EP0400870A1
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EP
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Multifunctional viscosity index improver derived from polyamine containing one primary amino group and at least one secondary amino group exhibiting improved low temperature viscometric properties
Assignee: ExxonMobil Chemical Patents Inc
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Filing: 1990-05-22
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Granted: —
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Expires: 2010-05-22
Abstract
Abstract Composition of matter useful as a multifunctional viscosity index improver for lubricating oils comprising reaction product of: (i) (a) copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least about 10 weight percent of said copolymer chain and contains at least about 57 weight percent of said copolymer chain and contains at least about 57 weight percent ethylene, wherein said low crystalliity segment contains not greater than about 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M W / M n of less than 2 and a ratio of M z / M of less than 1.8 and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprisig at least 5 weight percent of said chain, differ incomposition form one antoher by at least 7 weight percent ethylene, said copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; and (ii) at least one polyamine containing one primary amino group and from 1 to about 6 secondary amino groups.
Inventors
- 👤 Antonio Gutierrez
- 👤 David Yen-Lung Chung
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-09 08:55
CPC Classifications
C; C10; C10L; C10L1/00; C10L1/10; C10L1/14; C10L1/22; C10L1/234; C10L1/236; C10L1/2364; C10L1/24; C10L1/2462; C10L1/2468; C10M; C10M143/00; C10M143/02; C10M149/00; C10M149/02; C10M149/06; C10M151/00; C10M151/02; C10M2205/00; C10M2205/02; C10M2205/022; C10M2215/00; C10M2215/02; C10M2215/04; C10M2215/042; C10M2215/24; C10M2215/26; C10M2217/00; C10M2217/02; C10M2217/024; C10M2217/04; C10M2217/046; C10M2217/06; C10M2221/00; C10M2221/02; C10M2221/04; C10M2221/043; C10N; C10N2070/00; C10N2070/02
Claims Analysis
Total Claims: 35
Claim 1
Independent Claim
196 words
Composition comprising reaction product of: (i) (a) copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least 10 weight percent of said copolymer chain and contains at least 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M w / M of less than 2 and a ratio of M z/ M of less than 1.8, and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprising at least 5 weight percent of said chain, differ in composition from one another by at least 7 weight percent ethylene, said copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; and (ii) at least one polyamine containing one primary amino group and at least one secondary amino group.
Claim 2
Dependent Claim
196 words
Composition comprising reaction product of: (i) (a) copolymer of ethylene and at least one other alpha-olefin monomer, said copolymer comprising intramolecularly heterogeneous copolymer chains containing at least one crystallizable segment of methylene units and at least one low crystallinity ethylene-alpha-olefin copolymer segment, wherein said at least one crystallizable segment comprises at least 10 weight percent of said copolymer chain and contains at least 57 weight percent ethylene, wherein said low crystallinity segment contains not greater than 53 weight percent ethylene, and wherein said copolymer has a molecular weight distribution characterized by at least one of a ratio of M w / M of less than 2 and a ratio of M z/ M of less than 1.8, and wherein at least two portions of an individual intramolecularly heterogeneous chain, each portion comprising at least 5 weight percent of said chain, differ in composition from one another by at least 7 weight percent ethylene, said copolymer grafted with (b) ethylenically monounsaturated carboxylic acid material having 1 to 2 carboxylic acid groups or anhydride group to form grafted ethylene copolymer; and (ii) at least one polyamine containing one primary amino group and at least one secondary amino group.
Claim 3
Dependent Claim
39 words
The composition according to claim 1 wherein said copolymer (i) (a) has an intermolecular compositional dispersity such that 95 weight % of said copolymer chains have a composition 15 weight % or less different from said average ethylene composition.
Claim 4
Dependent Claim
40 words
The composition according to claim 2 wherein said intermolecular compositional dispersity of said copolymer (i) (a) is such that 95 weight % of said copolymer chains have a composition 13 weight % or less different from said average ethylene composition.
Claim 5
Dependent Claim
40 words
The composition according to claim 3 wherein said intermolecular compositional dispersity of said copolymer (i) (a) is such that 95 weight % of said copolymer chains have a composition 10 wt. % or less different from said average ethylene composition.
Claim 6
Dependent Claim
27 words
The composition according to any of claims 1 to 4 wherein said low crystallinity segment of said copolymer (i)(a) comprises from 20 to 53 wt. % ethylene.
Claim 7
Dependent Claim
23 words
The composition according to claim 5 wherein said low crystallinity segment of said copolymer (i)(a) comprises from 30 to 50 weight % ethylene.
Claim 8
Dependent Claim
21 words
The composition according to any of claims 1 to 6 wherein said crystallizable segment comprises at least 57 wt. % ethylene.
Claim 9
Dependent Claim
27 words
The composition according to any of claims 1 to 7 wherein said copolymer (i)(a) has a total minimum ethylene content of 20 % on a weight basis.
Claim 10
Dependent Claim
26 words
The composition according to any of claims 1 to 8 wherein said copolymer (i)(a) is characterized by a weight-average molecular weight of from 20,000 to 250,000.
Claim 11
Dependent Claim
47 words
The composition according to any of claims 1 to 9 wherein said copolymer (i)(a) has a MWD characterized by at least one of a ratio of M w / M n of less than 1.5 and a ratio of M z/ M w of less than 1.5.
