dispersant, anti-oxidant, viscosity index improvers for lubricating oils, while the polymers containing both types of monomer unit are also useful as dispersant additives for fuel oils.
Inventors
- 👤 Maria Magdalena Kapuscinski
- 👤 Larry Dale Grina
- 👤 Ronald Edward Jones
- 👤 Rodney Lu-Dai Sung
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-04 16:25
CPC Classifications
C; C10; C10M; C10M149/00; C10M149/02; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/24; C10L1/2493; C10M133/00; C10M133/02; C10M133/38; C10M135/00; C10M135/32; C10M135/36; C10M143/00; C10M143/02; C10M143/14; C10M149/04; C10M149/10; 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: 17
Claim 1
Independent Claim
42 words
A polymer comprising an oil-soluble backbone polymer having a linear carbon backbone and additional units thereon derived from a first functional monomer characterized in that said functional monomer has at least one atom of nitrogen, sulphur and/or oxygen in a heterocyclic ring.
Claim 2
Dependent Claim
42 words
A polymer comprising an oil-soluble backbone polymer having a linear carbon backbone and additional units thereon derived from a first functional monomer characterized in that said functional monomer has at least one atom of nitrogen, sulphur and/or oxygen in a heterocyclic ring.
Claim 3
Dependent Claim
20 words
A polymer according to claim 1 characterized in that the backbone polymer is an ethylene-propylene copolymer or an ethylene-propylene-diene terpolymer.
Claim 4
Dependent Claim
22 words
A polymer according to claim 1 or 2 characterized in that the backbone polymer has a molecular weight of 10,000 to 1,000,000.
Claim 5
Dependent Claim
65 words
A polymer according to any of claims 1 to 3 characterized in that the first functional monomer comprises a phenothiazine; an imidazole or benzimidazole; a thiazole or benzothiazole; a triazole or benzotriazole; a thiadazole, benzothiadiazole, a thiazoline, a benzo- thiazoline or a thiazolidine; a pyrimidine; a pyridine; a piperidine or pyrrolidinone; an oxazole or benzoxazole; a mercaptophenol; a thiomorpholine; a 6-mercaptopurine or a 2-thiophenomethyl amine.
Claim 6
Dependent Claim
15 words
A polymer according to claim 4 characterized in that the first functional monomer comprises phenothiazine.
Claim 7
Dependent Claim
23 words
A polymer according to claim 4 characterized in that the first functional monomer is the reaction product of phenothiazine and allyl glycidyl ether.
Claim 8
Dependent Claim
34 words
A polymer according to any of claims 1 to 6 characterized in that it comprises from 0.3 to 60 units derived from the first functional monomer per 1000 carbon atoms in the backbone polymer.
Claim 9
Dependent Claim
33 words
A polymer according to any of claims I to 6 characterized in that it additionally contains graft units derived from a second monomer which is an amine having a polymerizable ethylenic double bond.
Claim 10
Dependent Claim
76 words
A polymer according to claim 8 characterized in that the amine has the formula wherein R is a hydrocarbon group having a polymerizable ethylenic double bond, and R' and R", which may be the same or different, are each hydrogen, a hydrocarbon group, or a hydrocarbon group with an oxygen, sulphur or nitrogen atom as a hetero atom, or R' and R" together with the nitrogen atom to which they are attached constitute a heterocyclic ring.
Claim 11
Dependent Claim
18 words
A polymer according to claim 9 characterized in that the amine is N-vinylpyrrolidone, 1-vinylimidazole, 4-vinylpyridine or allyl amine.
Claim 12
Dependent Claim
45 words
A polymer according to any of claims 8 to 10 characterized in that it comprises from 0,1 to 60 units derived from the first functional monomer and from 0.1 to 80 units derived from the second monomer per 1000 carbon atoms in the polymer backbone.
Claim 13
Dependent Claim
26 words
A lubricating oil composition comprising a lubricating oil and additives, characterized in that said additives comprise a polymer according to any of claims 1 to 11.
Claim 14
Dependent Claim
26 words
A fuel oil comprisition comprising a fuel oil and additives characterized in that said additives comprise a polymer according to any of claims 1 to 11.
Claim 15
Independent Claim
43 words
A method of preparing a polymer according to any of claims 1 to 7 characterized by heating the backbone polymer and the first functional monomer with a free-radical initiator ar a temperature at least as high as the decomposition temperature of the initiator.
Claim 16
Independent Claim
71 words
A method of preparing a polymer according to any of claims 8 to 11 characterized by heating the backbone polymer and the second monomer with a free-radical initiator at a temperature at least as high as the decomposition temperature of the initiator, and subsequently heating the resulting graft polymer with the first functional monomer and the initiator at a temperature at least as high as the decomposition temperature of the initiator.
Claim 17
Independent Claim
46 words
A method of preparing a polymer according to any of claims 8 to 11 characterized by heating the backbone polymer with the first functional monomer, the second monomer and a free-radical initiator at a temperature at least as high as the decomposition temperature of the initiator.
References Cited (Backward Citations)
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