Patent EP0271937A2 successfully refreshed from Google Patents.
EP0271937A2
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Lubricating composition
Assignee: Shell Internationale Research Maatschappij BV
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Filing: 1987-11-10
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Granted: —
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Expires: 2007-11-10
Abstract
Abstract Polyolefin-substituted succinimide, which is the reaction product of a polyamine with 3 to 25 carbon atoms, selected from linear and branched alkylene polyamines, cycloaliphatic polyamines and heterocyclic polyamines, with a polyolefin-substituted succinic anhydride, in which the polyolefin moiety has a number average molecular weight from 600 to 1,300, and in which the average number of succinic groups per polyolefin group is between 1.4 and 4.0; process for preparing such products, and lubricating oil compositions containing them.
Inventors
- 👤 Christiaan Dirk Martinus Beverwijk
- 👤 Feike De Jong
- 👤 Peter Sant
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:45
CPC Classifications
C; C10; C10M; C10M133/00; C10M133/52; C10M133/58; C08; C08F; C08F8/00; C08F8/30; C08F8/32; C10M133/56; C10M2205/00; C10M2205/06; C10M2207/00; C10M2207/02; C10M2207/023; C10M2207/027; C10M2207/028; C10M2207/10; C10M2207/14; C10M2207/144; C10M2207/146; C10M2207/16; C10M2207/26; C10M2207/262; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/086; C10M2215/22; C10M2215/221; C10M2215/225; C10M2215/226; C10M2215/24; C10M2215/26; C10M2215/28; C10M2215/30; C10M2217/00; C10M2217/04; C10M2217/046; C10M2217/06; C10M2219/00; C10M2219/04; C10M2219/044; C10M2219/046; C10M2223/00; C10M2223/02; C10M2223/04; C10M2223/045; C10M2227/00; C10M2227/06; C10M2227/061; C10N; C10N2010/00; C10N2010/04; C10N2040/00; C10N2040/04; C10N2040/042; C10N2040/044; C10N2040/046; C10N2040/08; C10N2040/20; C10N2040/25; C10N2040/251; C10N2040/255; C10N2040/28; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
65 words
Polyolefin-substituted succinimide which is the reaction product of a polyamine with 3 to 25 carbon atoms, selected from linear and branched alkylene polyamines, cycloaliphatic polyamines, and heterocyclic polyamines, with a polyolefin-substituted succinic anhydride in which the polyolefin moiety has a number average molecular weight from 600 to 1,300 and in which the average number of succinic groups per polyolefin moiety is between 1.4 and 4.0.
Claim 2
Dependent Claim
65 words
Polyolefin-substituted succinimide which is the reaction product of a polyamine with 3 to 25 carbon atoms, selected from linear and branched alkylene polyamines, cycloaliphatic polyamines, and heterocyclic polyamines, with a polyolefin-substituted succinic anhydride in which the polyolefin moiety has a number average molecular weight from 600 to 1,300 and in which the average number of succinic groups per polyolefin moiety is between 1.4 and 4.0.
Claim 3
Dependent Claim
15 words
Compound as claimed in claim 1, in which the polyolefin moiety is derived from polyisobutylene.
Claim 4
Dependent Claim
23 words
Compound as claimed in claim 1 or 2, in which the polyolefin moiety has a number average molecular weight of 750 to 1250.
Claim 5
Dependent Claim
24 words
Compound as claimed in claim 1, 2 or 3 in which the average number of succinic groups per polyolefin moiety between 1.5 and 3.0.
Claim 6
Dependent Claim
26 words
Compound as claimed in any one of the preceding claims, in which the polyamine is selected from diethylene triamine, triethylene tetramine, tetraethylene pentamine and pentaethylene hexamine.
Claim 7
Dependent Claim
27 words
Compound as claimed in any one of the preceding claims, in which the equivalent ratio of succinic anhydride groups and polyamine group is between 1.4 and 2.2.
Claim 8
Dependent Claim
88 words
Process for the preparation of polyolefin-substituted succinimide as defined in claim 1, in which an polyalkene or halogenated polyalkene, of number average molecular weight of 600 to 1300 is contacted with maleic anhydride at temperature of 140 to 220°C, optionally in the presence of chlorine, the molar amount of maleic acid or anhydride per equivalent polyalkene being from 1.5 to 4.5, and subsequently reacting the product obtained with a polyamine with 3 to 25 carbon atoms, selected from linear and branched alkylene polyamines, cycloaliphatic polyamines and heterocyclic polyamines.
Claim 9
Dependent Claim
33 words
Process as claimed in claim 7, in which the molar amount of maleic acid or anhydride groups per equivalent polyalkene is from 1.8 to 4.0, and per equivalent polyamine is greater than 1.
Claim 10
Dependent Claim
13 words
Polyolefin-substituted succinimide produced by a process as claimed in claim 7 or 8.
Claim 11
Dependent Claim
28 words
Lubricating composition comprising a major portion of a lubricating oil and a minor portion of a polyolefin-substituted succinimide as claimed in any one of claims 1-6 or 9.
Claim 12
Dependent Claim
107 words
Lubricating composition comprising a major portion of a lubricating oil and a minor portion of an additive obtained by post-treating a polyolefin-substituted succinimide as claimed in any one of claims 1-6 or 9, which post-treating has been carried out by an agent selected from boron oxide, boron oxide hydrate, boron halides, boron acids, esters of boron acids, carbon disulfide, H₂S, sulfur, sulfur chlorides, alkenyl cyanides, carboxylic acid acylating agents, aldehydes, ketones, urea, thiourea, guanidine, dicyanodiamide, hydrocarbyl phosphates, hydrocarbyl phosphites, hydrocarbyl thiophosphates, hydrocarbyl thiophosphites, phosphorus sulfides, phosphorus oxides, phosphoric acid, hydrocarbyl thiocyanates, hydrocarbyl isocyanates, hydrocarbyl isothiocyanates, epoxides, episulfides, formaldehyde or formaldehyde-producing compounds plus phenols, and sulfur plus phenols.
Claim 13
Dependent Claim
27 words
Lubricating composition as claimed in claim 10 or 11 in which the amount of the polyolefin-substituted succinimide is between 0.1 and 10%w based on the total composition.
Claim 14
Dependent Claim
32 words
Lubricating oil additive concentrate comprising a lubricating oil and from 10 to 80%w based on the total concentrate, of a polyolefin-substituted succinimide as claimed in any one of claims 1-6 or 9.
References Cited (Backward Citations)
No citation records indexed.
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