Claim 12
Dependent Claim
40 words
The composition according to claim 10 wherein said copolymer (i)(a) has a MWD characterized by at least one of a ratio of M w/ M of less than 1.25 and a ratio of M z/ M of less than 1.2.
Claim 13
Dependent Claim
81 words
The composition according to any of claims 1 to 11 wherein said copolymer's (i)(a) chain segment sequences are characterized by at least one of the structures: (I) M-T wherein x and y are each integers of 1 to 3, M comprises said crystallizable segment, T comprises said low crystallinity segment, M' and M 2 are the same or different and each comprises an M segment, and T' and T 2 are the same or different and each comprises a T segment.
Claim 14
Dependent Claim
22 words
The composition according to claim 12 wherein said copolymer's (i)(a) chain segment sequences are characterized by structure II and x is one.
Claim 15
Dependent Claim
28 words
The composition according to claim 12 or claim 13 wherein in said copolymer (i)(a) said T' and T 2 segments are of substantially the same weight-average molecular weight.
Claim 16
Dependent Claim
38 words
The composition according to claim 14 wherein in said copolymer (i)(a) the sum of the weight average molecular weights of said T and T 2 segments is substantially equal to the weight-average molecular weight of said M segment.
Claim 17
Dependent Claim
45 words
The composition according to any of claims 1 to 15 wherein said monounsaturated carboxylic acid material (i)(b) is selected from the group consisting of C 4 to C 10 monounsaturated dicarboxylic acid material, C 3 to C 10 monounsaturated monocarboxylic acid material, and mixtures thereof.
Claim 18
Dependent Claim
26 words
The composition according to claim 16 wherein said C4 to Ci o monounsaturated dicarboxylic acid material is selected from maleic anhydride, maleic acid, and mixtures thereof.
Claim 19
Dependent Claim
20 words
The composition according to claim 17 wherein said C 4 to C 10 monounsaturated dicarboxylic acid material is maleic anhydride.
Claim 20
Dependent Claim
31 words
The composition according to any of claims 1 to 18 wherein said polyamine contains 1 primary amino group, from to 6 secondary amino groups, and from 7 to 80 carbon atoms.
Claim 21
Dependent Claim
20 words
The composition according to any of claims 1 to 19 wherein said polyamine further contains a sulfur or oxygen atom.
Claim 22
Dependent Claim
71 words
The composition according to any of claims 1 to 20 wherein said polyamine is represented by the formula Wherein: R' is hydrocarbylene containing from 1 to about 6 carbons; R 2 is hydrocarbylene containing from 1 to about 6 carbons; R 3 is hydrocarbyl containing from 1 to about 40 carbons; A is oxygen or sulfur: y is zero or one; and z has a value of from 1 to 6.
Claim 23
Dependent Claim
18 words
The composition according to claim 21 wherein R' and R 2 are alkylene and R 3 is alkyl.
Claim 24
Dependent Claim
32 words
The composition according to claim 22 wherein R' and R 2 are independently alkylene containing from 2 to 4 carbon atoms and R 3 is alykl containing from 5 to 30 carbons.
Claim 25
Dependent Claim
27 words
The composition of matter according to claim 23 wherein R' and R 2 are propylene. and R 3 is alkyl containing from 10 to 20 carbon atoms.
Claim 26
Dependent Claim
47 words
The composition according to any of claims 1 to 24 wherein said copolymer (i)(a) is grafted with said ethylenically monounsaturated carboxylic acid material under grafting conditions effective to maintain the MWD of the grafted copolymer within 10 % or less of the MWD of said copolymer (i)(a).
Claim 27
Dependent Claim
20 words
The composition according to claim 25 wherein said grafting conditions comprise free radical solution grafting at temperatures below 225 C.
Claim 28
Dependent Claim
39 words
The composition according to any of claim 1 to 26 comprising reaction product of (i), (ii) and (iii) a C 50 to C 400 hydrocarbyl substituted carboxylic acid component containing 1 to 2 carboxylic acid groups or anhydride group.
Claim 29
Dependent Claim
34 words
The composition according to claim 27 wherein said C 50 to C 400 hydrocarbyl substituted carboxylic acid component (iii) comprises C 50 to C 400 hydrocarbyl substituted C4- to C dicarboxylic acid or anhydride.
Claim 30
Dependent Claim
42 words
The composition according to claim 28 wherein said C so to C 400 hydrocarbyl substituted dicarboxylic acid or anhydride is selected from Cso to C 400 hydrocarbyl substituted succinic acid, C 50 to C 400 hydrocarbyl substituted succinic anhydride, and mixtures thereof.
Claim 31
Dependent Claim
21 words
The composition according to claim 29 wherein said Cso to C 400 hydrocarbyl substituted succinic anhydride comprises polybutenyl substituted succinic anhydide.
Claim 32
Dependent Claim
18 words
An oleaginous composition comprising: (i) oleaginous material; and (ii) composition according to any of claims 1 to 30.
Claim 33
Dependent Claim
11 words
The composition according to claim 31 wherein (i) is lubricating oil.
Claim 34
Dependent Claim
16 words
The composition according to claim 32 containing a viscosity improving and dispersant effective amount of (ii).
Claim 35
Dependent Claim
15 words
The composition according to claim 33 containing from 0.001 to 20 wt % of (ii).
References Cited (Backward Citations)
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